Method and system for determining whether interface separation has occurred at the interface of a pulsed high-field magnet
Patent Information
- Application Number
- CN202611102486.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-23
- Publication Date
- 2026-09-29
AI Technical Summary
分离后，相邻部件之间会产生局部碰撞，反复碰撞会严重损伤局部绝缘层，进而威胁线圈的稳定运行，甚至导致磁体报废
（1）本发明提供了一种可定量预判脉冲强磁场磁体界面分离风险的方法，从接触界面的动力学响应入手，通过建立磁体接触界面各磁体部件的模型，以计算对应磁体部件的等效弹性系数；并构建多自由度振动模型（将脉冲载荷下脉冲强磁场磁体的膨胀运动过程抽象成多自由度振动模型），基于计算的各磁体部件的等效弹性系数和多自由度振动模型计算在脉冲载荷下各磁体部件的位移响应以计算各磁体部件对当前接触界面的界面拉力，进而判断磁体接触界面是否有发生分离的风险。本发明的方法，基于接触界面动力学响应特性进行定量分析，能够准确评估磁体接触界面的分离风险，避免了传统依赖实验测试或经验估计的盲目性，提高了判断的准确性及实时性。
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Figure CN122839747A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of pulsed strong magnetic field technology, and more specifically, relates to a method and system for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet. Background Technology
[0002] When a pulsed magnetic field magnet is subjected to a pulsed load, and the loading time of the pulsed load is close to or less than the natural vibration period of the magnet's components (such as coils, armor, and insulation layers), the magnet is prone to significant vibration. Due to differences in material properties and geometry among the components, their natural vibration frequencies often differ. Under pulsed excitation, the asynchronous responses of the components lead to a tendency for separation at the contact interfaces between them.
[0003] When this separation tendency exceeds the force that the contact interface can originally withstand (such as the adhesive force between the epoxy resin and the coil armor after vacuum epoxy casting, or the pre-tightening force generated by the pre-tightening structure), the contact interface will separate. After separation, local collisions will occur between adjacent components. Repeated collisions will severely damage the local insulation layer, thereby threatening the stable operation of the coil and even causing the magnet to be scrapped.
[0004] Currently, the assessment of interface separation problems in pulsed strong magnetic field magnets mainly relies on experimental testing or empirical estimation. There is an urgent need for a method that can quantitatively predict the risk of interface separation. Summary of the Invention
[0005] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides a method and system for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet. The purpose is to provide a method that can quantitatively predict the risk of interface separation of a pulsed strong magnetic field magnet, so as to accurately assess the separation risk of the magnet contact interface.
[0006] To achieve the above objectives, the present invention provides a method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, comprising: For the magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load, models of the corresponding magnet components are established respectively; Based on the models of each magnet component, the equivalent elastic coefficients of the corresponding magnet components are calculated. A multi-degree-of-freedom vibration model of a pulsed strong magnetic field magnet under pulsed load is established. After inputting the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, the differential equation of the multi-degree-of-freedom vibration model is solved to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulsed load. The displacement response x is used to calculate the interfacial tension of each magnet component on the current contact interface, and the largest interfacial tension is selected as the minimum interfacial force required to keep the current contact interface from separating. Determine whether the minimum interface force is greater than the actual interface force that the current contact interface can provide. If so, determine that the current contact interface will separate; otherwise, determine that the current contact interface will not separate.
[0007] Furthermore, the magnetic components located on both sides of the current contact interface are a coil and an armor, respectively, and the models of the corresponding magnetic components are a coil model and an armor model, respectively. Correspondingly, based on the model of the magnet component, the equivalent elastic coefficient of the magnet component is calculated, including: Based on the model of the magnet component, the elastic modulus of the magnet component is calculated; wherein, when the model of the magnet component is the coil model, the elastic modulus is the equivalent elastic modulus of the coil in the circumferential direction, and when the model of the magnet component is the armor model, the elastic modulus is the true elastic modulus of the armor in the circumferential direction. The equivalent elastic coefficient of the magnet component is calculated using the elastic modulus.
[0008] Furthermore, the equivalent elastic coefficient of the magnet component is a corrected equivalent elastic coefficient, and the corrected equivalent elastic coefficient is calculated as follows:
[0009]
[0010]
[0011] in, This is the equivalent elastic coefficient of the corrected coil or armor; α Let be the stiffness correction factor based on the Lamé solution of the thick-walled cylinder; when When the equivalent elastic modulus of the corrected coil is... k eq To correct the equivalent elastic coefficient of the previous coil, a and b Let be the inner and outer radii of the coil, respectively; E be the equivalent elastic modulus of the coil in the circumferential direction; S be the cross-section of the coil; and R be the radius from the center of the coil cross-section to its central axis. When the effective elastic coefficient of the modified armor is used, k eq To correct the equivalent elastic coefficient of the previous armor, a and b Let E be the inner and outer radii of the armor, E be the true elastic modulus of the armor in the circumferential direction, S be the cross-section of the armor, and R be the radius from the center of the armor cross-section to its central axis.
[0012] Furthermore, the interfacial tension of each magnet component on the current contact interface is calculated as follows:
[0013] in, m For the mass of the coil or armor, Displacement response of coil or armor x The second derivative of .
[0014] Further, the equivalent elastic modulus of the coil in the circumferential direction is calculated, including: Finite element modal analysis is used to homogenize and equivalently process the coil in the coil model, and the equivalent elastic modulus of the coil in the circumferential direction after homogenization and equivalent processing is calculated and used as the equivalent elastic modulus of the coil in the circumferential direction.
[0015] Furthermore, the multi-degree-of-freedom vibration model is a two-degree-of-freedom spring-mass-damping model, wherein the spring stiffness in the two-degree-of-freedom spring-mass-damping model is the equivalent elastic coefficient of the coil and the equivalent elastic coefficient of the armor, respectively.
[0016] The present invention also provides an apparatus for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, for performing the method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet as described in any of the preceding claims, comprising: The model building module is used to build models of the corresponding magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load. The equivalent elastic coefficient calculation module is used to calculate the equivalent elastic coefficient of each magnet component based on the model of each magnet component. The displacement response calculation module is used to establish a multi-degree-of-freedom vibration model of a pulsed strong magnetic field magnet under pulsed load. After inputting the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, the differential equation of the multi-degree-of-freedom vibration model is solved to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulsed load. The minimum interface force calculation module is used to calculate the interface tension of each magnet component on the current contact interface using the displacement response x, and select the largest interface tension as the minimum interface force required to keep the current contact interface from separating. The judgment module is used to determine whether the minimum interface force is greater than the interface force that the current contact interface can actually provide. If so, it is determined that the current contact interface will separate; otherwise, it is determined that the current contact interface will not separate.
[0017] The present invention also provides a system for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, comprising a computer-readable storage medium and a processor; The computer-readable storage medium is used to store executable instructions; The processor is used to read executable instructions stored in the computer-readable storage medium and execute the method described above for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet.
[0018] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet as described in any of the preceding claims.
[0019] The present invention also provides a computer program product, including a computer program that, when the computer program is run on a computer, causes the computer to execute the method described in any of the above claims for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet.
[0020] In summary, the above-described technical solutions conceived in this invention can achieve the following beneficial effects: (1) This invention provides a method for quantitatively predicting the risk of separation at the interface of a magnet in a pulsed strong magnetic field. Starting with the dynamic response of the contact interface, it establishes models of each magnet component at the contact interface to calculate the equivalent elastic coefficients of the corresponding magnet components. A multi-degree-of-freedom vibration model is constructed (the expansion motion process of the magnet under pulsed strong magnetic field under pulsed load is abstracted into a multi-degree-of-freedom vibration model). Based on the calculated equivalent elastic coefficients of each magnet component and the multi-degree-of-freedom vibration model, the displacement response of each magnet component under pulsed load is calculated to determine the interfacial tension of each magnet component on the current contact interface, thereby determining whether there is a risk of separation at the magnet contact interface. The method of this invention, based on the dynamic response characteristics of the contact interface, can accurately assess the risk of separation at the magnet contact interface, avoiding the blindness of traditional methods that rely on experimental testing or empirical estimation, and improving the accuracy and real-time performance of the judgment.
[0021] (2) Furthermore, the present invention designs a modified method for calculating the equivalent elastic coefficient of a magnet component. By using a stiffness correction factor α based on the Lamé solution of a thick-walled cylinder to correct the original equivalent elastic coefficient, the correction factor strictly takes into account the non-uniform distribution of circumferential stress along the wall thickness, avoiding the underestimation of stiffness introduced by the thin-wall assumption to the coil and armor when calculating the original equivalent elastic coefficient, and significantly improving the calculation accuracy of the equivalent radial stiffness (equivalent elastic coefficient).
[0022] (3) Furthermore, by accurately calculating the circumferential equivalent elastic coefficients of the coil and the armor, the motion process of circumferential expansion is abstracted into a two-degree-of-freedom vibration model, which can transform the time-consuming finite element transient calculation process into a fast program calculation that maintains high accuracy, greatly improving the speed of troubleshooting interface separation problems in magnet design.
[0023] In general, in response to the problem of interface separation tendency of various components of a magnet under pulsed load due to differences in inherent vibration frequencies, the method of the present invention can quickly and accurately determine whether interface separation will occur at the interface of a pulsed high magnetic field magnet during pulsed operation. It can effectively guide the magnet structure design and process optimization, avoid insulation layer damage caused by interface separation, and significantly improve the operational reliability and lifespan of the pulsed high magnetic field magnet. Attached Figure Description
[0024] Figure 1 This is a flowchart illustrating the method for determining magnet interface separation in an embodiment of the present invention.
[0025] Figure 2 This refers to the magnet model and component equivalent model used for simulation in the embodiments of the present invention.
[0026] Figure 3 This is a two-degree-of-freedom vibration model established in the embodiments of the present invention.
[0027] Figure 4 This is a simulation diagram of the radial displacement of the coil and the armor and the change of interface tension in an embodiment of the present invention. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.
[0029] Example 1 like Figure 1 As shown, this embodiment of the invention provides a method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, comprising the following steps: Step 1: For the magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load, establish models of the corresponding magnet components. In this embodiment of the invention, taking the coil and armor located above and below the contact interface as examples, simulation models of the coil and armor are established respectively.
[0030] Step 2: Based on the model of the magnet component, calculate the equivalent or true elastic modulus of the magnet components on both sides of the current contact interface, and then calculate the equivalent elastic coefficient of the corresponding magnet component. In this embodiment of the invention, for the established coil model, finite element modal analysis is used to homogenize and equivalently process the coil in the coil model, and the equivalent elastic modulus of the homogenized and equivalently processed coil in the circumferential direction is calculated; for the armor, based on the armor model, its true elastic modulus is directly calculated.
[0031] After calculating the equivalent elastic modulus of the coil and the true elastic modulus of the armor using the existing finite element homogenization process, the equivalent elastic coefficients of the coil or armor are calculated using the following formula. k eq .
[0032] ; Where E is the equivalent elastic modulus of the coil, or the true elastic modulus of the armor; S represents the cross-section of the coil or armor, and R represents the radius from the center of the coil or armor cross-section to its central axis.
[0033] Considering that the derivation of this formula is based on a thin-walled ring, and that the actual coil and armor cross-section have a certain thickness, errors due to wall thickness will occur if no correction is made. In this embodiment of the invention, a stiffness correction factor for the Lamé solution of a thick-walled cylinder is introduced. α The equivalent elastic coefficient calculated using the above equation k eq The correction is performed as shown in the following formula: ; ; in, k1 is the equivalent elastic coefficient of the corrected coil, or k2 is the equivalent elastic coefficient of the corrected armor. a and b These are the inner and outer radii of the coil (or armor), respectively.
[0034] By employing a stiffness correction factor α based on the Lamé solution for thick-walled cylinders, the calculation accuracy of the equivalent radial stiffness is significantly improved. This correction factor rigorously accounts for the non-uniform distribution of circumferential stress along the wall thickness, avoiding the underestimation of stiffness introduced by the thin-wall assumption for components with larger wall thicknesses.
[0035] Step 3: Establish a multi-degree-of-freedom vibration model of the magnet under pulse load, input the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, and solve the differential equation of the multi-degree-of-freedom vibration model to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulse load.
[0036] In this embodiment of the invention, the multi-degree-of-freedom vibration model adopts a two-degree-of-freedom spring-mass-damped system, where the spring stiffness in the two-degree-of-freedom spring-mass-damped system is the equivalent elastic coefficient. By solving the differential equation, the displacement response of each magnet component under pulse load can be obtained. Before the contact interface separates, the displacement response of each magnet component is the same. Since this embodiment of the invention only determines whether the contact interface separates, only the case before separation is considered.
[0037] In this embodiment of the invention, the displacement response is the radial displacement response of the magnet coil and the armor.
[0038] Step 4: Calculate the interfacial tension of the magnet components on the current contact interface using the displacement response, and select the one with the largest interfacial tension as the minimum interfacial force required to keep the interface from separating.
[0039] In this embodiment of the invention, the displacement response of the coil and the armor under pulse load is obtained. x Then, the interfacial pull of the coil or armor on the bonding surface (contact interface) is calculated using the following formula: ; in, m The mass of the coil (or armor), Displacement response x The second derivative of the equation. The maximum interfacial tension between the coil and the armor at the contact interface is chosen as the minimum interfacial force required to maintain the interface from separation.
[0040] Step 5: Compare the minimum interfacial force obtained in Step 4 with the actual interfacial bonding force or preload of the current contact interface. If the required minimum interfacial force is greater than the actual available interfacial force, it is determined that the current contact interface will separate; otherwise, it is determined that it will not separate.
[0041] This embodiment uses the interface between the coil of a pulsed high magnetic field magnet and the armor surrounding the coil as an example to illustrate the implementation process of the method of the present invention. In other embodiments, other magnetic components may be selected for the contact interface, but there is a risk of interface separation.
[0042] Step 1: For the magnetic components (coil and armor) at the contact interface between the coil of the pulsed strong magnetic field magnet and the armor surrounding the coil, establish magnetic models separately, such as... Figure 2 As shown, the conductor part of the magnet is a chromium-zirconium copper conductor with 8 radial turns and 8 axial turns. The size of a single-turn conductor is 15 mm × 15 mm, with a 2 mm radius rounded corner and a 7 mm diameter water cooling channel. The spacing between the conductors is 6 mm. The coil is formed by vacuum epoxy casting. The inner radius of the coil is 460 mm. The outer diameter contacts a stainless steel armor. The radial thickness of the armor is 60 mm and the axial thickness is 208 mm. The contact interface between the coil and the armor is a G10 epoxy insulation layer.
[0043] Step Two: Homogenize and equivalence the coil in the coil magnet model established in Step One, and calculate the equivalent elastic modulus E of the coil in the circumferential direction. After equivalence treatment of the coil as a solid component, its equivalent elastic modulus E in the circumferential direction is 33.37 GPa, and the circumferential modulus of the stainless steel armor is 200 GPa (true elastic modulus). Using the equivalent elastic modulus of the coil in the circumferential direction and the true elastic modulus of the armor, calculate their respective equivalent elastic coefficients. The equivalent elastic coefficient of the coil is then calculated. k 1 is 1.35 × 10 10 N / m, the armor's equivalent elastic modulus is k 2 is 2.31 × 10 10 N / m.
[0044] Step 3: Establish a two-degree-of-freedom vibration model, using the equivalent elastic coefficient as the elastic stiffness in the model. Solve the differential equations of the two-degree-of-freedom vibration model to obtain the displacement response of each magnet component under pulse load. For example... Figure 3 As shown, the coil and the armor are simplified into a simulated coil and a simulated armor with concentrated mass, respectively. They are connected to the fixed wall through equivalent elastic coefficients k1 and k2. Before the adhesive fails, the two are tightly connected by an epoxy adhesive layer. The interface can transmit pressure and tension and ensure that the radial displacement of the two objects is equal.
[0045] Step 4: Calculate the interfacial tension on the current contact interface using the displacement response, and select the one with the largest interfacial tension as the minimum interfacial force required to maintain the interface from separation. In this embodiment of the invention, the external load is set to a sine wave with a peak value of 100 kN and a frequency of 250 Hz, with an application time of one-quarter of the rising edge of the cycle, i.e., 1 ms. At this time, the radial displacement of the coil and the armor and the interfacial tension are as follows. Figure 4 As shown, the maximum tensile force at the interface is 20.5 kN, which is the minimum interfacial force required to keep the interface from separating.
[0046] Step 5: Compare the minimum interfacial force obtained in Step 4 with the actual interfacial adhesive force. If the required minimum interfacial force is greater than the actual available interfacial force, the interface is determined to separate; otherwise, it is determined not to separate. Generally, the tensile strength of the bond between epoxy and stainless steel is 10~25 MPa. Taking the minimum value of 10 MPa, in this example, the area of the bonding interface between the coil and the stainless steel armor is 0.765 m². 2 If the tensile adhesive force that it can withstand is 7650 kN, which is much greater than the maximum tensile force at the interface, then it is determined that there is no separation at the interface.
[0047] Example 2 This invention provides an apparatus for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, characterized in that it is used to perform the method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet in Embodiment 1, comprising: The model building module is used to build models of the corresponding magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load. The equivalent elastic coefficient calculation module is used to calculate the equivalent elastic coefficient of each magnet component based on the model of each magnet component. The displacement response calculation module is used to establish a multi-degree-of-freedom vibration model of a pulsed strong magnetic field magnet under pulsed load. After inputting the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, the differential equation of the multi-degree-of-freedom vibration model is solved to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulsed load. The minimum interface force calculation module is used to calculate the interface tension of each magnet component on the current contact interface using the displacement response x, and select the maximum interface tension as the minimum interface force required to keep the current contact interface from separating. The judgment module is used to determine whether the minimum interface force is greater than the actual interface force that the current contact interface can provide. If so, it is determined that the current contact interface will separate; otherwise, it is determined that the current contact interface will not separate.
[0048] For the specific implementation of each module, please refer to the relevant steps in Embodiment 1 above, which will not be repeated here.
[0049] Example 3 This invention provides a system for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet described in Embodiment 1 above.
[0050] The relevant technical solutions are the same as above, and will not be repeated here.
[0051] Example 4 This invention provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet in Embodiment 1.
[0052] Specifically, the memory may include high-speed random access memory, as well as non-volatile memory, such as hard disks, RAM, plug-in hard disks, smart media cards (SMC), secure digital (SD) cards, flash cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.
[0053] The relevant technical solutions are the same as above, and will not be repeated here.
[0054] Example 5 This invention provides a computer program product, including a computer program that, when run on a computer, causes the computer to execute the steps of the method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet in Embodiment 1.
[0055] The relevant technical solutions are the same as above, and will not be repeated here.
[0056] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, characterized in that, include: For the magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load, models of the corresponding magnet components are established respectively; Based on the models of each magnet component, the equivalent elastic coefficients of the corresponding magnet components are calculated. A multi-degree-of-freedom vibration model of a pulsed strong magnetic field magnet under pulsed load is established. After inputting the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, the differential equation of the multi-degree-of-freedom vibration model is solved to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulsed load. The displacement response x is used to calculate the interfacial tension of each magnet component on the current contact interface, and the largest interfacial tension is selected as the minimum interfacial force required to keep the current contact interface from separating. Determine whether the minimum interface force is greater than the actual interface force that the current contact interface can provide. If so, determine that the current contact interface will separate; otherwise, determine that the current contact interface will not separate.
2. The method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet according to claim 1, characterized in that, The magnetic components located on both sides of the current contact interface are a coil and an armor, respectively, and the models of the corresponding magnetic components are a coil model and an armor model, respectively. Correspondingly, based on the model of the magnet component, the equivalent elastic coefficient of the magnet component is calculated, including: Based on the model of the magnet component, the elastic modulus of the magnet component is calculated; wherein, when the model of the magnet component is the coil model, the elastic modulus is the equivalent elastic modulus of the coil in the circumferential direction, and when the model of the magnet component is the armor model, the elastic modulus is the true elastic modulus of the armor in the circumferential direction. The equivalent elastic coefficient of the magnet component is calculated using the elastic modulus.
3. The method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet according to claim 2, characterized in that, The equivalent elastic coefficient of the magnet component is a corrected equivalent elastic coefficient, and the corrected equivalent elastic coefficient is calculated as follows: in, This is the equivalent elastic coefficient of the corrected coil or armor; α Let be the stiffness correction factor based on the Lamé solution of the thick-walled cylinder; when When the equivalent elastic modulus of the corrected coil is... k eq To correct the equivalent elastic coefficient of the previous coil, a and b Let be the inner and outer radii of the coil, respectively; E be the equivalent elastic modulus of the coil in the circumferential direction; S be the cross-section of the coil; and R be the radius from the center of the coil cross-section to its central axis. When the effective elastic coefficient of the modified armor is used, k eq To correct the equivalent elastic coefficient of the previous armor, a and b Let E be the inner and outer radii of the armor, E be the true elastic modulus of the armor in the circumferential direction, S be the cross-section of the armor, and R be the radius from the center of the armor cross-section to its central axis.
4. The method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet according to claim 3, characterized in that, The calculation method for the interfacial tension of each magnet component on the current contact interface is as follows: in, m For the mass of the coil or armor, Displacement response of coil or armor x The second derivative of .
5. The method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet according to any one of claims 2-4, characterized in that, Calculate the equivalent elastic modulus of the coil in the circumferential direction, including: Finite element modal analysis is used to homogenize and equivalently process the coil in the coil model, and the equivalent elastic modulus of the coil in the circumferential direction after homogenization and equivalent processing is calculated and used as the equivalent elastic modulus of the coil in the circumferential direction.
6. The method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet according to claim 5, characterized in that, The multi-degree-of-freedom vibration model is a two-degree-of-freedom spring-mass-damping model. The spring stiffness in the two-degree-of-freedom spring-mass-damping model is the equivalent elastic coefficient of the coil and the equivalent elastic coefficient of the armor, respectively.
7. A device for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet, characterized in that, A method for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet, as described in any one of claims 1-6, comprising: The model building module is used to build models of the corresponding magnet components on both sides of the current contact interface of the pulsed strong magnetic field magnet under pulsed load. The equivalent elastic coefficient calculation module is used to calculate the equivalent elastic coefficient of each magnet component based on the model of each magnet component. The displacement response calculation module is used to establish a multi-degree-of-freedom vibration model of a pulsed strong magnetic field magnet under pulsed load. After inputting the equivalent elastic coefficients of each magnet component into the multi-degree-of-freedom vibration model, the differential equation of the multi-degree-of-freedom vibration model is solved to obtain the displacement response x of the magnet components on both sides of the current contact interface under pulsed load. The minimum interface force calculation module is used to calculate the interface tension of each magnet component on the current contact interface using the displacement response x, and select the largest interface tension as the minimum interface force required to keep the current contact interface from separating. The judgment module is used to determine whether the minimum interface force is greater than the interface force that the current contact interface can actually provide. If so, it is determined that the current contact interface will separate; otherwise, it is determined that the current contact interface will not separate.
8. A system for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet, characterized in that, Includes computer-readable storage media and processors; The computer-readable storage medium is used to store executable instructions; The processor is used to read executable instructions stored in the computer-readable storage medium and execute the method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet as described in any one of claims 1-6.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method for determining whether interface separation occurs at the interface of a pulsed strong magnetic field magnet as described in any one of claims 1-6.
10. A computer program product, characterized in that, The method includes a computer program that, when run on a computer, causes the computer to perform the method according to any one of claims 1-6 for determining whether interface separation has occurred at the interface of a pulsed strong magnetic field magnet.