Anchoring device simulation test method

Abstract

The invention relates to the technical field of ship anchor pulling tests, in particular to an anchoring device simulation test method. The anchoring device simulation test method comprises the following steps: modeling an anchoring device and a ship body structure, namely respectively establishing three-dimensional models of the anchoring device and the ship body structure according to the actual design drawings of the anchoring device and the ship body; an anchoring device and hull structure assembling and modeling step: assembling and positioning the three-dimensional models of the anchoring device and the hull structure to obtain an assembled test three-dimensional model; an anchor-pulling test simulation parameter input step: inputting simulation test conditions, inputting a constant speed or a constant pulling force, and carrying out an anchor-pulling motion simulation test; and an anchor and anchor mouth fitting state simulation result evaluation step: according to a simulation test result, judging whether an anchor crown and two anchor flukes of the anchor are reliably fitted with the anchor mouth. According to the simulation test method for the anchoring device, the problem of great waste in manpower, material resources and time due to the fact that an anchor pulling test is carried out through a wood pattern test in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of ship anchor pulling tests, and in particular to a simulation test method for an anchoring device. Background Art

[0002] Anchor testing is the most intuitive and important means of verifying the safety and reliability of a ship's anchoring system. It is an essential process in shipbuilding, especially in the construction of first ships. Simulation tests of anchor lip structures are currently conducted using wooden model tests, which require continuous adjustment to determine the optimal anchor lip shape.

[0003] However, conducting anchor tests through wooden mold tests results in a huge waste of manpower, material resources and time. Summary of the Invention

[0004] The purpose of the present application is to provide a simulation test method for an anchoring device, thereby solving the problem that the anchor pulling simulation test of the anchor lip structure of a ship is currently carried out through a wooden mold test. However, the anchor pulling test through the wooden mold test has a great waste of manpower, material resources and time.

[0005] According to the present application, a method for simulating an anchoring device is provided, comprising:

[0006] The anchoring device and hull structure modeling step is to respectively establish three-dimensional models of the anchoring device and the hull structure according to the actual design drawings of the anchoring device and the hull;

[0007] Anchoring device and hull structure assembly modeling step, assembling and positioning the three-dimensional models of the anchoring device and the hull structure to obtain an assembled test three-dimensional model;

[0008] Anchor pulling test simulation parameter input step: input simulation test conditions, input constant speed or constant tension, and conduct anchor pulling motion simulation test;

[0009] The step of evaluating the simulation results of the fitting state of the anchor and the anchor lip is to judge whether the anchor crown and the two anchor claws of the anchor are reliably fitted with the anchor lip according to the simulation test results.

[0010] In any of the above technical solutions, further, in the step of modeling the anchoring device and the hull structure, establishing a three-dimensional model of the anchoring device includes:

[0011] According to the design drawings of the actual anchoring device, three-dimensional models of the anchor, anchor platform, anchor lip, anchor chain barrel, chain guide roller, chain stopper, anchor windlass, anchor chain pipe, anchor chain locker, anchor abandoner and anchor chain are established respectively.

[0012] In any of the above technical solutions, further, the method further includes a hull state adjustment step after the anchoring device and hull structure assembly modeling step:

[0013] The assembled test three-dimensional model is adjusted to a forward tilt state or aft tilt state according to the tilt of the hull; in the forward tilt state or aft tilt state, the bottom of the ship forms an angle of 3° with the horizontal plane.

[0014] In any of the above technical solutions, further, the method further includes a hull state adjustment step after the anchoring device and hull structure assembly modeling step:

[0015] The assembled test three-dimensional model is adjusted to a left-tilted state or a right-tilted state according to the tilt of the hull; in the left-tilted state or the right-tilted state, the centerline of the hull forms an angle of 5° with the vertical plane.

[0016] In any of the above technical solutions, further, in the step of inputting simulation parameters of 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 anchor test simulation parameter input step, the input constant speed is 200 mm / s, 160 mm / s, 120 mm / s or 80 mm / s.

[0018] In any of the above technical solutions, further, in the step of evaluating the simulation result of the fitting state of the anchor and the anchor lip, if, during the stowage process of the anchor, one of the anchor claws is stuck above the anchor lip and the other anchor claw is suspended in the air, it indicates that the anchor crown and the two anchor claws of the anchor are not reliably fitted to the anchor lip; if, during the stowage process of the anchor, one or both of the anchor claws are stuck below the anchor lip, it indicates that the anchor crown and the two anchor claws of the anchor are not reliably fitted to 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 stowage process, it means that the anchor crown and the two anchor claws are not securely attached to the anchor lip;

[0020] If the anchor crown and two anchor claws are in contact with the anchor lip during the anchor storage process, it means that the anchor crown and two anchor claws are in contact with the anchor lip reliably.

[0021] In any of the above technical solutions, further comprising a modification step after the step of evaluating the simulation result of the anchor and anchor lip fitting state:

[0022] If the simulation results indicate that the anchor crown and two anchor claws do not fit securely with the anchor lip, the design structure of the anchor lip is modified and the test is repeated.

[0023] In any of the above technical solutions, further, the method further includes an anchor state adjustment step after the anchoring device and hull structure assembly modeling step:

[0024] Adjust the position of the anchor claw according to the assembled test three-dimensional model, take the anchor itself as the origin, 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, the anchor positions are defined as positions 1 to 24 every 15°, wherein 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 symmetrical and the anchor is a balanced anchor, repeat the test at positions 6, 24, 18 and 12 respectively.

[0027] If the anchor lip is symmetrical and the anchor is unbalanced, repeat the test at positions 1, 5, 9, 13, 17 and 21 of the anchor claws.

[0028] If the anchor lip is asymmetric and the anchor is a balanced anchor, the test is repeated at positions 1, 4, 7, 10, 13, 16, 19 and 22 of the anchor claws.

[0029] According to the above technical features, the beneficial effects of this application are:

[0030] This application utilizes computer-aided engineering analysis tools to establish three-dimensional models of the anchoring device and the hull structure, respectively, based on the actual design drawings of the anchoring device and the hull. Subsequently, based on the assembled test three-dimensional model, an anchor pulling motion simulation test is performed by inputting a constant speed or a constant pulling force. During the simulated anchor pulling test, it is evaluated whether the motion state of the anchoring device and the anchor fitting and storage position meet the design standards.

[0031] In other words, this application solves the problems of large amount of manpower, material resources, time waste and low efficiency in existing wooden mold tests by establishing a three-dimensional model for motion simulation tests, greatly saving materials, costs and construction period of wooden mold tests, greatly improving the efficiency of anchoring tests, and the test results obtained are more reliable.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A design diagram showing an actual anchoring device according to an embodiment of the present application;

[0035] Figure 2 A schematic diagram showing a forward tilted state of a hull according to an embodiment of the present application;

[0036] Figure 3 A schematic diagram showing a hull tilted backward according to an embodiment of the present application;

[0037] Figure 4 A schematic diagram showing a ship hull in a state of listing to the left or listing to the right according to an embodiment of the present application;

[0038] Figure 5 A schematic diagram showing the distribution of flukes at different positions according to an embodiment of the present application;

[0039] Figure 6 A schematic diagram of an external eversion anchor according to an embodiment of the present application is shown;

[0040] Figure 7 A schematic diagram of an inverted anchor according to an embodiment of the present application is shown;

[0041] Figure 8 A schematic diagram showing unstable bonding of an embodiment of the present application;

[0042] Figure 9 A schematic diagram showing three-point bonding according to an embodiment of the present application is shown;

[0043] Figure 10 A four-point bonding schematic diagram of an embodiment of the present application is shown.

[0044] Icons: 1-anchor; 2-anchor platform; 3-anchor chain barrel; 4-chain stopper; 5-chain guide roller; 6-anchor windlass; 7-anchor chain pipe; 8-anchor chain locker; 9-anchor abandoner; 10-anchor chain; 11-anchor lip. DETAILED DESCRIPTION

[0045] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon 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. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[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 possible ways to implement the methods, devices, 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,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0048] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0049] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0050] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," 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 relational terms used herein will be interpreted accordingly.

[0051] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0052] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0053] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0054] Prior to the present application, ship anchor lip structure simulation tests were currently conducted through wooden model tests, which required continuous adjustment of the wooden model test to find the most suitable anchor lip linear shape. However, conducting anchor lip tests through wooden model tests was a significant waste of manpower, material resources, and time.

[0055] In view of this, the present application provides a method for simulating the test of anchoring device, thereby solving the problem that the existing method of conducting anchoring test by wooden model test wastes a lot of manpower, material resources and time. Figures 1 to 10 The present invention describes the anchoring device simulation test method.

[0056] The anchoring device simulation test method of the present application includes:

[0057] S1, anchoring device and hull structure modeling steps:

[0058] According to the actual design drawings of the anchoring device and the hull, three-dimensional models of the anchoring device and the hull structure are established respectively.

[0059] S2, the anchoring device and hull structure assembly modeling step, assembles and positions the three-dimensional models of the anchoring device and the hull structure to obtain an assembled test three-dimensional model.

[0060] S3, the step of inputting simulation parameters of the anchor pulling test, inputting simulation test conditions, inputting a constant speed or a constant pulling force, and performing an anchor pulling motion simulation test.

[0061] S4, a step of evaluating the simulation results of the fitting state of the anchor and the anchor lip, determines whether the anchor crown and the two anchor claws of the anchor are reliably fitted with the anchor lip according to the simulation test results.

[0062] As described above, the present application utilizes computer-aided engineering analysis tools to establish three-dimensional models of the anchoring device and the hull structure respectively according to the design drawings of the actual anchoring device and the hull, and then, based on the assembled test three-dimensional model, conducts an anchor pulling motion simulation test by inputting a constant speed or a constant pulling force; during the simulated anchor pulling test, it is evaluated whether the motion state of the anchoring device and the anchor fitting and storage position meet the design standards.

[0063] In other words, this application solves the problems of a large amount of manpower, material resources, time waste and low efficiency in existing wooden mold tests by establishing a three-dimensional model for motion simulation tests, greatly saving materials, costs and construction period for wooden mold tests, greatly improving the efficiency of anchor test, and the test results obtained are more reliable. Figures 1 to 10 The anchoring device simulation test method of the present application is described in detail.

[0064] The anchoring device simulation test method of the present application includes:

[0065] S1, anchoring device and hull structure modeling steps:

[0066] According to the actual design drawings of the anchoring device and the hull, three-dimensional models of the anchoring device and the hull structure are established respectively.

[0067] Among them, the three-dimensional model of the anchoring device is established according to the design drawing of the actual anchoring device, and the three-dimensional models of the anchor 1, anchor base 2, anchor lip 11, anchor chain tube 3, chain guide roller 5, chain stopper 4, anchor windlass 6, anchor chain tube 7, anchor chain locker 8, anchor abandoner 9 and anchor chain 10 are respectively established. In other words, the virtual assembly layout model of the anchoring device is built using three-dimensional modeling software, and the size is consistent with the design drawing and the standard regulations of each component. Figure 1 According to the design layout position drawing, assemble the components to the design layout position.

[0068] When modeling the anchor system, the anchor chain 10, anchor 1, anchor lip 11, anchor platform 2, and anchor chain barrel 3, among other components, must be consistent with the design drawings and component standards. The chain stopper's center position, base inclination angle, chain guide roller dimensions, and blade dimensions and position must also be consistent with the design drawings and component standards. The swivel or swivel shackle installed at the anchor end of the anchor chain must strictly adhere to the design plan and cannot be interchanged.

[0069] S2, anchoring device and hull structure assembly modeling steps:

[0070] The three-dimensional models of the anchoring device and the hull structure are assembled and positioned to obtain an assembled test three-dimensional model.

[0071] S21, the anchoring device simulation test method of the present application further includes a hull state adjustment step after the anchoring device and hull structure assembly modeling step:

[0072] The assembled 3D test model was adjusted to either a forward or aft tilt state according to the hull tilt; in this state, the bottom of the ship formed a 3° angle with the horizontal plane. The assembled 3D test model was adjusted to either a left or right tilt state according to the hull tilt; in this state, the bow centerline formed a 5° angle with the vertical plane.

[0073] That is to say, the hull state setting when anchoring, when pulling anchor test, there is forward tilt according to the hull tilt ( Figure 2 ), backward tilt( Figure 3 ), left-leaning and right-leaning ( Figure 4 ) Four states, it is necessary to carry out anchor pulling tests respectively for the above four anchoring states.

[0074] After adjusting the hull state, the simulation test conditions were input, including constant speed or constant tension, to conduct anchor-pulling motion simulation tests. The results were used to determine whether the anchor crown and both flukes were securely attached to the anchor lip. This design allowed the determination of whether the anchor stowage position met design standards under various hull conditions, further enhancing the comprehensiveness of the test.

[0075] S22, the anchoring device simulation test method of the present application further includes an anchor state adjustment step after the anchoring device and hull structure assembly modeling step:

[0076] Adjust the position of the anchor claw according to the assembled test 3D model. With the anchor itself as the origin, point the anchor claw to different positions (or point the anchor tip / anchor crown to different positions), and repeat the test at different positions.

[0077] As an example, Figure 5As shown, in the anchor state adjustment step, every 15° is an anchor claw position, 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.

[0078] As shown in Table 1 below, if the anchor lip is symmetrical and the anchor is balanced, the fluke positions are selected for repeated testing at positions 6, 24, 18, and 12. If the anchor lip is symmetrical and the anchor is unbalanced, the fluke positions are selected for repeated testing at positions 1, 5, 9, 13, 17, and 21. If the anchor lip is unsymmetrical and the anchor is balanced, the fluke positions are selected for repeated testing at positions 1, 4, 7, 10, 13, 16, 19, and 22.

[0079] This application selects anchor lip types and corresponding anchor types according to the information in Table 1 below, and conducts anchor pulling tests at corresponding anchor pulling positions. After adjusting the anchor state, the simulation test conditions are input, including constant speed or constant tension, to conduct anchor pulling motion simulation tests. Based on the simulation test results, the anchor crown and both flukes are judged to ensure reliable contact with the anchor lip. This design allows the anchor to be judged in different fluke positions to determine whether the anchor meets the design requirements for stowage. This further enhances 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] That is to say, the anchor state setting regulations when pulling anchor, the anchor test takes the anchor tip / anchor claw and any position of the hull as position 1, and every 15° is the anchor position. In order to achieve the authenticity and reliability of the anchor test and avoid misjudgment caused by accidental phenomena, the complete anchor test should include Figure 5 Repeated anchor pulling action in 24 anchoring positions.

[0083] S3, the step of inputting simulation parameters of the anchor pulling test, inputting simulation test conditions, inputting a constant speed or a constant pulling force, and performing an anchor pulling motion simulation test.

[0084] During the anchor test simulation parameter input step, you can select constant speed or constant tension for the anchor drive input. The constant speed is divided into four levels: fast, medium, slow, and fitting speed, which are 200 mm / s, 160 mm / s, 120 mm / s, or 80 mm / s, respectively. The specific constant speeds are shown in Table 2.

[0085] For constant tension, the minimum ground-gripping force F can be determined by multiple anchor pulls using the binary method. This force can then be input within the range of [F - 1.5F] during the simulation. Alternatively, the constant tension can be configured directly according to the windlass output parameters. The minimum windlass tension F during the anchor pull test is determined using the binary method using multiple anchor pulls. The windlass tension safety setting value is F × 150%.

[0086] Table 2 Anchor pulling speed selection table

[0087] serial number Speed ​​level Value (mm / s) 1 fast 200 2 Medium speed 160 3 Slow 120 4 Fitting speed 80

[0088] In addition, in step S3, during the anchor test simulation parameter input step, a friction coefficient of 0.4 to 0.6 or 0.2 to 0.3 must also be input. In other words, the friction coefficient of the anchor component surface varies under different conditions. The friction coefficient settings for different conditions are shown in Table 3.

[0089] Table 3 Friction coefficient setting table

[0090] serial number Material Type state Friction coefficient 1 Steel Unpainted 0.4～0.6 2 Steel Paint 0.2～0.3

[0091] In the above step S3, after the test three-dimensional model is adjusted according to the requirements, a constant speed and a constant pulling force are input in the simulation setting. In this embodiment, the simulation test process can use the anchor test simulation software.

[0092] S4, evaluation steps of the simulation results of the fitting state of the anchor and the anchor lip:

[0093] Based on the simulation test results, it is determined whether the anchor crown and two anchor claws are reliably fitted with the anchor lip.

[0094] Specifically, the fit between the anchor and the anchor lip is divided into two types: unstable fit and reliable fit. The anchor types are divided into external anchor and internal anchor.

[0095] like Figure 6 As shown, outward-stuck anchor: If one of the anchor claws is stuck above the anchor lip and the other anchor claw is suspended in the air during the anchor storage process, it means that the anchor crown and two anchor claws are not securely fitted with the anchor lip.

[0096] like Figure 7 As shown, the anchor is stuck inward: when the anchor claws are moving downward to be stored, one or both anchor claws are stuck under the anchor lip and cannot be turned over normally to be stored upward. This means that the anchor crown and the two anchor claws are not reliably fitted with the anchor lip.

[0097] like Figure 8As shown, unstable fit: If the anchor and anchor lip are in two-point fit during anchor storage, there is a certain gap between the anchor crown or the two anchor claws and the anchor lip. Although the anchor is smoothly flipped and fitted along the anchor lip, the anchor is unstable because it is subjected to force at two points. This means that the anchor crown and the two anchor claws are not reliably fitted to the anchor lip.

[0098] like Figure 9 and Figure 10 As shown in the figure, reliable bonding is divided into two types: three-point bonding and four-point bonding. Figure 9 As shown in the figure, three-point fitting refers to the three points of the anchor claws and the anchor crown on both sides. Figure 10 As shown in the figure, the four-point fit refers to the four points on both sides of the anchor claws and the anchor crown. That is, if the anchor crown and both anchor claws fit the anchor lip during the anchor stowage process, it means that the anchor crown and both anchor claws fit the anchor lip reliably.

[0099] Such a design provides a basis for inspection and evaluation of digital simulation in the anchoring device (anchor lip) simulation test method.

[0100] In addition, the anchoring device simulation test method of the present application further includes a modification step S5 after the step of evaluating the simulation result of the anchor and anchor lip fitting state:

[0101] If the simulation results indicate that the anchor crown and two anchor claws do not fit securely with the anchor lip, the design structure of the anchor lip is modified and the test is repeated.

[0102] In summary, the anchoring device simulation test method of the present application adopts computer-aided engineering analysis tools for the layout of the anchoring device of the anchor lip structure. On the basis of the three-dimensional layout assembly model, the anchor pulling test process is simulated by setting a constant anchoring speed or constant tension to evaluate whether the movement state of the anchoring assembly, the anchor fitting and storage position, the component contact and collision state, the anchor chain movement state, the chain stopper position, etc. meet the design standards.

[0103] It is worth mentioning here that, although digital simulation is already very mature in the existing technology, there is still a blank in the inspection method of digital test of anchor lip structure.

[0104] Therefore, in view of this, the present application provides a method for simulating the testing of 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 an anchor pulling motion simulation test. During the simulated anchor pulling test, the motion state of the anchoring device and the anchor fitting and storage position are evaluated to see whether they meet the design standards. In other words, by establishing a three-dimensional model for motion simulation testing, the present application solves the problems of a large amount of manpower, material resources, and time waste and low efficiency in existing wooden mold tests, greatly saving materials, costs, and construction time for wooden mold tests, greatly improving the efficiency of anchor pulling tests, and obtaining more reliable test results.

[0105] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the scope of protection of the present application.

Claims

1. A simulation test method for an anchoring device, characterized in that: include: The anchoring device and hull structure modeling step is to respectively establish three-dimensional models of the anchoring device and the hull structure according to the actual design drawings of the anchoring device and the hull; Anchoring device and hull structure assembly modeling step, assembling and positioning the three-dimensional models of the anchoring device and the hull structure to obtain an assembled test three-dimensional model; Anchor pulling test simulation parameter input step: input simulation test conditions, input constant speed or constant tension, and conduct anchor pulling motion simulation test; The step of evaluating the simulation results of the fitting state of the anchor and the anchor lip is to judge whether the anchor crown and the two anchor claws of the anchor are reliably fitted with the anchor lip according to the simulation test results.

2. The anchoring device simulation test method according to claim 1, characterized in that: In the anchoring device and hull structure modeling step, establishing a 3D model of the anchoring device includes: According to the design drawings of the actual anchoring device, three-dimensional models of the anchor, anchor platform, anchor lip, anchor chain barrel, chain guide roller, chain stopper, anchor windlass, anchor chain pipe, anchor chain locker, anchor abandoner and anchor chain are established respectively.

3. The anchoring device simulation test method according to claim 1, characterized in that: It also includes the hull state adjustment step after the anchoring device and hull structure assembly modeling step: The assembled test three-dimensional model is adjusted to a forward tilt state or aft tilt state according to the tilt of the hull; in the forward tilt state or aft tilt state, the bottom of the ship forms an angle of 3° with the horizontal plane.

4. The anchoring device simulation test method according to claim 1, characterized in that: It also includes the hull state adjustment step after the anchoring device and hull structure assembly modeling step: The assembled test three-dimensional model is adjusted to a left-tilted state or a right-tilted state according to the tilt of the hull; in the left-tilted state or the right-tilted state, the centerline of the hull forms an angle of 5° with the vertical plane.

5. The anchoring device simulation test method according to claim 1, characterized in that: In the step of inputting the simulation parameters of the anchor test, it is also necessary to input a friction coefficient of 0.4 to 0.6, or 0.2 to 0.

3.

6. The anchoring device simulation test method according to claim 1, characterized in that: In the anchor test simulation parameter input step, the input constant speed is 200 mm / s, 160 mm / s, 120 mm / s or 80 mm / s.

7. The anchoring device simulation test method according to claim 1, characterized in that: In the evaluation step of the simulation results of the anchor and anchor lip fitting state, If one of the anchor claws is stuck above the anchor lip and the other anchor claw is hanging in the air during the anchor stowage process, it means that the anchor crown and two anchor claws are not securely attached to the anchor lip; If one or both of the flukes get stuck under the anchor lip during stowage, it means that the crown and flukes are not securely attached 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 stowage process, it means that the anchor crown and the two anchor claws are not securely attached to the anchor lip; If the anchor crown and two anchor claws are in contact with the anchor lip during the anchor storage process, it means that the anchor crown and two anchor claws are in contact with the anchor lip reliably.

8. The anchoring device simulation test method according to claim 1, characterized in that: It also includes the modification steps after the evaluation step of the simulation results of the anchor and anchor lip fitting state: If the simulation results indicate that the anchor crown and two anchor claws do not fit securely with the anchor lip, the design structure of the anchor lip is modified and the test is repeated.

9. The anchoring device simulation test method according to claim 1, characterized in that: It also includes the anchor state adjustment step after the anchoring device and hull structure assembly modeling step: Adjust the position of the anchor claw according to the assembled test three-dimensional model, take the anchor itself as the origin, point the anchor claw to different positions, and repeat the test in different positions.

10. The anchoring device simulation test method according to claim 9, characterized in that: In the anchor state adjustment step, the anchor claw positions are defined as positions 1 to 24 every 15°, 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 symmetrical and the anchor is a balanced anchor, repeat the test at positions 6, 24, 18 and 12 respectively. If the anchor lip is symmetrical and the anchor is unbalanced, repeat the test at positions 1, 5, 9, 13, 17 and 21 of the anchor claws. If the anchor lip is asymmetric and the anchor is a balanced anchor, the test is repeated at positions 1, 4, 7, 10, 13, 16, 19 and 22 of the anchor claws.

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