Continuous fiber composite material single connection clamp structure design method and system

Abstract

The application relates to the field of aero-engine pipeline fixing structure design, and discloses a continuous fiber composite single-union clamp structure design method and system. A single-union clamp simulation model is constructed to accurately obtain the inner radius of a deformation zone of a single-union clamp after the single-union clamp is closed after being sleeved on a guide pipe. A first analysis model of the single-union clamp bending moment is constructed based on the deformation zone thickness, the skeleton forming radius and the inner radius of the deformation zone in the deformation process. The single-union clamp under different combination conditions is analyzed, and the bending moment of the single-union clamp after being closed under the corresponding combination condition can be obtained. By screening the deformation zone thickness and the skeleton forming radius combination value meeting the given bending moment value range, scientific and reasonable single-union clamp structure design parameters can be determined, the iteration number of the continuous fiber composite single-union clamp structure design can be reduced, the design cycle can be shortened, the design quality and performance of the single-union clamp can be ensured, and the design efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of aero-engine pipeline fixing structure design, and discloses a design method and system for a continuous fiber composite single-link clamp structure. Background Technology

[0002] Continuous fiber composite single-joint clamps are characterized by their light weight, high specific strength, good fatigue resistance, and excellent weight reduction effect. They can be used to fix external piping systems and cables of aero engines, effectively reducing the overall weight of the engine. Continuous fiber composite single-joint clamps mainly consist of a skeleton and a rubber pad. To maximize weight reduction while considering overall structural strength and rigidity, the skeleton adopts an integrated molding structure. To facilitate skeleton manufacturing, a certain opening angle needs to be pre-set for the single-joint clamp. If the opening angle is too small, it will be difficult to open, leading to installation difficulties. If it is opened forcefully, it may cause delamination damage in the thin areas of the clamp. If the opening angle is too large, it will make assembly difficult during the clamping process. Conversely, if the opening angle is inappropriate, the clamp may not close properly after clamping the pipeline, or the clamping force on the pipeline may be insufficient. Therefore, determining the clamp opening angle is crucial for the installation and use of the clamp.

[0003] To determine the appropriate opening angle, the current approach primarily involves empirical design followed by trial manufacturing and final assembly. If the opening angle is unsuitable, multiple iterations of the entire development process are necessary to ultimately determine a suitable clamp structure. Due to the wide variety of clamp specifications, following the above design method would significantly increase the development cost and timeline, failing to meet the requirements of modern aero-engine development. To reduce design iterations, shorten the design cycle, and improve design efficiency and quality, a design method for a single-link clamp structure using continuous fiber composite materials is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a design method and system for a single-link clamp structure of continuous fiber composite material, which can reduce the number of design iterations for the single-link clamp structure of continuous fiber composite material, shorten the design cycle, ensure the design quality and performance of the single-link clamp, and improve design efficiency.

[0005] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows:

[0006] A design method for a single-link clamp structure made of continuous fiber composite material, wherein the single-link clamp includes an arc-shaped skeleton, and a rubber pad is disposed on the inner side of the arc-shaped skeleton; comprising: Based on the design structure of the single-link clamp, the skeleton of the single-link clamp is divided into a deformation zone, a transition zone, and a thickening zone, and a simulation model of the single-link clamp structure is constructed. The deformation zone is an arc structure, and thickening zones are provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickening zones can be pressed tightly together by the connecting bolts. Each thickening zone is smoothly connected to the end of the corresponding arc structure through a transition zone. The rubber pad is set on the inner side of the deformation zone. Using combinations of different deformation zone thicknesses and skeleton forming radii as inputs, and the skeleton width, the size of the conduit connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad, and the performance parameters of the rubber pad as constraints, the inner radius of the deformation zone after the single clamp is closed when it is connected to the conduit is simulated. Based on the stress of the micro-circular segment in the deformation zone during the opening and closing process, a first analysis model of the bending moment of a single clamp is constructed based on the thickness of the deformation zone, the forming radius of the skeleton, and the inner radius of the deformation zone during the deformation process. Based on the deformation zone thickness and skeleton forming radius under each combination condition, and the inner radius of the deformation zone obtained by simulation under the corresponding combination condition, the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination condition is obtained by using the first analysis model. The combination value of deformation zone thickness and skeleton forming radius that satisfies the given bending moment value range is used as the design parameter of the single clamp structure.

[0007] Furthermore, the first analytical model is ,in This represents the torque value applied during the bending process along the axis of the deformation zone. The radius of the neutral layer in the deformation zone during bending along the axis is given. The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton.

[0008] Furthermore, the connecting bolts press the contact surfaces of the two thickened areas together, thus tightening the radius of the neutral layer in the deformed zone. ,Will Substituting into the first analytical model, the bending moment after the single clamp is closed when it is fitted onto the conduit is obtained. .

[0009] Furthermore, when the single clamp is fitted onto the conduit, the radius of the deformation zone after the single clamp is closed is based on... Analysis yielded, among which The radius of the deformation zone after the single clamp is closed when it is fitted onto the conduit. ,E 0 represents the elastic modulus of the rubber pad. R Where is the radius of the catheter. The width of the skeleton. α The central angle between the two ends of the rubber pad after the single clamp is fitted onto the conduit is... μ The coefficient of friction between the rubber and the conduit. π Pi h 0 represents the original thickness of the rubber pad. F 0 represents the pressure exerted on the thickened area after the connecting bolts are tightened. , T To tighten the connecting bolts to the required torque, K This is the tightening torque coefficient. K The value range is 0.1 to 0.2. d The nominal diameter of the connecting bolt. L 1 represents the vertical distance from the center of the conduit to the edge of the thickened area when a single clamp is fitted onto the conduit. , The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the skeleton deformation zone, b This is the pressure distribution coefficient. b The value range is 0.7 to 0.99.

[0010] To achieve the above-mentioned technical effects, the present invention also provides a continuous fiber composite material single-link clamp structure design system for implementing the aforementioned single-link clamp structure design method, comprising: The simulation model construction module is used to divide the skeleton of the single-link clamp into a deformation zone, a transition zone, and a thickened zone according to the design structure of the single-link clamp, and to construct a simulation model of the single-link clamp structure. The deformation zone is an arc structure, and thickened zones are provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickened zones can be pressed tightly together by the connecting bolts. Each thickened zone is smoothly connected to the end of the corresponding arc structure through a transition zone. The rubber pad is set on the inner side of the deformation zone. The simulation analysis module is used to simulate and obtain the radius of the deformation zone after the single clamp is closed when the single clamp is fitted onto the guide tube, taking the combination of different deformation zone thicknesses and skeleton forming radius as inputs, and the skeleton width, the size of the guide tube connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad, and the performance parameters of the rubber pad as constraints. The analysis model construction module is used to construct the first analysis model of the bending moment of a single clamp based on the deformation zone thickness, the skeleton forming radius, and the inner radius of the deformation zone during the deformation process, according to the stress of the micro-circular segment in the deformation zone during the opening and closing process. The design parameter analysis module is used to analyze the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination conditions based on the deformation zone thickness, skeleton forming radius and the inner radius of the deformation zone obtained by simulation under the corresponding combination conditions. The combined value of deformation zone thickness and skeleton forming radius that meets the given bending moment value range is used as the design parameter of the single clamp structure.

[0011] Furthermore, in the analysis model construction module, the first analysis model is... ,in This represents the torque value applied during the bending process along the axis of the deformation zone. The radius of the neutral layer in the deformation zone during bending along the axis is given. The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton.

[0012] Furthermore, in the design parameter analysis module, the radius of the neutral layer in the deformation zone after the connecting bolts press the contact surfaces of the two thickened areas together is... ,Will Substituting into the first analytical model, the bending moment after the single clamp is closed when it is fitted onto the conduit is obtained. .

[0013] Furthermore, in the simulation analysis module, when the single clamp is fitted onto the conduit, the radius of the deformation zone after the single clamp closes is based on... Analysis yielded, among which The radius of the deformation zone after the single clamp is closed when it is fitted onto the conduit. , E 0 represents the elastic modulus of the rubber pad. R Where is the radius of the catheter. The width of the skeleton. α The central angle between the two ends of the rubber pad after the single clamp is fitted onto the conduit is... μ The coefficient of friction between the rubber and the conduit. π Pi h 0 represents the original thickness of the rubber pad. F 0 represents the pressure exerted on the thickened area after the connecting bolts are tightened. , T To tighten the connecting bolts to the required torque, K This is the tightening torque coefficient. K The value range is 0.1 to 0.2. d The nominal diameter of the connecting bolt. L1 represents the vertical distance from the center of the conduit to the edge of the thickened area when a single clamp is fitted onto the conduit. , The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the skeleton deformation zone, b This is the pressure distribution coefficient. b The value range is 0.7 to 0.99.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention can obtain the combination values ​​of deformation zone thickness and skeleton forming radius that meet the given bending moment range, scientifically and rationally provide design parameters for single-link clamp structure, and can reduce the number of design iterations for continuous fiber composite single-link clamp structure, shorten the design cycle, and improve design efficiency while ensuring the design quality and performance of single-link clamp. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the free state of the continuous fiber composite single-link clamp structure in Example 1 or 2; Figure 2 This is a schematic diagram of the structure after the single clamp is closed when it is fitted onto the conduit in Example 1 or 2. Among them, 1. Deformation zone; 2. Thickened zone; 3. Transition zone; 4. Rubber pad. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0017] Example 1 See Figures 1 to 2 A design method for a single-link clamp structure made of continuous fiber composite material, wherein the single-link clamp includes an arc-shaped skeleton, and a rubber pad 4 is provided on the inner side of the arc-shaped skeleton; comprising: Based on the design structure of the single-link clamp, the skeleton of the single-link clamp is divided into a deformation zone 1, a transition zone 3, and a thickened zone 2, and a simulation model of the single-link clamp structure is constructed. The deformation zone 1 is an arc structure, and thickened zones 2 are respectively provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickened zones 2 are pressed together by the connecting bolts. Each thickened zone 2 is smoothly connected to the end of the corresponding arc structure through the transition zone 3. The rubber pad 4 is set on the inner side of the deformation zone 1. Using combinations of different deformation zone 1 thicknesses and skeleton forming radii as inputs, and the skeleton width, the size of the conduit connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad 4, and the performance parameters of the rubber pad 4 as constraints, the inner radius of the deformation zone 1 after the single clamp is closed when it is connected to the conduit is simulated. Based on the stress on the micro-circular segment of deformation zone 1 during the opening and closing process, a first analytical model for the bending moment of a single clamp is constructed based on the thickness of deformation zone 1, the forming radius of the skeleton, and the inner radius of deformation zone 1 during the deformation process. Based on the thickness of deformation zone 1, the forming radius of the skeleton, and the inner radius of deformation zone 1 obtained by simulation under each combination condition, the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination condition is obtained by using the first analysis model. The combined value of the thickness of deformation zone 1 and the forming radius of the skeleton that satisfies the given bending moment range is used as the design parameter of the single clamp structure.

[0018] In this embodiment, a simulation model of a single-link clamp is constructed, using combinations of different deformation zone 1 thicknesses and skeleton forming radii as input parameters. Constraints such as skeleton width, conduit size, connecting bolt tightening force, rubber pad 4 size, and performance parameters are comprehensively considered to accurately obtain the inner radius of the deformation zone 1 after the single-link clamp is closed when fitted onto the conduit. A first analytical model of the bending moment of the single-link clamp based on the deformation zone 1 thickness, skeleton forming radius, and the inner radius of the deformation zone 1 during deformation is constructed to analyze the single-link clamp under different combinations, yielding the bending moment after closure under the corresponding combinations. By selecting combinations of deformation zone 1 thickness and skeleton forming radius that satisfy a given bending moment range, scientifically reasonable design parameters for the single-link clamp structure can be determined. This reduces the number of design iterations for continuous fiber composite single-link clamp structures, shortens the design cycle, ensures the design quality and performance of the single-link clamp, and improves design efficiency.

[0019] Based on the same inventive concept, this embodiment also provides a continuous fiber composite single-link clamp structure design system for implementing the aforementioned single-link clamp structure design method, including: The simulation model construction module is used to divide the skeleton of the single-link clamp into a deformation zone 1, a transition zone 3, and a thickened zone 2 according to the design structure of the single-link clamp, and to construct a simulation model of the single-link clamp structure. The deformation zone 1 is an arc structure, and thickened zones 2 are respectively provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickened zones 2 are pressed tightly together by the connecting bolts. Each thickened zone 2 is smoothly connected to the end of the corresponding arc structure through the transition zone 3. The rubber pad 4 is set on the inner side of the deformation zone 1. The simulation analysis module is used to simulate and obtain the inner radius of the deformation zone 1 after the single clamp is closed when the single clamp is sleeved on the conduit, taking the combination of different deformation zone 1 thicknesses and skeleton forming radius as inputs, and the skeleton width, the size of the conduit connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad 4, and the performance parameters of the rubber pad 4 as constraints. The analysis model construction module is used to construct the first analysis model of the bending moment of the single clamp based on the thickness of the deformation zone 1, the forming radius of the skeleton, and the inner radius of the deformation zone 1 during the opening and closing process, according to the stress of the micro-circular segment of the deformation zone 1. The design parameter analysis module is used to analyze the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination conditions based on the thickness of deformation zone 1, the forming radius of skeleton, and the inner radius of deformation zone 1 obtained by simulation under the corresponding combination conditions. The combined value of deformation zone 1 thickness and skeleton forming radius that meets the given bending moment value range is used as the design parameter of single clamp structure.

[0020] Example 2 A design method for a single-link clamp structure of continuous fiber composite material, the method comprising the following specific steps: (1) Determine the material system of the subordinate parts of the composite (continuous fiber composite material) single clamp. The composite single-link clamp consists of a frame, rubber pad 4, and adhesive. Based on the application scenarios and maximum operating temperatures of the composite single-link clamp in aero-engines, the clamp frame is made of carbon fiber reinforced bismaleimide resin-based composite material, the rubber pad 4 is made of heat-resistant silicone rubber, and the adhesive is a high-temperature resistant silicone sealant.

[0021] (2) Determine the structural zoning of the composite single-link clamp frame. Based on the structural characteristics of the composite single-link clamp frame, this embodiment divides the frame into three parts: deformation zone 1, transition zone 3, and thickened zone 2. Wherein: The deformation zone 1 is relatively thin and can be bent along the clamp axis, with the deformable range covering about 3 / 4 of the entire circumference; The thickened area 2 has a large thickness and high rigidity, and cannot be deformed; it is used to provide mounting holes for connecting bolts so that the two thickened areas 2 can be pressed tightly together by the connecting bolts. The transition zone 3 connects the thickened zone 2 and the deformation zone 1. The transition zone 3 has a large thickness and high rigidity, and cannot be deformed.

[0022] (3) Construct a simulation model of the single-link clamp structure. In this embodiment, the single-link clamp includes an arc-shaped frame, and a rubber pad 4 is provided on the inner side of the arc-shaped frame. The rubber pad 4 is located on the inner side of the deformation zone 1.

[0023] (4) Using the combination of different deformation zone 1 thickness and skeleton forming radius as input, the skeleton width, the size of the conduit connected by the single clamp, the tightening force of the connecting bolt, the size of the rubber pad 4 and the performance parameters of the rubber pad 4 are used as constraints to simulate and obtain the inner radius of the deformation zone 1 after the single clamp is closed when it is connected to the conduit. There are many methods for simulating and obtaining the inner radius of the deformation zone 1 after the single clamp is closed. For example, numerical simulation can be performed using analysis software, and the inner radius data of the deformation zone 1 in the closed state can be extracted by calculating the model under different parameter combinations. In this embodiment, the inner radius of the deformation zone 1 after the single clamp is closed when it is fitted onto the conduit is based on... Analysis yielded, among which The radius of the deformation zone 1 after the single clamp is closed when it is fitted onto the conduit. , E 0 represents the elastic modulus of the rubber pad. R Where is the radius of the catheter. The width of the skeleton. α The central angle between the two ends of the rubber pad 4 after the single clamp is fitted onto the conduit is... μ The coefficient of friction between the rubber and the conduit. π Pi h 0 represents the original thickness of the rubber pad (4). F 0 represents the pressure exerted on the thickened area 2 after the connecting bolts are tightened. , T To tighten the connecting bolts to the required torque, K This is the tightening torque coefficient. K The value range is 0.1 to 0.2. d The nominal diameter of the connecting bolt. L 1 represents the vertical distance from the center of the conduit to the edge of the thickened area 2 when a single clamp is fitted onto the conduit. , The width of the skeleton. The elastic modulus of the material in the deformation zone 1 of the skeleton is given. The radius of the skeleton forming radius, The thickness of the deformation zone 1 of the skeleton is [missing information]. b This is the pressure distribution coefficient. b The value range is 0.7 to 0.99.

[0024] (5) Establish the micro-circular segment analysis model of deformation zone 1 to obtain the first analysis model between the thickness of deformation zone 1, the forming radius of the skeleton and the bending moment; Taking the micro-circular segment of deformation zone 1 as the research object, a stress analysis was conducted on it, and the relationship between the bending moment and the thickness of deformation zone 1 and the forming radius of the skeleton was established. The first analytical model is as follows. ,in The torque value applied during the bending process of deformation zone 1 along the axis. The radius of the neutral layer in deformation zone 1 during the bending process along the axis of deformation zone 1 is given. The width of the skeleton. The elastic modulus of the material in the deformation zone 1 of the skeleton is given. The radius of the skeleton forming radius, The thickness of the skeleton deformation zone 1.

[0025] Based on the actual use of composite single-link clamps, in order to facilitate the assembly of composite single-link clamps and the in-situ replacement of metal clamps, the thickness of deformation zone 1 should be as thin as possible while meeting strength requirements. The thickness H of deformation zone 1 is determined to be 0.75mm (the thickness of the bismaleimide resin-based composite prepreg is 0.125mm, with 6 layers laid), the skeleton width L is 12.5mm, the deformation elastic modulus E is 120GPa, and the preliminary skeleton forming radius R0′ is determined to be 11.2mm.

[0026] In addition, the radius of the neutral layer of the deformation zone 1 after the connecting bolts press the contact surfaces of the two thickened zones 2 tightly together ,Will Substituting into the first analytical model, the bending moment after the single clamp is closed when it is fitted onto the conduit is obtained. .

[0027] In this embodiment, the initial tightening force F0 of the connecting bolts is set to 3570N; the pressure distribution coefficient... a The value is 0.985; the central angle between the two ends of the rubber pad 4 after the single clamp is fitted onto the conduit. α It is 0.35 rad; the distance from the point of application of the concentrated force of the connecting bolt to the leftmost end of the clamp. L 0 is 28.32 mm; catheter radius R is 8mm; rubber pad 4 elastic modulus E The pressure is 2.97 GPa; the coefficient of friction μ is 0.7. Substituting these parameters into the above formula, we obtain that the inner radius R0 of the clamp after it is closed is 9.9 mm.

[0028] (6) Based on the thickness of deformation zone 1 and the forming radius of skeleton under each combination condition, and the inner radius of deformation zone 1 obtained by simulation under the corresponding combination condition, the bending moment after the single clamp is closed when the single clamp is sleeved on the guide tube under the corresponding combination condition is obtained by analysis using the first analysis model. The combination value of the thickness of deformation zone 1 and the forming radius of skeleton that meets the given bending moment value range is used as the design parameter of the single clamp structure.

[0029] (7) Determine the composite single-link clamp layup scheme Based on the theoretical analysis of the three key dimensions, the overall structural dimensions of the clamp can be preliminarily designed. According to the structural dimensions of the clamp, the layup scheme of deformation zone 1 and thickening zone 2 is determined. Deformation zone 1 mainly adopts 0° (along the ring direction of the clamp) and a small number of 90° or 45° layup schemes. The layup method of deformation zone 1 of the composite single clamp is [0° / 90° / 0° / 0°90° / 0°]. After thickening, an isotropic layup scheme is adopted.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A design method for a single-link clamp structure made of continuous fiber composite material, wherein the single-link clamp includes an arc-shaped skeleton, and a rubber pad is provided on the inner side of the arc-shaped skeleton; characterized in that, include: Based on the design structure of the single-link clamp, the skeleton of the single-link clamp is divided into a deformation zone, a transition zone, and a thickening zone, and a simulation model of the single-link clamp structure is constructed. The deformation zone is an arc structure, and thickening zones are provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickening zones can be pressed tightly together by the connecting bolts. Each thickening zone is smoothly connected to the end of the corresponding arc structure through a transition zone. The rubber pad is set on the inner side of the deformation zone. Using combinations of different deformation zone thicknesses and skeleton forming radii as inputs, and the skeleton width, the size of the conduit connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad, and the performance parameters of the rubber pad as constraints, the inner radius of the deformation zone after the single clamp is closed when it is connected to the conduit is simulated. Based on the stress of the micro-circular segment in the deformation zone during the opening and closing process, a first analysis model of the bending moment of a single clamp is constructed based on the thickness of the deformation zone, the forming radius of the skeleton, and the inner radius of the deformation zone during the deformation process. Based on the deformation zone thickness and skeleton forming radius under each combination condition, and the inner radius of the deformation zone obtained by simulation under the corresponding combination condition, the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination condition is obtained by using the first analysis model. The combination value of deformation zone thickness and skeleton forming radius that satisfies the given bending moment value range is used as the design parameter of the single clamp structure.

2. The single-link clamp structure design method according to claim 1, characterized in that, The first analysis model is ,in This represents the torque value applied during the bending process along the axis of the deformation zone. The radius of the neutral layer in the deformation zone during the bending process along the axis of the deformation zone. The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton.

3. The single-link clamp structure design method according to claim 2, characterized in that, The radius of the neutral layer in the deformation zone after the connecting bolts press the contact surfaces of the two thickened areas together. ,Will Substituting into the first analytical model, the bending moment after the single clamp is closed when it is fitted onto the conduit is obtained. .

4. The single-link clamp structure design method according to claim 1, characterized in that, When the single clamp is fitted onto the conduit, the radius of the deformation zone after the single clamp is closed is based on... Analysis yielded, among which The radius of the deformation zone after the single clamp is closed when it is fitted onto the conduit. , E 0 represents the elastic modulus of the rubber pad. R Where is the radius of the catheter. The width of the skeleton. α The central angle between the two ends of the rubber pad after the single clamp is fitted onto the conduit is... μ The coefficient of friction between the rubber and the conduit. π Pi h 0 represents the original thickness of the rubber pad. F 0 represents the pressure exerted on the thickened area after the connecting bolts are tightened. , T To tighten the connecting bolts to the required torque, K This is the tightening torque coefficient. K The value range is 0.1 to 0.

2. d The nominal diameter of the connecting bolt. L 1 represents the vertical distance from the center of the conduit to the edge of the thickened area when a single clamp is fitted onto the conduit. , The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton. b This is the pressure distribution coefficient. b The value range is 0.7 to 0.

99.

5. A design system for a continuous fiber composite single-link clamp structure, used to implement the single-link clamp structure design method according to any one of claims 1-4, characterized in that, include: The simulation model construction module is used to divide the skeleton of the single-link clamp into a deformation zone, a transition zone, and a thickened zone according to the design structure of the single-link clamp, and to construct a simulation model of the single-link clamp structure. The deformation zone is an arc structure, and thickened zones are provided at both ends of the arc structure to provide mounting holes for connecting bolts, so that the two thickened zones can be pressed tightly together by the connecting bolts. Each thickened zone is smoothly connected to the end of the corresponding arc structure through a transition zone. The rubber pad is set on the inner side of the deformation zone. The simulation analysis module is used to simulate and obtain the radius of the deformation zone after the single clamp is closed when the single clamp is fitted onto the guide tube, taking the combination of different deformation zone thicknesses and skeleton forming radius as inputs, and the skeleton width, the size of the guide tube connected by the single clamp, the tightening force of the connecting bolts, the size of the rubber pad, and the performance parameters of the rubber pad as constraints. The analysis model construction module is used to construct the first analysis model of the bending moment of a single clamp based on the deformation zone thickness, the skeleton forming radius, and the inner radius of the deformation zone during the deformation process, according to the stress of the micro-circular segment in the deformation zone during the opening and closing process. The design parameter analysis module is used to analyze the bending moment after the single clamp is closed when it is sleeved on the guide tube under the corresponding combination conditions based on the deformation zone thickness, skeleton forming radius and the inner radius of the deformation zone obtained by simulation under the corresponding combination conditions. The combined value of deformation zone thickness and skeleton forming radius that meets the given bending moment value range is used as the design parameter of the single clamp structure.

6. The single-link clamp structure design system according to claim 5, characterized in that, In the analysis model construction module, the first analysis model is ,in This represents the torque value applied during the bending process along the axis of the deformation zone. The radius of the neutral layer in the deformation zone during the bending process along the axis of the deformation zone. The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton.

7. The single-link clamp structure design system according to claim 6, characterized in that, In the design parameter analysis module, the radius of the neutral layer in the deformation zone after the connecting bolts press the contact surfaces of the two thickened areas together is... ,Will Substituting into the first analytical model, the bending moment after the single clamp is closed when it is fitted onto the conduit is obtained. .

8. The single-link clamp structure design system according to claim 5, characterized in that, In the simulation analysis module, when the single clamp is fitted onto the conduit, the radius of the deformation zone after the single clamp is closed is based on... Analysis yielded, among which The radius of the deformation zone after the single clamp is closed when it is fitted onto the conduit. , E 0 represents the elastic modulus of the rubber pad. R Where is the radius of the catheter. The width of the skeleton. α The central angle between the two ends of the rubber pad after the single clamp is fitted onto the conduit is... μ The coefficient of friction between the rubber and the conduit. π Pi h 0 represents the original thickness of the rubber pad. F 0 represents the pressure exerted on the thickened area after the connecting bolts are tightened. , T To tighten the connecting bolts to the required torque, K This is the tightening torque coefficient. K The value range is 0.1 to 0.

2. d The nominal diameter of the connecting bolt. L 1 represents the vertical distance from the center of the conduit to the edge of the thickened area when a single clamp is fitted onto the conduit. , The width of the skeleton. The elastic modulus of the material in the deformation zone of the skeleton. The radius of the skeleton forming radius, The thickness of the deformation zone of the skeleton. b This is the pressure distribution coefficient. b The value range is 0.7 to 0.99.

Images