Marine equipment floating icebreaking impact environment scaling test method based on impact load equivalence

Abstract

The invention discloses a marine equipment floating icebreaking impact environment scaling test method based on impact load equivalence, and belongs to the field of marine equipment impact resistance tests. The problems that an existing method is high in test cost and poor in repeatability, and the accurate waveform of the load is difficult to control are solved. The method comprises the steps that scaling design is conducted on ocean equipment and an icebreaking load based on the similarity theory, and a scaling test model is obtained; carrying out equivalent processing on the icebreaking load, namely extracting a distributed load to form a cabin concentrated load, enabling time domain load data to be equivalent to a frequency domain impact spectrum based on an impact spectrum principle, and then converting the frequency domain impact spectrum into a triangular wave load; applying a triangular wave load to a specific cabin section of the scaling test model through a drop hammer impact device; impact response data are collected through an acceleration sensor and a strain gauge, and the transmission rule of the icebreaking load in the marine equipment and the impact environment of the important equipment are analyzed. The method is mainly used for ocean equipment structure optimization in the polar environment.

Description

Technical Field

[0001] This invention belongs to the field of marine equipment impact resistance testing, and in particular relates to a scaled-down test method for marine equipment surfacing and breaking ice impact environment based on equivalent impact load. Background Technology

[0002] The research on icebreaking and surfacing of marine equipment originates from the polar regions. The Arctic is perpetually covered by ice, and the activities of marine equipment in ice-covered areas such as the Arctic are becoming increasingly frequent. However, the presence of sea ice poses a serious threat to the safety of critical equipment on board. In polar environments, the ice loads experienced by marine equipment during icebreaking and surfacing can induce structural vibrations and impacts, thereby affecting equipment reliability. Therefore, simulating icebreaking loads and analyzing their transmission patterns through experiments is crucial. However, existing technologies have significant limitations in this area, making it difficult to accurately predict the impact environment of actual vessels under real icebreaking loads.

[0003] Currently, testing methods for icebreaking loads on marine equipment mainly rely on small-scale model tests. For example, Chinese patent CN120102084A discloses a lifting device for simulating the restraint, surfacing, and icebreaking of an underwater submersible in an ice-water pool. This device realistically simulates the surfacing and icebreaking process of a marine equipment model in an ice-water pool, obtaining structural impact data by directly observing the icebreaking behavior. Chinese patent CN119618592A proposes a simulated icebreaking device that first applies a downward load to a ballast head fixture under a known icebreaking load using external loading equipment, and then transfers the load to the test model through a wooden fixture. While these methods can partially reflect the effect of icebreaking loads, they are all limited to small-scale model tests. Due to the severe scale effect, the test results cannot accurately reflect the dynamic response of a real vessel under icebreaking loads. The scale effect leads to distortion of physical quantities after load scaling; for example, stress, strain, and impact transmission paths are distorted in small models, making it impossible to effectively generalize the test data to the scale of a real vessel, thus reducing the accuracy of predictions.

[0004] Furthermore, existing methods have shortcomings in terms of load application. Wei et al.'s lifting device relies on an ice-water pool environment, resulting in high experimental costs, poor repeatability, and difficulty in controlling the precise waveform of the load. While Yang et al.'s method uses external equipment for loading, the load transfer path is complex, easily introducing additional interference, and cannot efficiently simulate the transformation process from distributed loads to concentrated loads. These deficiencies make it difficult for existing technologies to meet the needs of large-scale model tests, especially in solving the high-precision research problem of the transmission law of icebreaking loads within marine equipment. Summary of the Invention

[0005] In view of this, the present invention aims to propose a scaled-down test method for the icebreaking impact environment of marine equipment based on equivalent impact load, so as to solve the problems of high test cost, poor repeatability and difficulty in controlling the precise waveform of the load in the existing methods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a scaled-down test method for the icebreaking impact environment of marine equipment based on equivalent impact load, the method comprising: Based on similarity theory, a scaled-down design of marine equipment and icebreaking loads is carried out to obtain a scaled-down marine equipment test model. The icebreaking load is equivalently processed, including extracting the distributed load to form the concentrated load of the compartment, converting the time-domain load data into a frequency-domain impact spectrum based on the impact spectrum principle, and then converting the frequency-domain impact spectrum into a triangular wave load, wherein the triangular wave load has an adjustable peak value and pulse width. The triangular wave load is applied to a specific section of a scaled-down marine equipment test model using a drop hammer impact device. Impact response data of marine equipment are collected by accelerometers and strain gauges to analyze the transmission law of icebreaking load in marine equipment and the impact environment of critical equipment.

[0007] Furthermore, a preferred method is proposed, wherein the scaled-down design is derived based on Buckingham's π theorem dimensional analysis method to obtain the scaled-down relationship of physical quantities between the prototype and the model.

[0008] Furthermore, a preferred method is proposed: when the time-domain load data is equivalent to the frequency-domain impact spectrum based on the impact spectrum principle, the concentrated load is used as the input instead of acceleration, so that the spectral acceleration is converted into the spectral load, the spectral velocity is converted into the spectral momentum, and then the product of the spectral displacement and the mass is converted into the spectral energy through the gravitational acceleration.

[0009] Furthermore, a preferred embodiment is proposed, wherein the conversion of the frequency domain impulse spectrum into a triangular wave load includes:

[0010]

[0011]

[0012] in, It is the peak load. It is a spectrum of impact loads. It is spectral momentum. It is a triangular wave period. This is the moment when the load reaches its peak.

[0013] Furthermore, a preferred embodiment is proposed in which the peak value and pulse width of the triangular wave load are determined by the following formula:

[0014]

[0015]

[0016]

[0017]

[0018] in, The height the hammer falls before contacting the spring. This is the distance from the equilibrium position when the drop weight just contacts the spring. Let be the amplitude of the falling weight's vibration, and g be the acceleration due to gravity. The acceleration of the falling hammer. For load, For the falling weight, For the acceleration of the falling hammer, The distance the hammer falls is the distance. The angular frequency of the falling hammer vibration. For spring stiffness, The initial velocity is the initial velocity of the falling hammer impact model.

[0019] Furthermore, a preferred embodiment is proposed, wherein the falling hammer impact device includes an adjustable mass falling hammer, a spring, and a height control mechanism, wherein the falling hammer is connected to the falling hammer height control mechanism via the spring, and wherein the falling hammer is approximately a single-degree-of-freedom spring oscillator when it is in free fall.

[0020] Furthermore, a preferred embodiment is proposed in which the peak value and pulse width of the triangular wave load are adjusted by controlling the mass of the falling hammer, the falling height, and the stiffness of the spring. The stiffness of the spring is fixed, and the load control is mainly achieved by adjusting the mass and height of the falling hammer.

[0021] Furthermore, a preferred approach is proposed, wherein the method further includes distortion processing of a portion of the structure of a scaled-down marine equipment test model.

[0022] Based on the same inventive concept, the present invention also proposes a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes a scaled-down test method for marine equipment surfacing and breaking ice in an impact environment based on equivalent impact load, according to any one of the above.

[0023] Based on the same inventive concept, the present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of a scaled-down test method for an icebreaking impact environment of marine equipment based on equivalent impact loads as described in any of the preceding claims.

[0024] Compared with the prior art, the beneficial effects of the present invention are: The experimental method proposed in this invention transforms complex icebreaking distributed loads into concentrated loads on the modules, and, based on the impact spectrum principle, converts them into equivalent triangular wave loads. This effectively solves the technical challenge of accurately applying loads in large-scale model tests, significantly improving the accuracy and reliability of experimental data. Furthermore, by employing a drop hammer impact device as the load application method, the peak load and pulse width can be precisely controlled by simply adjusting the drop hammer mass and drop height, significantly enhancing the operability and repeatability of the test, and reducing experimental costs and time consumption. The experimental method proposed in this invention, through scaled-down model design and distortion processing, not only meets the technological requirements but also overcomes the scale effect problem in traditional small-scale tests, enabling the experimental results to more realistically reflect the impact environment of marine equipment under icebreaking loads.

[0025] The technical principle of the experimental method proposed in this invention is fundamentally different from that of existing technologies: Firstly, in terms of load processing, existing technologies directly adopt physical simulation methods, such as applying the original load through a lifting device or mechanical loading. However, this invention innovatively applies the impact spectrum theory to the equivalent transformation of the load, converting the time-domain load data to the frequency domain for processing, and then transforming it into an easily achievable triangular wave load. This fundamental breakthrough solves the problem of complex loads being difficult to reproduce in model tests.

[0026] Secondly, in terms of load input, existing technologies mostly use acceleration as the input quantity of the impact spectrum, while this invention uses the load itself as the input quantity for impact spectrum conversion. Although the two differ by only a constant mass, this conversion makes spectral acceleration into spectral load and spectral velocity into spectral momentum, achieving a breakthrough in physics and providing a new technical path for accurate load equivalence.

[0027] Third, in terms of load application devices, existing technologies rely on complex specialized equipment, such as ice water pool lifting devices or multi-stage transmission loading systems. In contrast, this invention uses a simple drop hammer impact device, which utilizes the characteristics of its single-degree-of-freedom spring oscillator. Precise load control can be achieved through simple adjustment of mass and height parameters. This simplified design not only reduces equipment complexity but also improves the flexibility and repeatability of the experiment.

[0028] Finally, in terms of the overall methodological architecture, this invention organically integrates scale-down theory, impact spectrum conversion, and drop hammer loading to form a complete ice-breaking load test solution, breaking through the bottleneck of existing technologies being limited to small-scale models. Attached Figure Description

[0029] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of a scaled-down test method for the icebreaking impact environment of marine equipment based on equivalent impact load, as described in this invention. Figure 2 This is a concentrated ice load curve diagram for a certain section of the present invention; Figure 3 This is a schematic diagram of the triangular wave load described in this invention; Figure 4 This is a schematic diagram of the drop hammer structure described in this invention; In the picture: 1-Mass block, 2-Spring, 3-Limiter, 4-Groove track, 5-Hydraulic damper. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0031] Detailed Implementation Method 1: See Figures 1 to 4 This embodiment describes a scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load. The method includes: Based on similarity theory, a scaled-down design of marine equipment and icebreaking loads is carried out to obtain a scaled-down marine equipment test model. The icebreaking load is equivalently processed, including extracting the distributed load to form the concentrated load of the compartment, converting the time-domain load data into a frequency-domain impact spectrum based on the impact spectrum principle, and then converting the frequency-domain impact spectrum into a triangular wave load, wherein the triangular wave load has an adjustable peak value and pulse width. The triangular wave load is applied to a specific section of a scaled-down marine equipment test model using a drop hammer impact device. Impact response data of marine equipment are collected by accelerometers and strain gauges to analyze the transmission law of icebreaking load in marine equipment and the impact environment of critical equipment.

[0032] When conducting model tests, due to limitations in test facilities, it is necessary to use similarity theory to design scaled-down models to replace marine equipment for testing. Here, scaled-down refers to the scaling down of known model structures and ice loads.

[0033] The scaling design described in this embodiment is derived based on Buckingham's π theorem and dimensional analysis method to obtain the scaling relationship of physical quantities between the prototype and the model. Specifically: Given the model structure and icebreaking load data, for a specific section, the distributed loads at each location are extracted to form the section's concentrated load. Since scaled-down model tests are typically conducted, the similarity theory of collision problems is used to scale down the model structure and icebreaking load data. The scaled-down relationships derived based on Buckingham's π theorem and dimensional analysis are shown in Table 1. Table 1. Scale Relationship of Physical Quantities between Prototype and Model

[0034] For complex icebreaking loads, it is too difficult to apply them directly to the model. Therefore, it is necessary to perform equivalent processing on the ice loads. First, the distributed loads of the region are extracted to form the concentrated loads of the compartments, such as... Figure 2 As shown, since the research on the shock resistance of marine equipment mainly focuses on the maximum response at various locations, which is similar to the principle of shock spectrum, the time-domain load data is equivalent to the frequency-domain result based on the principle of shock spectrum, and finally it is transformed into an easily implemented triangular wave load, such as... Figure 3 As shown.

[0035] This implementation method, based on the principle of impact spectrum, converts time-domain load data into frequency-domain impact spectrum. It uses a concentrated load as input instead of acceleration, converting spectral acceleration into spectral load and spectral velocity into spectral momentum, which is then further converted into gravitational acceleration. The product of spectral shift and mass is converted into spectral energy.

[0036] In this implementation, the load instead of acceleration is used as input to convert into an impact spectrum. Since the two differ by only a constant mass, the theory of impact spectrum conversion is not affected. In the calculation results, the original spectral acceleration becomes spectral load, spectral velocity becomes spectral momentum, and the product of spectral displacement and mass has no specific meaning. Multiplying by a gravitational acceleration then becomes spectral energy.

[0037] In this embodiment, the frequency domain impulse spectrum is converted into a triangular wave load according to the following formula, including:

[0038]

[0039]

[0040] in, It is the peak load. It is a spectrum of impact loads. It is spectral momentum. It is a triangular wave period. This is the moment when the load reaches its peak.

[0041] After obtaining the peak load and pulse width of the triangular wave, a drop hammer impact device is used to apply it to the test model. In this embodiment, the drop hammer impact device includes an adjustable mass drop hammer, a spring, and a height control mechanism. The drop hammer is connected to the drop hammer height control mechanism via the spring, and the drop hammer approximates a single-degree-of-freedom spring oscillator during free fall.

[0042] Specifically, the drop hammer impact device, such as Figure 3 As shown, it includes a mass block 1, a spring 2, a limiter 3, a grooved track 4, and a hydraulic damper 5; The mass block 1 is a flat, disc-shaped structure, and its center is fixedly connected to the top of the hydraulic damper 5. It can move vertically along the inner wall of the groove track 4. The spring 2 is coaxially sleeved outside the hydraulic damper 5 and is separated and supported by the limiter 3. The upper and lower ends of the spring 2 are respectively subjected to the forces from the mass block 1 and the lower limiter 3. The limiter 3 is fixedly installed on the inner wall of the groove track 4 to support and separate the spring 2, while limiting the falling stroke of the mass block 1 and the hydraulic damper 5 connected thereto. The groove track 4 is a cylindrical outer shell structure with a guide structure on its inner wall.

[0043] In practical applications, the drop hammer impact device uses the hydraulic damper 5 as its central axis, with the mass block 1 fixed at its top. Multiple sets of springs 2 are sleeved around the damper and supported and positioned by limiters 3 fixed to the inner wall of the grooved track 4. The entire moving part (mass block, hydraulic damper, and some springs) moves vertically under the constraint of the grooved track 4, and its stroke is controlled by the limiters 3.

[0044] In the falling hammer impact device, the peak value and pulse width of the triangular wave load are adjusted by controlling the mass of the falling hammer, the falling height, and the stiffness of the spring. The stiffness of the spring is fixed, and the load control is mainly achieved by adjusting the mass and height of the falling hammer.

[0045] The peak value and pulse width of the triangular wave load are calculated according to the following formula:

[0046]

[0047]

[0048]

[0049]

[0050] in, The height the hammer falls before contacting the spring. This is the distance from the equilibrium position when the drop weight just contacts the spring. Let be the amplitude of the falling weight's vibration, and g be the acceleration due to gravity. The acceleration of the falling hammer. For load, For the falling weight, For the acceleration of the falling hammer, The distance the hammer falls is the distance. The angular frequency of the falling hammer vibration. For spring stiffness, The initial velocity is the initial velocity of the falling hammer impact model.

[0051] The known peak load and pulse width can be used to theoretically deduce the mass, height, and spring stiffness of the drop hammer.

[0052] Based on the above calculation results, the drop hammer height and mass are set and placed directly above the corresponding section of the marine equipment model. After everything is ready, the drop hammer is released to impact the test model. In this way, the icebreaking load is applied to each section of the model in segments. Finally, the transmission law of the icebreaking load in the marine equipment and the impact environment of the key equipment location are analyzed based on the data recorded by the acceleration sensor and strain gauge.

[0053] The method described in this embodiment also includes distortion processing of some structures of the scaled-down marine equipment test model. The method also includes simplification of the scaled-down model's structure based on the principle of equal moments of inertia, including averaging the thickness of the plate material of the marine equipment's pressure hull and bulkheads, reducing the total number of rib members by 1.5 times, but increasing the cross-section of each individual member by 1.5 times, and converting the T-shaped cross-section to a rectangular cross-section to facilitate model fabrication.

[0054] Based on the scaled-down marine equipment model, due to process requirements, some structures of the marine equipment need to be distorted to form a simplified test model.

[0055] In characterizing the impact environment of marine equipment, this embodiment uses the frequency domain impact spectrum instead of the time-history load curve, and performs a preliminary verification of the equipment's impact resistance characteristics based on the methods specified in the national military standard.

[0056] The technical principle of the experimental method proposed in this embodiment is fundamentally different from that of the prior art: Firstly, in terms of load processing, existing technologies directly adopt physical simulation methods, such as applying the original load through a lifting device or mechanical loading. However, this invention innovatively applies the impact spectrum theory to the equivalent transformation of the load, converting the time-domain load data to the frequency domain for processing, and then transforming it into an easily achievable triangular wave load. This fundamental breakthrough solves the problem of complex loads being difficult to reproduce in model tests.

[0057] Secondly, in terms of load input, existing technologies mostly use acceleration as the input quantity of the impact spectrum, while this invention uses the load itself as the input quantity for impact spectrum conversion. Although the two differ by only a constant mass, this conversion makes spectral acceleration into spectral load and spectral velocity into spectral momentum, achieving a breakthrough in physics and providing a new technical path for accurate load equivalence.

[0058] Third, in terms of load application devices, existing technologies rely on complex specialized equipment, such as ice water pool lifting devices or multi-stage transmission loading systems. In contrast, this invention uses a simple drop hammer impact device, which utilizes the characteristics of its single-degree-of-freedom spring oscillator. Precise load control can be achieved through simple adjustment of mass and height parameters. This simplified design not only reduces equipment complexity but also improves the flexibility and repeatability of the experiment.

[0059] Finally, in terms of the overall methodological architecture, this invention organically integrates scale-down theory, impact spectrum conversion, and drop hammer loading to form a complete ice-breaking load test solution, breaking through the bottleneck of existing technologies being limited to small-scale models.

[0060] Implementation Method 2: A computer device according to this implementation method includes a memory and a processor. The memory stores a computer program. When the processor runs the computer program stored in the memory, the processor executes a scaled-down test method for marine equipment surfacing and breaking ice in an impact environment based on equivalent impact load, as described in Implementation Method 1.

[0061] Implementation Method 3: A computer-readable storage medium described in this implementation method stores a computer program, which, when executed by a processor, performs the steps of a scaled-down test method for an icebreaking impact environment of marine equipment based on equivalent impact loads, as described in Implementation Method 1.

[0062] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit its protection scope. Although this disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this disclosure, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the published pending claims.

Claims

1. A scaled-down test method for the icebreaking impact environment of marine equipment based on equivalent impact load, characterized in that, The method includes: Based on similarity theory, a scaled-down design of marine equipment and icebreaking loads is carried out to obtain a scaled-down marine equipment test model. The icebreaking load is equivalently processed, including extracting the distributed load to form the concentrated load of the compartment, converting the time-domain load data into a frequency-domain impact spectrum based on the impact spectrum principle, and then converting the frequency-domain impact spectrum into a triangular wave load, wherein the triangular wave load has an adjustable peak value and pulse width. The triangular wave load is applied to a specific section of a scaled-down marine equipment test model using a drop hammer impact device. Impact response data of marine equipment are collected by accelerometers and strain gauges to analyze the transmission law of icebreaking load in marine equipment and the impact environment of critical equipment.

2. The scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 1, characterized in that, The scaled-down design is derived based on Buckingham's π theorem dimensional analysis method to obtain the scaled-down relationship of physical quantities between the prototype and the model.

3. The scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 1, characterized in that, When time-domain load data is equivalent to frequency-domain impact spectrum based on the principle of impact spectrum, concentrated load is used as input instead of acceleration, so that spectral acceleration is converted into spectral load, spectral velocity is converted into spectral momentum, and then the product of spectral displacement and mass is converted into spectral energy through gravitational acceleration.

4. The scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 1, characterized in that, The process of converting the frequency domain impulse spectrum into a triangular wave load includes: in, It is the peak load. It is a spectrum of impact loads. It is spectral momentum. It is a triangular wave period. This is the moment when the load reaches its peak.

5. The scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 1, characterized in that, The peak value and pulse width of the triangular wave load are determined by the following formula: in, The height the hammer falls before contacting the spring. This is the distance from the equilibrium position when the drop weight just contacts the spring. Let be the amplitude of the falling weight's vibration, and g be the acceleration due to gravity. The acceleration of the falling hammer. For load, For the falling weight, For the acceleration of the falling hammer, The distance the hammer falls is the distance. The angular frequency of the falling hammer vibration. For spring stiffness, The initial velocity is the initial velocity of the falling hammer impact model.

6. The scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 1, characterized in that, The drop hammer impact device includes an adjustable mass drop hammer, a spring, and a height control mechanism. The drop hammer is connected to the drop hammer height control mechanism via the spring. When the drop hammer is in free fall, it is approximately a single-degree-of-freedom spring oscillator.

7. A scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 6, characterized in that, In the falling hammer impact device, the peak value and pulse width of the triangular wave load are adjusted by controlling the mass of the falling hammer, the falling height, and the stiffness of the spring. The stiffness of the spring is fixed, and the load control is mainly achieved by adjusting the mass and height of the falling hammer.

8. A scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load as described in claim 6, characterized in that, The method also includes distortion processing of some structures of the scaled-down model.

9. A computer device, characterized in that: It includes a memory and a processor, wherein the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes a scaled-down test method for icebreaking impact environment of marine equipment based on equivalent impact load, according to any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of a scaled-down test method for an icebreaking impact environment of marine equipment based on equivalent impact loads, as described in any one of claims 1-8.

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