Mooring system simulation test method
By establishing a three-dimensional model to conduct simulation tests on the anchoring motion of the anchoring device, the problems of wasted manpower, material resources, and time in the existing wooden model tests were solved, the test efficiency was improved, and reliable results were obtained.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, ship anchoring simulation tests for anchor lip structures are mainly conducted through wooden model tests, resulting in a waste of manpower, material resources, and time.
Computer-aided engineering analysis tools were used to create three-dimensional models of the anchoring device and the ship's hull structure. Anchoring motion simulation tests were conducted to evaluate the fit between the anchor and the anchor lip.
This greatly saves on materials, costs, and time for wooden mold testing, improves the efficiency of anchor testing, and yields more reliable test results.
Smart Images
Figure CN120716889B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ship anchor testing technology, and in particular to a simulation test method for anchoring devices. Background Technology
[0002] Anchor pulling tests are the most direct and important way to verify the safety and reliability of a ship's anchoring system, and are an indispensable procedure in shipbuilding, especially for first-of-its-kind ships. Currently, anchor pulling simulation tests for ship anchor lip structures are conducted using wooden model tests, which require continuous adjustments to find the most suitable anchor lip shape.
[0003] However, conducting anchor tests using wooden molds is a waste of manpower, resources, and time. Summary of the Invention
[0004] The purpose of this application is to provide a simulation test method for anchoring devices, thereby solving the problem that the current simulation test of anchoring of ships with anchor lip structure is carried out through wooden model test. However, anchoring test through wooden model test is a great waste of manpower, material resources and time.
[0005] This application provides a simulation test method for anchoring devices, including:
[0006] Modeling steps for anchoring devices and hull structures: Based on the actual design drawings of anchoring devices and hull structures, three-dimensional models of anchoring devices and hull structures are created respectively.
[0007] The assembly and modeling steps for the anchoring device and hull structure are as follows: the three-dimensional models of the anchoring device and hull structure are assembled and positioned to obtain the assembled test three-dimensional model.
[0008] The steps for inputting simulation parameters for the anchor test are as follows: input the simulation test conditions, input a constant speed or a constant tension, and conduct an anchor motion simulation test.
[0009] The simulation results evaluation steps for the anchor and anchor lip fit state are as follows: Based on the simulation test results, it is determined whether the anchor crown and both anchor claws are reliably fitted with the anchor lip.
[0010] In any of the above technical solutions, further, in the modeling steps of the anchoring device and the hull structure, establishing a three-dimensional model of the anchoring device includes:
[0011] Based on the design drawings of the actual anchoring system, three-dimensional models of the anchor, anchor platform, anchor lip, anchor chain tube, guide chain roller, chain puller, anchor winch, anchor chain tube, anchor chain compartment, anchor release device, and anchor chain are established respectively.
[0012] In any of the above technical solutions, a further step is included: a hull state adjustment step following the anchoring device and hull structure assembly modeling step.
[0013] The assembled three-dimensional test model was adjusted to either a forward tilt or a backward tilt according to the ship's tilt; in either the forward tilt or backward tilt state, the bottom of the ship formed a 3° angle with the horizontal plane.
[0014] In any of the above technical solutions, a further step is included: a hull state adjustment step following the anchoring device and hull structure assembly modeling step.
[0015] The assembled three-dimensional test model was adjusted to either a port or starboard tilt according to the ship's tilt condition; in either port or starboard tilt, the ship's centerline formed a 5° angle with the vertical plane.
[0016] In any of the above technical solutions, furthermore, in the step of inputting simulation parameters for the anchor test, it is also necessary to input a friction coefficient of 0.4 to 0.6, or 0.2 to 0.3.
[0017] In any of the above technical solutions, further, in the step of inputting simulation parameters for the anchor test, the constant speed input is 200mm / s, 160mm / s, 120mm / s or 80mm / s.
[0018] In any of the above technical solutions, further, in the simulation result evaluation step of the anchor and anchor lip fitting state, if during the anchor storage process, one anchor claw is stuck above the anchor lip and the other anchor claw is suspended, it indicates that the anchor crown and the two anchor claws are not reliably fitted with the anchor lip; if during the anchor storage process, one or two anchor claws are stuck below the anchor lip, it indicates that the anchor crown and the two anchor claws are not reliably fitted with the anchor lip.
[0019] If there is a gap between the anchor crown or the two anchor claws and the anchor lip during the anchor storage process, it indicates that the anchor crown and the two anchor claws are not reliably fitted to the anchor lip.
[0020] If the anchor crown and both prongs are in contact with the anchor lip during the anchor storage process, it indicates that the anchor crown and both prongs are reliably in contact with the anchor lip.
[0021] In any of the above technical solutions, a modification step is further included after the simulation result evaluation step of the anchor and anchor lip fitting state:
[0022] If the simulation results indicate that the anchor crown and two anchor claws do not reliably fit with the anchor lip, then modify the design structure of the anchor lip and repeat the test.
[0023] In any of the above technical solutions, a further step is included: an anchor state adjustment step following the modeling steps for the anchoring device and hull structure assembly.
[0024] Adjust the anchor claw position according to the assembled three-dimensional test model, take the anchor itself as the origin, and point the anchor claw to different positions, and repeat the test in different positions.
[0025] In any of the above technical solutions, further, in the anchor state adjustment step, every 15° is a position of the anchor claw, and the anchor claw positions are defined as positions 1 to 24, where positions 6 and 18 are on the X-axis, and positions 12 and 24 are on the Y-axis.
[0026] If the anchor lip is a symmetrical anchor lip and the anchor is a balanced anchor, then the anchor claw positions should be selected at positions 6, 24, 18 and 12 for repeated testing.
[0027] If the anchor lip is symmetrical and the anchor is unbalanced, the anchor claw positions are selected at positions 1, 5, 9, 13, 17 and 21 respectively for repeated testing;
[0028] If the anchor lip is asymmetrical and the anchor is a balanced anchor, the anchor claw positions should be selected at positions 1, 4, 7, 10, 13, 16, 19 and 22 for repeated testing.
[0029] Based on the above technical features, the beneficial effects of this application are as follows:
[0030] This application utilizes computer-aided engineering analysis tools to establish three-dimensional models of the anchoring device and hull structure based on the design drawings of the actual anchoring device and hull. Then, based on the assembled experimental three-dimensional model, a simulation test of anchor pulling motion is conducted by inputting a constant speed or constant tension. During the simulated anchor pulling test, the motion state of the anchoring device and the anchor engagement and retraction position are evaluated to determine whether they meet the design standards.
[0031] In other words, this application solves the problems of waste of manpower, material resources, time and low efficiency in existing wooden model tests by establishing a three-dimensional model for motion simulation tests. It greatly saves materials, costs and construction time in wooden model tests, greatly improves the efficiency of anchoring tests, and the test results obtained are more reliable.
[0032] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 A design drawing of an actual anchoring device according to an embodiment of this application is shown;
[0035] Figure 2 A schematic diagram showing the hull tilted forward in an embodiment of this application;
[0036] Figure 3 A schematic diagram showing the hull tilted backwards according to an embodiment of this application;
[0037] Figure 4 A schematic diagram illustrating the ship's hull listing to port or starboard according to an embodiment of this application;
[0038] Figure 5 A schematic diagram showing the distribution of different positions of the anchor claws in an embodiment of this application;
[0039] Figure 6 A schematic diagram of an outward-facing anchor according to an embodiment of this application is shown;
[0040] Figure 7 A schematic diagram of an inward-turning anchor according to an embodiment of this application is shown;
[0041] Figure 8 A schematic diagram illustrating unstable bonding according to an embodiment of this application;
[0042] Figure 9 A schematic diagram of three-point bonding according to an embodiment of this application is shown;
[0043] Figure 10 A schematic diagram of four-point bonding of an embodiment of this application is shown.
[0044] Icons: 1-Anchor; 2-Anchor platform; 3-Anchor chain tube; 4-Chain puller; 5-Chain guide roller; 6-Anchor winch; 7-Anchor chain tube; 8-Anchor chain compartment; 9-Anchor release device; 10-Anchor chain; 11-Anchor lip. Detailed Implementation
[0045] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.
[0046] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0047] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.
[0048] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0049] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0050] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.
[0051] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0052] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0053] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.
[0054] Prior to this application, ship anchoring simulation tests for anchor lips were currently conducted using wooden model tests, which required continuous adjustments to determine the optimal anchor lip shape. However, conducting anchoring tests using wooden models resulted in significant waste of manpower, resources, and time.
[0055] In view of this, this application provides a simulation test method for anchoring devices, thereby solving the problem of significant waste of manpower, material resources, and time in existing anchoring tests conducted using wooden molds. See below for reference. Figures 1 to 10 This paper describes the simulation test method for the anchoring device of this application.
[0056] The simulation test method for anchoring devices in this application includes:
[0057] S1, Modeling steps for anchoring devices and hull structure:
[0058] Three-dimensional models of the anchoring system and hull structure are established based on the actual anchoring system and hull design drawings.
[0059] S2, the assembly and modeling steps for the anchoring device and hull structure, involves assembling and positioning the three-dimensional models of the anchoring device and hull structure to obtain the assembled three-dimensional test model.
[0060] S3, Input steps for anchor test simulation parameters: Input simulation test conditions, input constant speed or constant tension, and conduct anchor motion simulation test.
[0061] S4, Evaluation steps for simulation results of anchor and anchor lip fit: Based on the simulation test results, determine whether the anchor crown and both anchor claws are reliably fitted with the anchor lip.
[0062] As described above, this application utilizes computer-aided engineering analysis tools to establish three-dimensional models of the anchoring device and the hull structure based on the design drawings of the actual anchoring device and the hull. Then, based on the assembled experimental three-dimensional model, a simulation test of anchor pulling motion is conducted by inputting a constant speed or a constant tension. During the simulated anchor pulling test, the motion state of the anchoring device and the anchor engagement and retraction position are evaluated to determine whether they meet the design standards.
[0063] In other words, this application solves the problems of significant waste of manpower, resources, and time, as well as low efficiency, in existing wooden model tests by establishing a three-dimensional model for motion simulation experiments. It greatly saves materials, costs, and construction time in wooden model tests, significantly improves the efficiency of anchoring tests, and yields more reliable test results. See below for reference. Figures 1 to 10 The simulation test method for the anchoring device of this application is described in detail.
[0064] The simulation test method for anchoring devices in this application includes:
[0065] S1, Modeling steps for anchoring devices and hull structure:
[0066] Three-dimensional models of the anchoring system and hull structure are established based on the actual anchoring system and hull design drawings.
[0067] The three-dimensional model of the anchoring device was established based on the actual anchoring device design drawings, specifically creating three-dimensional models of anchor 1, anchor platform 2, anchor lip 11, anchor chain tube 3, guide chain roller 5, chain pulley 4, anchor winch 6, anchor chain tube 7, anchor chain compartment 8, anchor release device 9, and anchor chain 10. In other words, the virtual assembly layout model of the anchoring device was created using 3D modeling software, and its dimensions are consistent with the design drawings and the standard specifications of each component. Figure 1 The design layout diagram shows the assembly of the components to their designed locations.
[0068] When modeling the anchoring system, the anchoring assembly components, including anchor chain 10, anchor 1, anchor lip 11, anchor platform 2, and anchor chain cylinder 3, should be consistent with the design drawings and component standards. The center position of the chain stopper, the base inclination angle, the size of the guide roller, and the size and position of the chuck should be consistent with the design drawings and component standards. The swivel or swivel shackle installed at the end of the anchor chain connecting to the anchor must strictly adhere to the design scheme; the two cannot be substituted for each other.
[0069] S2, Modeling steps for anchoring devices and hull structure assembly:
[0070] The three-dimensional models of the above-mentioned anchoring device and hull structure are assembled and positioned to obtain the assembled test three-dimensional model.
[0071] S21, the simulation test method for anchoring devices in this application also includes a hull state adjustment step after the assembly and modeling step of the anchoring device and hull structure:
[0072] The assembled 3D test model was adjusted to either a forward-leaning or a backward-leaning state according to the ship's tilt; in either the forward-leaning or a backward-leaning state, the bottom of the ship formed a 3° angle with the horizontal plane. The assembled 3D test model was then adjusted to either a left-leaning or right-leaning state according to the ship's tilt; in either the left-leaning or right-leaning state, the bow centerline formed a 5° angle with the vertical plane.
[0073] In other words, the ship's hull state is set when anchoring, and during the anchoring test, the ship tilts forward depending on its tilt. Figure 2 ), leaning back ( Figure 3 ), left-leaning and right-leaning ( Figure 4 There are four states, and anchoring tests need to be conducted for each of the four anchoring states.
[0074] After adjusting the hull conditions, simulation test conditions were input, including constant speed or constant tension, to conduct anchor pulling motion simulation tests. Based on the simulation test results, it was determined whether the anchor crown and both anchor claws were reliably engaged with the anchor lip. This design allows for assessment of whether the anchor engagement and retraction position meets design standards under various hull conditions, further increasing the comprehensiveness of the test.
[0075] S22, the simulation test method for anchoring devices in this application also includes an anchor state adjustment step after the assembly and modeling step of the anchoring device and hull structure:
[0076] Adjust the position of the anchor claws according to the assembled three-dimensional test model, with the anchor itself as the origin, and point the anchor claws to different positions (or point the anchor tip / anchor crown to different positions), and repeat the test in different positions.
[0077] As an example, such as Figure 5As shown, in the anchor state adjustment step, each 15° is considered an anchor claw position. The anchor claw positions are defined as positions 1 to 24, where positions 6 and 18 are on the X-axis, and positions 12 and 24 are on the Y-axis.
[0078] As shown in Table 1 below, if the anchor lip is symmetrical and the anchor is a balanced anchor, the anchor claw positions should be selected at positions 6, 24, 18, and 12 for repeated testing. If the anchor lip is symmetrical and the anchor is unbalanced, the anchor claw positions should be selected at positions 1, 5, 9, 13, 17, and 21 for repeated testing. If the anchor lip is asymmetrical and the anchor is balanced, the anchor claw positions should be selected at positions 1, 4, 7, 10, 13, 16, 19, and 22 for repeated testing.
[0079] According to Table 1 below, this application selects the anchor lip type and corresponding anchor type, and conducts anchoring tests at the corresponding anchoring positions. After adjusting the anchor state, simulation test conditions are entered, including constant speed or constant tension, to conduct anchoring motion simulation tests. Based on the simulation test results, it is determined whether the anchor crown and both anchor claws are reliably in contact with the anchor lip. This design allows for the determination of whether the anchor engagement and retraction position meets the design standards under different anchor claw positions, further increasing the comprehensiveness of the test.
[0080] Table 1 Anchor Lip and Selection Table
[0081] serial number Anchor lip selection Anchor type Anchor position 1 Symmetrical anchor lip Balance Anchor 6、24、18、12 2 Symmetrical anchor lip Unbalanced anchor 1、5、9、13、17、21 3 Asymmetric anchor lip Balance Anchor 1、4、7、10、13、16、19、22
[0082] In other words, the regulations for setting the anchor position during anchoring stipulate that the anchoring test uses any position between the anchor tip / claw and the hull as position 1, with each 15° interval representing an anchoring position. To ensure the authenticity and reliability of the anchoring test and avoid misjudgments caused by accidental phenomena, a complete anchoring test should include... Figure 5 Repeated anchoring actions at 24 different anchoring positions.
[0083] S3, Input steps for anchor test simulation parameters: Input simulation test conditions, input constant speed or constant tension, and conduct anchor motion simulation test.
[0084] In the parameter input step of the anchor test simulation, the anchor drive input can be set to constant speed or constant tension. The constant speed is divided into four levels: fast, medium, slow, and contact speed, which are 200mm / s, 160mm / s, 120mm / s, or 80mm / s, respectively. The specific constant speeds are shown in Table 2.
[0085] The constant tension force can be determined by repeatedly pulling the anchor using the bisection method to find the minimum gripping force F. Then, during the simulation experiment, it can be input within the range of [F-1.5F]. Alternatively, the constant tension force can be configured directly according to the anchor winch output parameters. The minimum anchor winch tension F for the anchor test is determined by repeatedly pulling the anchor using the bisection method, and the safety setting value for the anchor winch tension is F×150%.
[0086] Table 2 Anchoring Speed Selection Table
[0087] serial number Speed level Value (mm / s) 1 fast 200 2 medium speed 160 3 slow 120 4 Adhesion speed 80
[0088] Additionally, in step S3, during the input of simulation parameters for the anchor test, a friction coefficient of 0.4–0.6 or 0.2–0.3 must be entered. This means that the friction coefficient of the anchor components varies under different conditions, and the settings for the friction coefficient under different conditions are shown in Table 3.
[0089] Table 3 Friction Coefficient Setting Table
[0090] serial number Material type state coefficient of friction 1 steel Unpainted 0.4～0.6 2 steel Paint 0.2～0.3
[0091] In step S3 above, after the three-dimensional test model is adjusted according to requirements, constant speed and constant tension are input in the simulation settings. In this embodiment, the simulation test process can use anchor test simulation software.
[0092] S4, Steps for evaluating simulation results of anchor and anchor lip fit:
[0093] Based on the simulation test results, determine whether the anchor crown and both anchor claws are reliably fitted with the anchor lip.
[0094] Specifically, the anchor and anchor lip fit is classified into two types: unstable fit and reliable fit. Anchor clamping types are further divided into outward-facing clamping anchors and inward-facing clamping anchors.
[0095] like Figure 6 As shown, outward-turned anchor: If, during the anchor storage process, one anchor claw is stuck above the anchor lip while the other anchor claw is suspended in the air, it indicates that the anchor crown and the two anchor claws are not reliably attached to the anchor lip.
[0096] like Figure 7 As shown, inward-turning and jamming anchor: During the downward movement and retraction of the anchor claws, if one or both anchor claws get stuck below the anchor lip and cannot be properly turned to the upward-facing position for retraction, it indicates that the anchor crown and the two anchor claws are not reliably attached to the anchor lip.
[0097] like Figure 8As shown, unstable fit: If during the anchor storage process, the anchor and anchor lip are only two points of fit, and there is a certain gap between the anchor crown or the two anchor claws and the anchor lip, although the anchor can be smoothly rotated and fitted along the anchor lip, the anchor is not fixed because it is under two-point force. This indicates that the anchor crown and the two anchor claws are not reliably fitted with the anchor lip.
[0098] like Figure 9 and Figure 10 As shown, reliable bonding is divided into two types: three-point bonding and four-point bonding. For example... Figure 9 As shown, the three-point fit refers to the three points: the two anchor claws and the anchor crown. Figure 10 As shown, the four-point fit refers to the four points on both sides of the anchor claws and the two sides of the anchor crown. That is, if the anchor crown and both anchor claws are in contact with the anchor lip during the anchor retrieval process, it means that the anchor crown and both anchor claws are reliably in contact with the anchor lip.
[0099] This design provides a basis for verification and evaluation in the simulation test method of anchoring devices (anchor lips) for digital simulation.
[0100] Furthermore, the simulation test method for anchoring devices in this application also includes a modification step S5 after the simulation result evaluation step of the anchor and anchor lip contact state:
[0101] If the simulation results indicate that the anchor crown and two anchor claws do not reliably fit with the anchor lip, then modify the design structure of the anchor lip and repeat the test.
[0102] In summary, the anchoring device simulation test method of this application uses computer-aided engineering analysis tools to simulate the anchoring device layout of the anchor lip structure. Based on the three-dimensional layout and assembly model, the method simulates the anchoring test process by setting a constant anchoring speed or constant tension, and evaluates whether the motion state of the anchoring components, the anchor fitting and storage position, the component contact and collision state, the anchor chain motion state, and the position of the chain stopper meet the design standards.
[0103] It is worth mentioning that, although digital simulation is already quite mature in the current technology, there is still a lack of verification methods for digital testing of anchor lip structures.
[0104] Therefore, this application provides a simulation test method for anchoring devices. Based on an assembled three-dimensional test model (mainly for the anchor lip structure), a constant speed or constant tension is input to conduct a simulated anchoring motion test. During the simulated anchoring test, the motion state of the anchoring device and whether the anchor engagement and retraction position meet the design standards are evaluated. In other words, this application solves the problems of significant waste of manpower, material resources, and time, as well as low efficiency, in existing wooden model tests by establishing a three-dimensional model for motion simulation testing. It greatly saves materials, costs, and construction time in wooden model tests, significantly improves the efficiency of anchoring tests, and yields more reliable test results.
[0105] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.
Claims
1. A simulation test method for an anchoring device, characterized in that, include: Modeling steps for anchoring devices and hull structures: Based on the actual design drawings of anchoring devices and hull structures, three-dimensional models of anchoring devices and hull structures are created respectively. The assembly and modeling steps for the anchoring device and hull structure are as follows: the three-dimensional models of the anchoring device and hull structure are assembled and positioned to obtain the assembled test three-dimensional model. The steps for inputting simulation parameters for the anchor test are as follows: input the simulation test conditions, input a constant speed or a constant tension, and conduct an anchor motion simulation test. The simulation results evaluation steps for the anchor and anchor lip fit state are as follows: Based on the simulation test results, it is determined whether the anchor crown and the two anchor claws are reliably fitted with the anchor lip. This also includes the anchor state adjustment step after the anchoring device and hull structure assembly modeling steps: Adjust the position of the anchor claws according to the assembled three-dimensional test model, take the anchor itself as the origin, and point the anchor claws to different positions, and repeat the test in different positions. In the anchor state adjustment step, each 15° is considered an anchor claw position. The anchor claw positions are defined as positions 1 to 24, where positions 6 and 18 are on the X-axis, and positions 12 and 24 are on the Y-axis. If the anchor lip is a symmetrical anchor lip and the anchor is a balanced anchor, then the anchor claw positions should be selected at positions 6, 24, 18 and 12 for repeated testing. If the anchor lip is symmetrical and the anchor is unbalanced, the anchor claw positions are selected at positions 1, 5, 9, 13, 17 and 21 respectively for repeated testing; If the anchor lip is asymmetrical and the anchor is a balanced anchor, the anchor claw positions should be selected at positions 1, 4, 7, 10, 13, 16, 19 and 22 for repeated testing.
2. The simulation test method for anchorage devices according to claim 1, characterized in that, In the modeling steps for anchoring devices and ship hull structures, establishing a 3D model of the anchoring device includes: Based on the design drawings of the actual anchoring system, three-dimensional models of the anchor, anchor platform, anchor lip, anchor chain tube, guide chain roller, chain puller, anchor winch, anchor chain tube, anchor chain compartment, anchor release device, and anchor chain are established respectively.
3. The simulation test method for anchorage devices according to claim 1, characterized in that, This also includes hull condition adjustment steps following the anchoring and hull structure assembly modeling steps: The assembled three-dimensional test model was adjusted to either a forward tilt or a backward tilt according to the ship's tilt; in either the forward tilt or backward tilt state, the bottom of the ship formed a 3° angle with the horizontal plane.
4. The simulation test method for anchorage devices according to claim 1, characterized in that, It also includes hull condition adjustment steps following the anchoring and hull structure assembly modeling steps: The assembled three-dimensional test model was adjusted to either a port or starboard tilt according to the ship's tilt condition; in either port or starboard tilt, the ship's centerline formed a 5° angle with the vertical plane.
5. The simulation test method for anchorage devices according to claim 1, characterized in that, In the step of inputting simulation parameters for the anchor test, it is also necessary to input the friction coefficient of 0.4~0.6 or 0.2~0.
3.
6. The simulation test method for anchoring devices according to claim 1, characterized in that, In the parameter input step of the anchor test simulation, the constant speed input is 200mm / s, 160mm / s, 120mm / s or 80mm / s.
7. The simulation test method for anchorage devices according to claim 1, characterized in that, In the simulation result evaluation step of the anchor and anchor lip fitting state, If, during the anchor storage process, one of the anchor claws gets stuck above the anchor lip while the other is suspended in the air, it indicates that the anchor crown and the two anchor claws are not reliably attached to the anchor lip. If one or both anchor claws get stuck under the anchor lip during anchor storage, it indicates that the anchor crown and the two anchor claws are not reliably fitted to the anchor lip. If there is a gap between the anchor crown or the two anchor claws and the anchor lip during the anchor storage process, it indicates that the anchor crown and the two anchor claws are not reliably fitted to the anchor lip. If the anchor crown and both prongs are in contact with the anchor lip during the anchor storage process, it indicates that the anchor crown and both prongs are reliably in contact with the anchor lip.
8. The simulation test method for anchorage devices according to claim 1, characterized in that, It also includes modification steps after the simulation result evaluation step of the anchor and anchor lip fitting state: If the simulation results indicate that the anchor crown and two anchor claws do not reliably fit with the anchor lip, then modify the design structure of the anchor lip and repeat the test.