Tension pay-off dynamics simulation method based on climate change, storage medium, equipment and computer program product

Abstract

The invention discloses a climate change-based tension pay-off dynamic simulation method, a storage medium, equipment and a computer program product, and the method comprises the steps: dividing a cable into micro-cylinder units in the ADAMS software simulation process of tension pay-off, adding a thermal expansion effect caused by temperature to each micro-cylinder unit, and carrying out the thermal expansion effect on each micro-cylinder unit; correcting physical parameters of the micro-cylinder units; all the micro-cylinder units are connected end to end, and a bushing shaft sleeve force caused by the corrected physical parameters is added between every two adjacent micro-cylinder units; a wind load and a rain and snow additional load are introduced on the basis of the added bushing shaft sleeve force, a cable model is constructed, traction force is increased at the two ends of the cable model, and analogue simulation of the stretching pay-off process is achieved. According to the invention, the stretching pay-off process in a real climate environment can be simulated, and the practicability and reliability of stretching pay-off dynamics simulation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tension-release dynamics simulation, and in particular to a tension-release dynamics simulation method based on climate change, a storage medium, a device and a computer program product. Background Art

[0002] The research on the dynamics of tensioning and releasing wires can understand the theoretical basis of cable breakage, wear, entanglement and other problems in the process of tensioning and releasing wires by studying the mechanical behavior and control strategy during the process of tensioning and releasing wires, and provide scientific basis and technical support for the engineering construction of transmission lines. At present, the existing research on the dynamics of tensioning and releasing wires mainly focuses on the line stringing construction engineering of tensioning and releasing wires, the selection and optimization of equipment for tensioning and releasing wires, and guides the selection of tensioning and releasing wires schemes by studying the dynamics process of tensioning and releasing wires.

[0003] Since the transmission lines are erected in the outdoor environment, the change of climate can easily affect the cable materials, thus affecting the strength and durability of the cables. At the same time, since the tensioning and releasing process is a dynamic process, the cable position and state will change over time. Due to climate change, the cable release speed and position stability will be affected, resulting in increased friction and wear of the cables during the tensioning and releasing process. However, there are few studies on the tensioning and releasing dynamics under climate change, which makes it difficult to reflect the real tensioning and releasing process, reducing the practicality and reliability of the tensioning and releasing dynamics research. Summary of the invention

[0004] In response to the problems existing in the prior art, the present invention provides a method, storage medium, device and computer program product for simulating the tensioning and paying-out dynamics based on climate change, which can simulate the tensioning and paying-out process under real climate environment and improve the practicality and reliability of the tensioning and paying-out dynamics simulation.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solution: a method for simulating the dynamics of tension and release based on climate change, which specifically includes the following steps:

[0006] Step S1, during the ADAMS software simulation process of tensioning and paying out the cable, the cable is divided into micro-cylindrical units, a thermal expansion effect caused by temperature is added to each micro-cylindrical unit, and the physical parameters of the micro-cylindrical unit are corrected;

[0007] Step S2, connecting all micro-cylindrical units end to end, and adding a bushing force caused by the modified physical parameters between two adjacent micro-cylindrical units;

[0008] Step S3: on the basis of the added bushing sleeve force, wind load and rain and snow additional load are introduced to construct a cable model, and traction force is added at both ends of the cable model to realize the simulation of the tensioning and paying-out process.

[0009] Furthermore, in step S1, the process of adding the thermal expansion effect caused by temperature to each micro-cylindrical unit and correcting the physical parameters of the micro-cylindrical unit is as follows: during the ADAMS software simulation of the stretching and pay-off, a temperature field is established according to the environment in which the stretching and pay-off is located, and the length of the micro-cylindrical unit is corrected according to the change of the thermal expansion coefficient of the micro-cylindrical unit caused by the change of the temperature field with the environment:

[0010] L=α·L0·ΔT+L0

[0011] Among them, L represents the length of the micro-cylindrical unit after correction, L0 represents the length of the micro-cylindrical unit before correction, α represents the thermal expansion coefficient of the micro-cylinder, and ΔT represents the change of the temperature field where the micro-cylinder is located.

[0012] Furthermore, in step S1, the process of adding the thermal expansion effect caused by temperature to each micro-cylindrical unit and correcting the physical parameters of the micro-cylindrical unit also includes: correcting the elastic modulus of the micro-cylindrical unit according to the change of the thermal expansion coefficient of the micro-cylindrical unit and the thermal stress caused by the change of the temperature field with the environment:

[0013]

[0014] Where E represents the elastic modulus of the modified micro-cylindrical element, δ thermal Represents the thermal stress caused by the change of temperature field with the environment.

[0015] Furthermore, step S2 includes the following sub-steps:

[0016] Step S2.1, calculate the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylindrical unit according to the length L, diameter d, elastic modulus E, shear modulus G and cross-sectional area A of the modified micro-cylindrical unit:

[0017]

[0018] Among them, K 11 represents the tensile stiffness coefficient of the micro-cylindrical element, K 22 , K 33 They represent the shear stiffness coefficient of the micro-cylindrical element, K 44 represents the torsional stiffness coefficient of the micro-cylindrical element, K 55 , K 66 They represent the bending stiffness coefficient of the micro-cylindrical element, and I represents the moment of inertia of the micro-cylindrical element;

[0019] Step S2.2, calculate the bushing force according to the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylinder unit and the preset force, moment and damping of the micro-cylinder:

[0020]

[0021] Among them, R x , R y , R z They represent the relative displacements between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x ,θ y ,θ z represents the relative angular displacement between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x 、v y 、v z They represent the relative speeds on the x-axis, y-axis, and z-axis between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in two adjacent micro-cylindrical units, respectively. x 、w y 、w z They represent the relative angular velocity between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x0 、F y0 、F z0 Respectively represent the forces preset on the x-axis, y-axis, and z-axis, T x0 、T y0 、T z0 Respectively represent the preset moments on the x-axis, y-axis, and z-axis, C 11 , C 22 , C 33 , C 44 , C 55 , C 66 Respectively represent the rope damping coefficients in the x-axis, y-axis, z-axis and the corresponding x-axis, y-axis, z-axis rotation directions.

[0022] Furthermore, step S3 introduces wind load and rain and snow additional load on the basis of the added bushing sleeve force. The specific process of constructing the cable model is as follows: according to the environment in which each bushing sleeve force is located, the corresponding wind load is added to the force in the x-axis direction, and the corresponding rain and snow additional load is added to the force in the z-axis direction.

[0023] Furthermore, the wind load F ω The calculation process is:

[0024] F ω =0.5·ρ·C d ·A x v(t) 2

[0025] Where ρ represents the air density of the environment where the bushing force is added, C d A represents the resistance coefficient of the micro-cylindrical unit shape change caused by the added bushing force. x It represents the frontal area of ​​the micro-cylindrical unit in the environment where the bushing sleeve force is added, and v(t) represents the wind speed in the environment where the bushing sleeve force is added.

[0026] Furthermore, the rain and snow additional load F s The calculation process is:

[0027] F s =ρ s ·t s ·π·d·g

[0028] Among them, ρ s Indicates the rain and snow density of the environment where the bushing force is added, t s It represents the snow thickness of the environment where the bushing sleeve force is added, d represents the diameter of the micro-cylindrical unit in the environment where the bushing sleeve force is added, and g represents the gravitational acceleration.

[0029] Furthermore, the present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program enables a computer to execute the tension-release dynamics simulation method based on climate change.

[0030] Furthermore, the present invention also provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for simulating the tension and release dynamics based on climate change is implemented.

[0031] Furthermore, the present invention also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the method for simulating the tension-release dynamics based on climate change is implemented.

[0032] Compared with the prior art, the present invention has the following beneficial effects: the present invention's method for simulating the dynamics of tensioning and releasing wires based on climate change corrects the physical parameters of the cable through the thermal expansion effect caused by temperature, avoids excessive extrusion or stretching of the cable during the tensioning and releasing process, causes damage to the internal structure of the cable, and affects the current carrying capacity and mechanical properties of the cable. By considering the thermal expansion effect of the cable, the tensioning and releasing process is adjusted to improve the safety of the cable tensioning and releasing process; at the same time, the present invention introduces wind loads and additional loads of rain and snow on the basis of the added bushing sleeve force to construct a cable model, so that the cable model can more accurately reflect the stress conditions in the actual working conditions, thereby guiding the tensioning and releasing process, and can effectively reduce construction errors, improve construction efficiency, and ensure the safety and stability of the tensioning and releasing process. The present invention's method for simulating the dynamics of tensioning and releasing wires based on climate change can simulate the tensioning and releasing process under a real climate environment, and improve the practicality and reliability of the dynamics simulation of tensioning and releasing wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a flow chart of the method for simulating the dynamics of tensioning and releasing wires based on climate change. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings.

[0035] like Figure 1 The flowchart of the stretching and releasing line dynamics simulation method based on climate change of the present invention is as follows:

[0036] Step S1, during the ADAMS software simulation process of the stretching and paying out, the cable is divided into micro-cylindrical units, and the thermal expansion effect caused by temperature is added to each micro-cylindrical unit, and the physical parameters of the micro-cylindrical unit are corrected to avoid excessive extrusion or stretching of the cable during the stretching and paying out process, which may cause damage to the internal structure of the cable and affect the current carrying capacity and mechanical properties of the cable. By considering the thermal expansion effect of the cable, the stretching and paying out process is adjusted to improve the safety of the cable stretching and paying out process and extend the service life of the cable; specifically, during the ADAMS software simulation process of the stretching and paying out, a temperature field is established according to the environment in which the stretching and paying out is located, and the length of the micro-cylindrical unit is corrected according to the change of the thermal expansion coefficient of the micro-cylindrical unit caused by the change of the temperature field with the environment: L=α·L0·ΔT+L0; the elastic modulus of the micro-cylindrical unit is corrected according to the change of the thermal expansion coefficient of the micro-cylindrical unit and the thermal stress caused by the change of the temperature field with the environment: Where L represents the length of the corrected micro-cylindrical unit, L0 represents the length of the micro-cylindrical unit before correction, α represents the thermal expansion coefficient of the micro-cylinder, ΔT represents the change in the temperature field where the micro-cylinder is located, E represents the elastic modulus of the corrected micro-cylindrical unit, δ thermal Represents the thermal stress caused by the change of temperature field with the environment.

[0037] Step S2, connecting all micro-cylindrical units end to end, and adding a bushing force caused by the modified physical parameters between two adjacent micro-cylindrical units, effectively reducing the friction and wear between the micro-cylindrical units; specifically includes the following sub-steps:

[0038] Step S2.1, calculate the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylindrical unit according to the length L, diameter d, elastic modulus E, shear modulus G and cross-sectional area A of the modified micro-cylindrical unit:

[0039]

[0040] Among them, K 11 represents the tensile stiffness coefficient of the micro-cylindrical element, K 22 , K 33 They represent the shear stiffness coefficient of the micro-cylindrical element, K 44 represents the torsional stiffness coefficient of the micro-cylindrical element, K 55 , K 66 They represent the bending stiffness coefficient of the micro-cylindrical element, and I represents the moment of inertia of the micro-cylindrical element;

[0041] Step S2.2, calculate the bushing force according to the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylinder unit and the preset force, moment and damping of the micro-cylinder:

[0042]

[0043] Among them, R x , R y , R z They represent the relative displacements between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x ,θ y ,θ z represents the relative angular displacement between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x 、v y 、vz They represent the relative speeds on the x-axis, y-axis, and z-axis between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in two adjacent micro-cylindrical units, respectively. x 、w y 、w z They represent the relative angular velocity between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x0 、F y0 、F z0 Respectively represent the forces preset on the x-axis, y-axis, and z-axis, T x0 、T y0 、T z0 Respectively represent the preset moments on the x-axis, y-axis, and z-axis, C 11 , C 22 , C 33 , C 44 , C 55 , C 66 Respectively represent the rope damping coefficients in the x-axis, y-axis, z-axis and the corresponding x-axis, y-axis, z-axis rotation directions.

[0044] Step S3, on the basis of the added bushing sleeve force, wind load and rain and snow additional load are introduced to construct a cable model. Specifically, each bushing sleeve force is added with corresponding wind load on the force in the x-axis direction and corresponding rain and snow additional load on the force in the z-axis direction according to the environment in which it is located, so that the cable model can more accurately reflect the stress conditions in the actual working conditions, thereby guiding the tensioning and releasing process, effectively reducing construction errors, improving construction efficiency and ensuring the safety and stability of the tensioning and releasing process. At the same time, by introducing wind load and rain and snow additional load, the cable model can evaluate the stress conditions of the cable under extreme weather conditions, which is helpful to discover potential safety hazards in advance and take corresponding preventive measures, thereby reducing the possibility of disasters. And add traction force at both ends of the cable model to achieve simulation of the tensioning and releasing process.

[0045] The wind load F in the present invention ω The calculation process is:

[0046] F ω =0.5·ρ·C d ·A x v(t) 2

[0047] Where ρ represents the air density of the environment where the bushing force is added, C dA represents the resistance coefficient of the micro-cylindrical unit shape change caused by the added bushing force. x It represents the frontal area of ​​the micro-cylindrical unit in the environment where the bushing sleeve force is added, and v(t) represents the wind speed in the environment where the bushing sleeve force is added.

[0048] The additional rain and snow load F in the present invention s The calculation process is:

[0049] F s =ρ s ·t s ·π·d·g

[0050] Among them, ρ s Indicates the rain and snow density of the environment where the bushing force is added, t s It represents the snow thickness of the environment where the bushing sleeve force is added, d represents the diameter of the micro-cylindrical unit in the environment where the bushing sleeve force is added, and g represents the gravitational acceleration.

[0051] The method for simulating the tensioning and releasing dynamics of the present invention based on climate change can simulate the tensioning and releasing process under a real climate environment, thereby improving the practicability and reliability of the tensioning and releasing dynamics simulation.

[0052] In a technical solution of the present invention, a computer-readable storage medium is also provided, storing a computer program, wherein the computer program enables a computer to execute the tension-release dynamics simulation method based on climate change.

[0053] In a technical solution of the present invention, an electronic device is also provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the tension-release dynamics simulation method based on climate change is implemented.

[0054] In a technical solution of the present invention, a computer program product is also provided, including a computer program, and when the computer program is executed by a processor, the method for simulating the tension-release dynamics based on climate change is implemented.

[0055] In the embodiments disclosed in the present application, the computer storage medium can be a tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, device or equipment. The computer storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the above. More specific examples of computer storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0056] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0057] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A method for simulating the dynamics of tensioning and releasing wires based on climate change, characterized in that: The specific steps include: Step S1, during the ADAMS software simulation process of tensioning and paying out the cable, the cable is divided into micro-cylindrical units, a thermal expansion effect caused by temperature is added to each micro-cylindrical unit, and the physical parameters of the micro-cylindrical unit are corrected; Step S2, connecting all micro-cylindrical units end to end, and adding a bushing force caused by the modified physical parameters between two adjacent micro-cylindrical units; Step S3: on the basis of the added bushing sleeve force, wind load and rain and snow additional load are introduced to construct a cable model, and traction force is added at both ends of the cable model to realize the simulation of the tensioning and paying-out process.

2. The method for simulating the dynamics of tension and release based on climate change according to claim 1, characterized in that: In step S1, the process of adding the thermal expansion effect caused by temperature to each micro-cylindrical unit and correcting the physical parameters of the micro-cylindrical unit is as follows: during the ADAMS software simulation of the stretching and pay-off, a temperature field is established according to the environment in which the stretching and pay-off is located, and the length of the micro-cylindrical unit is corrected according to the change of the thermal expansion coefficient of the micro-cylindrical unit caused by the change of the temperature field with the environment: L=α·L0·ΔT+L0 Among them, L represents the length of the micro-cylindrical unit after correction, L0 represents the length of the micro-cylindrical unit before correction, α represents the thermal expansion coefficient of the micro-cylinder, and ΔT represents the change of the temperature field where the micro-cylinder is located.

3. The method for simulating the dynamics of tension and release based on climate change according to claim 2, characterized in that: In step S1, the process of adding the thermal expansion effect caused by temperature to each micro-cylindrical unit and correcting the physical parameters of the micro-cylindrical unit also includes: correcting the elastic modulus of the micro-cylindrical unit according to the change of the thermal expansion coefficient of the micro-cylindrical unit and the thermal stress caused by the change of the temperature field with the environment: Where E represents the elastic modulus of the modified micro-cylindrical element, δ thermal Represents the thermal stress caused by the change of temperature field with the environment.

4. The method for simulating the dynamics of tension and release based on climate change according to claim 3, characterized in that: Step S2 includes the following sub-steps: Step S2.1, calculate the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylindrical unit according to the length L, diameter d, elastic modulus E, shear modulus G and cross-sectional area A of the modified micro-cylindrical unit: Among them, K 11 represents the tensile stiffness coefficient of the micro-cylindrical element, K 22 , K 33 They represent the shear stiffness coefficient of the micro-cylindrical element, K 44 represents the torsional stiffness coefficient of the micro-cylindrical element, K 55 , K 66 They represent the bending stiffness coefficient of the micro-cylindrical element, and I represents the moment of inertia of the micro-cylindrical element; Step S2.2, calculate the bushing force according to the tensile stiffness coefficient, shear stiffness coefficient, torsional stiffness coefficient and bending stiffness coefficient of the micro-cylinder unit and the preset force, moment and damping of the micro-cylinder: Among them, R x , R y , R z They represent the relative displacements between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x ,θ y ,θ z represents the relative angular displacement between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x 、v y 、v z They represent the relative speeds on the x-axis, y-axis, and z-axis between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in two adjacent micro-cylindrical units, respectively. x 、w y 、w z They represent the relative angular velocity between the I-Marker coordinate system of the first micro-cylindrical unit and the J-Marker coordinate system of the second micro-cylindrical unit in the x-axis, y-axis, and z-axis, respectively. x0 、F y0 、F z0 Respectively represent the forces preset on the x-axis, y-axis, and z-axis, T x0 , T y0 , T z0 Respectively represent the preset moments on the x-axis, y-axis, and z-axis, C 11 , C 22 , C 33 , C 44 , C 55 , C 66 Respectively represent the rope damping coefficients in the x-axis, y-axis, z-axis and the corresponding x-axis, y-axis, z-axis rotation directions.

5. The method for simulating the dynamics of tension and release based on climate change according to claim 4, characterized in that: Step S3 introduces wind load and rain and snow additional load on the basis of the added bushing sleeve force. The specific process of constructing the cable model is as follows: according to the environment in which each bushing sleeve force is located, the corresponding wind load is added to the force in the x-axis direction, and the corresponding rain and snow additional load is added to the force in the z-axis direction.

6. The method for simulating the dynamics of tension and release based on climate change according to claim 5, characterized in that: The wind load F ω The calculation process is: F ω =0.5·ρ·C d ·A x ·v(t) 2 Where ρ represents the air density of the environment where the bushing force is added, C d A represents the resistance coefficient of the micro-cylindrical unit shape change caused by the added bushing force. x It represents the frontal area of ​​the micro-cylindrical unit in the environment where the bushing sleeve force is added, and v(t) represents the wind speed in the environment where the bushing sleeve force is added.

7. The method for simulating the dynamics of tension and release based on climate change according to claim 5, characterized in that: The additional rain and snow load F s The calculation process is: F s =ρ s ·t s ·p·d·g Among them, ρ s Indicates the rain and snow density of the environment where the bushing force is added, t s It represents the snow thickness of the environment where the bushing sleeve force is added, d represents the diameter of the micro-cylindrical unit in the environment where the bushing sleeve force is added, and g represents the gravitational acceleration.

8. A computer-readable storage medium storing a computer program, characterized in that: The computer program enables the computer to execute the tension-release dynamics simulation method based on climate change as described in any one of claims 1 to 7.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for simulating the tension-release dynamics based on climate change as described in any one of claims 1 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for simulating the tension-release dynamics based on climate change described in any one of claims 1 to 7 is implemented.

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