A method for regulating the shearing loading stiffness of a device based on series elastic blocks

Abstract

This application relates to a method for controlling the shear loading stiffness of equipment based on series-connected elastic blocks. The method includes: determining a target shear loading stiffness; determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness; determining the available installation space for the elastic blocks and using that space to determine the size range of the elastic blocks; selecting candidate elastic block materials based on the determined size range and the elastic block stiffness; calculating the compressive modulus of each material in the candidate elastic block materials and calculating the final size of the elastic blocks based on the compressive modulus. By flexibly adjusting the geometric dimensions of the elastic blocks within a limited space according to the compressive modulus of the candidate materials, the target stiffness can be matched as accurately as possible while meeting strength requirements; and by connecting the equipment and the elastic blocks in series, precise and controllable adjustment of the equipment's shear loading stiffness is achieved.

Description

Technical Field

[0001] This application relates to the field of equipment stiffness control technology, specifically to a method for controlling the shear loading stiffness of equipment based on a series of elastic blocks. Background Technology

[0002] Fault frictional sliding behavior is influenced by various factors, among which the stiffness of the fault and its surrounding rock mass plays a crucial role in the fault frictional mechanical behavior pattern. Fault frictional stability is related to the shear loading stiffness k of the surrounding rock and the critical stiffness k of the fault. c The relative relationship is closely related; specifically, when k <k c When k > k, the fault surface tends to undergo unstable stick-slip; c At this time, the fault plane tends to exhibit stable sliding.

[0003] In indoor test scenarios, shear loading stiffness directly affects the energy release and feedback process between the loading system and the fault interface. Controlling the shear loading stiffness of the test equipment to achieve controllable simulation of the fault tribomechanical behavior is a key technical means to carry out research on the characteristics of fault sliding behavior and deep mechanical mechanisms. Its core principle is to use the equipment loading mode to equivalently simulate the plate motion process in actual working conditions.

[0004] In related technologies, the control of shear loading stiffness of test equipment is usually achieved using disc springs, and some studies have also introduced cylindrical helical springs for normal stiffness control. However, cylindrical helical springs are difficult to simultaneously meet stiffness and strength requirements under space-constrained conditions, while the stiffness control of disc springs is nonlinear, and the stacking of multiple disc springs is prone to inter-leaf friction, guide misalignment, and stress concentration, which can lead to fatigue damage and loading instability. Summary of the Invention

[0005] This application provides a method for controlling the shear loading stiffness of a device based on a series of elastic blocks. This method can solve the technical problems in the related art, such as the difficulty for cylindrical helical springs to simultaneously meet the stiffness and strength requirements under space-constrained conditions, the nonlinearity of the stiffness control of disc springs, and the tendency of multiple disc springs to be stacked to generate inter-leaf friction, guide offset and stress concentration, which in turn leads to fatigue damage and loading instability.

[0006] In a first aspect, embodiments of this application provide a method for controlling the shear loading stiffness of a device based on series elastic blocks. The method includes: determining a target shear loading stiffness; determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness; determining the available installation space for the elastic blocks and using the available installation space to determine the size range of the elastic blocks; selecting candidate elastic block materials based on the determined size range and the stiffness of the elastic blocks; calculating the compressive modulus of each material in the candidate elastic block materials and calculating the final size of the elastic blocks based on the compressive modulus.

[0007] In conjunction with the first aspect, in one embodiment, determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness includes: obtaining the equipment shear loading stiffness when the elastic blocks are not installed; and calculating the stiffness of the elastic blocks to be connected in series using the equipment shear loading stiffness and the target shear loading stiffness, combined with the series stiffness formula.

[0008] In conjunction with the first aspect, in one embodiment, determining the size range of the elastic block using the available installation space includes: measuring the distance between the tangential loading end and the lower shear box in the initial installation state, and using this distance as the maximum length of the elastic block; and determining the maximum diameter of the elastic block in conjunction with the installation position and the dimensions of the surrounding structural components.

[0009] In conjunction with the first aspect, in one embodiment, before measuring the distance between the tangential loading end and the lower shear box in the initial installation state, the method further includes: installing the sample in the upper shear box and the lower shear box respectively, and adjusting the position of the lower shear box while the position of the upper shear box is fixed, so as to form a preset initial installation state of the sample.

[0010] In conjunction with the first aspect, in one embodiment, the step of selecting candidate elastic block materials based on a determined size range and elastic block stiffness includes: calculating the elastic modulus selection range of candidate elastic block materials using the size range and elastic block stiffness; and selecting materials whose elastic modulus falls within the selection range as candidate elastic block materials.

[0011] In conjunction with the first aspect, in one embodiment, calculating the compressive modulus of each material in the candidate elastic block material includes: performing a compression test using standard blocks of the candidate elastic block material to calculate the compressive modulus of each candidate elastic block material.

[0012] In conjunction with the first aspect, in one embodiment, the compression test using standard blocks of candidate elastic block material includes: setting multiple monitoring points at fixed intervals along the axial direction of each standard block; at each monitoring point, arranging multiple axial strain gauges in different orientations along the circumference of the standard block; the multiple axial strain gauges are spaced apart from each other, and the axial direction of each strain gauge is consistent with the axial direction of the standard block; using a displacement control mode, axial compression loading is applied to each standard block at a constant control rate; when the compression load reaches the preset maximum load, loading is stopped and unloaded.

[0013] In conjunction with the first aspect, in one embodiment, the compression test using standard blocks of candidate elastic block materials further includes: selecting one standard block for each candidate elastic block material; subjecting each standard block to multiple rounds of repeated loading cycle tests, and recording the load-deformation relationship of each standard block in the multiple rounds of repeated loading tests.

[0014] In conjunction with the first aspect, in one embodiment, the step of calculating the final size of the elastic block based on the compression modulus after recording the load-deformation relationship of each standard block in multiple rounds of repeated loading tests includes: selecting a standard block whose load-deformation curve shows a linear response during multiple rounds of loading cycles, and whose slope deviation of each round of curves is within a preset threshold as the final selected elastic block material.

[0015] In conjunction with the first aspect, in one embodiment, after selecting a standard block whose load-deformation curve exhibits a linear response during multiple loading cycles and whose slope deviation of each cycle curve is within a preset threshold as the final selected elastic block material, the method includes: calculating the final size of the elastic block based on the compressive modulus of the final selected elastic block material and the stiffness of the elastic blocks to be connected in series.

[0016] The beneficial effects of the technical solutions provided in this application include: By determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness, and then determining the size range of the elastic blocks based on the available installation space, and after selecting candidate elastic block materials, the final size of the elastic blocks is calculated using the compressive modulus of each candidate elastic block material. That is, within a limited space, the geometric dimensions of the elastic blocks can be flexibly adjusted according to the compressive modulus of the candidate materials, matching the target stiffness as accurately as possible while meeting strength requirements. Furthermore, by connecting the equipment and the elastic blocks in series, precise and controllable adjustment of the shear loading stiffness of the equipment is achieved. At the same time, each elastic block is an integrated structure, which structurally eliminates the causes of inter-piece friction and guide offset that are easily generated by the stacking of multiple pieces, greatly reducing the probability of stress concentration. This solves the technical problems in related technologies, such as the difficulty of simultaneously meeting the stiffness and strength requirements of cylindrical helical springs under space-constrained conditions, and the problem that the stacking of multiple disc springs easily leads to fatigue damage and loading instability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of an embodiment of the device shear loading stiffness control method based on series elastic blocks provided in this application; Figure 2 This is a schematic diagram of another embodiment of the device shear loading stiffness control method based on series elastic blocks provided in this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0020] This application provides a method for controlling the shear loading stiffness of a device based on a series of elastic blocks. It can solve the technical problems in the related art where cylindrical helical springs are difficult to meet the stiffness and strength requirements at the same time under space-constrained conditions, while the stiffness control of butterfly springs is nonlinear, and the superposition of multiple butterfly springs is prone to inter-leaf friction, guide offset and stress concentration, which in turn leads to fatigue damage and loading instability.

[0021] See Figure 1 The image shows a method for controlling the shear loading stiffness of a device based on a series of elastic blocks, provided in an embodiment of this application. The method for controlling the shear loading stiffness of a device may include: S1: Determine the target shear loading stiffness. It should be understood that the target shear loading stiffness can be determined based on the critical fault stiffness of the specimen to be loaded. Specifically, the range of values ​​for the target shear loading stiffness can be determined by combining the expected frictional sliding mode in the experiment, and one or more representative stiffness values ​​can be selected as the target shear loading stiffness. This step clarifies the target shear loading stiffness during the experimental design phase, giving the subsequent stiffness control process a clear direction and facilitating the controllable simulation of fault tribomechanical behavior.

[0022] S2: Determine the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness; that is, the equipment body and the elastic blocks to be connected in series can be regarded as a series spring system, and the stiffness of the elastic blocks to be connected in series can be calculated based on the equivalent stiffness relationship of the series system.

[0023] S3: Determine the available installation space for the elastic block, and use the available installation space to determine the size range of the elastic block; by determining the available installation space for the elastic block and constraining the size range of the elastic block, it can be ensured that the elastic block can be smoothly installed and work normally in the test equipment.

[0024] S4: Select candidate elastic block materials based on the determined size range and elastic block stiffness; it should be understood that candidate elastic block materials can be selected based on the elastic modulus of the material, that is, materials with elastic modulus within the calculation range are selected as candidate elastic block materials, and the materials at this time can include multiple types.

[0025] S5: Calculate the compressive modulus of each material in the candidate elastic block material, and calculate the final dimensions of the elastic block based on the compressive modulus. It should be understood that there may be a certain difference between the elastic modulus and the compressive modulus of each candidate elastic block material. By determining the actual compressive modulus of each candidate elastic block material through targeted mechanical tests, and using it to replace the elastic modulus for dimension calculation, it is possible to ensure that the stiffness of the elastic block is as accurately matched as possible with the target shear loading stiffness.

[0026] This application embodiment determines the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness, then determines the size range of the elastic blocks based on the available installation space, and calculates the final size of the elastic blocks by using the compressive modulus of each candidate elastic block material after selecting candidate elastic block materials. That is, within a limited space, the geometric dimensions of the elastic blocks can be flexibly adjusted according to the compressive modulus of the candidate materials to match the target stiffness as accurately as possible while meeting the strength requirements. Furthermore, by connecting the equipment and the elastic blocks in series, the shear loading stiffness of the equipment can be precisely and controllably adjusted. At the same time, each elastic block is an integrated structure, which eliminates the causes of inter-piece friction and guide offset that are easily generated by the stacking of multiple pieces, greatly reducing the probability of stress concentration. This solves the technical problems in related technologies, such as the difficulty for cylindrical helical springs to simultaneously meet the stiffness and strength requirements under space-constrained conditions, and the problem that the stacking of multiple disc springs can easily lead to fatigue damage and loading instability.

[0027] In some optional embodiments, determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness may include: obtaining the equipment shear loading stiffness without the elastic blocks installed; and calculating the stiffness of the elastic blocks to be connected in series using the equipment shear loading stiffness and the target shear loading stiffness, combined with the series stiffness formula. It should be understood that obtaining the equipment shear loading stiffness without the elastic blocks installed can be achieved by using an indirect testing method, calculating the equipment shear loading stiffness under simulated rock fault friction test conditions. See also... Figure 2 As shown, in some optional embodiments, determining the size range of the elastic block using the available installation space may include: S31: Measure the distance between the tangential loading end and the lower shear box in the initial installation state, and take this distance as the maximum length of the elastic block; that is, to ensure that the elastic block can be smoothly installed and work normally in the test equipment, the external dimensions of the elastic block can be determined according to the available installation space between the tangential loading end and the lower shear box. Specifically, the maximum available distance between the tangential loading end and the lower shear box can be measured in the initial installation state of the equipment.

[0028] S32: Determine the maximum diameter of the elastic block by considering the installation location and the dimensions of surrounding structural components. In other words, the usable range of the maximum diameter of the elastic block can be determined by combining the installation location and the dimensions of surrounding structural components. This step establishes geometric constraints on the length and diameter of the elastic block, preventing situations where the designed elastic block has suitable stiffness but cannot be installed or affects the normal operation of the equipment, thus ensuring the engineering feasibility of the control scheme.

[0029] Preferably, before measuring the distance between the tangential loading end and the lower shear box in the initial installation state, the method further includes: installing the sample in the upper and lower shear boxes respectively; and adjusting the position of the lower shear box while the position of the upper shear box is fixed to form a preset initial installation state for the sample. In this embodiment, by placing the sample in the lower shear box and adjusting the lower shear box based on the position of the upper shear box, a reference can be provided for the placement position of the lower shear box, ensuring that the sample is in a centered clamping state between the upper and lower shear boxes.

[0030] In some optional embodiments, selecting candidate elastic block materials based on a determined size range and elastic block stiffness may include: calculating the elastic modulus selection range of candidate elastic block materials using the size range and elastic block stiffness; selecting materials with elastic modulus within the selection range as candidate elastic block materials. According to the formula... In this formula, k represents the stiffness of the elastic block, L represents the length of the elastic block, and A represents the cross-sectional area of ​​the elastic block. When using this formula to calculate the selection range of the elastic block material, L represents the distance between the tangential loading end and the lower shear box in the initial installation state, and A represents the cross-sectional area of ​​the elastic block that can be installed at the tangential loading end. Therefore, given the length L of the installation space, the cross-sectional area A, and the target stiffness k of the elastic block... t Under the premise of this, the appropriate range of the elastic modulus of the material can be determined by formula derivation, and then the material that meets the elastic modulus requirements can be accurately selected as the candidate elastic block material.

[0031] In some optional embodiments, calculating the compressive modulus of each material in the candidate elastic block material may include: conducting compression tests using standard blocks of the candidate elastic block material and calculating the compressive modulus of each candidate elastic block material. In this embodiment, compression tests are conducted using standard blocks of each candidate elastic block material. In some other embodiments, cylindrical specimen blocks may be prepared under the premise of meeting the space constraints for installing the testing equipment for the compression test.

[0032] In some optional embodiments, the compression test using standard blocks of candidate elastic block material may include: setting multiple monitoring points at fixed intervals along the axial direction of each standard block; at each monitoring point, arranging multiple axial strain gauges in different orientations along the circumference of the standard block, with the multiple axial strain gauges spaced apart and the axial direction of each strain gauge aligned with the axial direction of the standard block; employing a displacement control mode, axial compression loading is applied to each standard block at a constant control rate, and loading is stopped and unloaded when the compression load reaches a preset maximum load. That is, each standard block undergoes a compression test separately. During the compression test, strain gauges are arranged in an array along the axial direction of the standard block, with the sensitive grid direction of all strain gauges aligned with the axial direction of the standard block. Several monitoring points are set at fixed intervals along the axial direction of the standard block, and at each monitoring point, multiple axial strain gauges are arranged in different orientations along the circumference of the standard block, with the multiple axial strain gauges spaced apart. In this embodiment, when a cylindrical standard block is placed on a compression test device, multiple strain gauges are arranged at a preset angle (e.g., 90 degrees) along the circumference of each monitoring point to obtain the axial strain distribution of the sample during loading. Multi-point strain measurement can more accurately reflect the average deformation characteristics of the standard block. Regarding the test scheme, a displacement control mode is preferred, where the standard block is subjected to axial compression loading at a constant displacement control rate; loading is stopped and unloaded when the compression load reaches the preset maximum load.

[0033] In some optional embodiments, the compression test using standard blocks of candidate elastic block materials may further include: selecting one standard block for each candidate elastic block material; subjecting each standard block to multiple rounds of repeated loading cycle tests, and recording the load-deformation relationship of each standard block in the multiple rounds of repeated loading tests. That is, multiple repeated loading cycle tests are performed on the same standard block, and in each loading test, the load-deformation relationship of each cycle is recorded and compared to determine the linearity and loading stability of each standard block within the target deformation range.

[0034] In some optional embodiments, the calculation of the final size of the elastic block based on the compression modulus, after recording the load-deformation relationship of each standard block in multiple rounds of repeated loading tests, may include: selecting a standard block whose load-deformation curve exhibits a linear response during multiple loading cycles, and whose slope deviation of each cycle's curve is within a preset threshold, as the final selected elastic block material. In this embodiment, a standard block whose load-deformation curve maintains an approximately linear shape in each cycle, whose slope deviation of each cycle's curve is controlled within a preset threshold, and whose slope fluctuation amplitude is as small as possible, can be selected. This indicates that the standard block has strong linear stiffness consistency and good loading stability, and the material of this standard block can be selected as the final material of the elastic block. Furthermore, through compression tests, the actual stiffness of each standard block can be obtained based on the slope of the load-deformation curve, and a lateral comparison can be made between standard blocks of different materials and sizes, thereby selecting an elastic block design scheme that meets the target stiffness requirements and has good linearity and stability.

[0035] In some optional embodiments, after selecting a standard block as the final selected elastic block material whose load-deformation curve exhibits a linear response during multiple loading cycles and whose slope deviation of each cycle's curve is within a preset threshold, the process includes: calculating the final dimensions of the elastic block based on the compressive modulus of the final selected elastic block material and the stiffness of the elastic blocks to be connected in series. It should be understood that this calculation process can also be based on a formula... Therefore, the compressive modulus E of the elastic block is obtained. c Given that the actual stiffness k of the elastic block is... a This can also be determined through compression tests, which allows for the calculation of the actual length L of the elastic block. a and diameter A a The matching relationship is determined by adjusting the diameter and length of the elastic block to make the actual stiffness of the elastic block close to the calculated stiffness of the elastic block to be connected in series, while meeting the installation space constraints and material strength requirements. This determines the final size of the elastic block to be connected in series. Preferably, the contact area of ​​the elastic block should be as large as possible, but smaller than the maximum diameter, so as to make the contact more stable.

[0036] In this embodiment, the aforementioned determined elastic block is installed between the tangential loading end and the lower shear box, so that the elastic block and the device body form a series connection in the shear loading direction. Through the method provided in this embodiment, the shear loading stiffness of the test equipment can be precisely controlled in a space-constrained test environment by designing and calibrating the series elastic block, thereby providing reliable test conditions for comparative studies of different shear loading stiffness conditions in simulated fault friction tests.

[0037] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling the shear loading stiffness of a device based on a series of elastic blocks, characterized in that, The method for adjusting the shear loading stiffness of the equipment includes: Determine the target shear loading stiffness; Determine the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness; Determine the available installation space for the elastic block, and use the available installation space to determine the size range of the elastic block; Candidate elastic block materials are selected based on the determined size range and the stiffness of the elastic block; Calculate the compressive modulus of each material in the candidate elastic block material, and calculate the final size of the elastic block based on the compressive modulus.

2. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 1, characterized in that, The process of determining the stiffness of the elastic blocks to be connected in series based on the target shear loading stiffness includes: Obtain the shear loading stiffness of the device when no elastic block is installed; The stiffness of the elastic blocks to be connected in series is calculated by using the equipment shear loading stiffness and the target shear loading stiffness, combined with the series stiffness formula.

3. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 1, characterized in that, The method of determining the size range of the elastic block using available installation space includes: Measure the distance between the tangential loading end and the lower shear box in the initial installation state, and take this distance as the maximum length of the elastic block; The maximum diameter of the elastic block is determined by considering the installation location and the dimensions of the surrounding structural components.

4. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 3, characterized in that, Before measuring the distance between the tangential loading end and the lower shear box in the initial installation state, the method further includes: The sample is installed in the upper shear box and the lower shear box respectively. With the position of the upper shear box fixed, the position of the lower shear box is adjusted to form the preset initial installation state of the sample.

5. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 1, characterized in that, The selection of candidate elastic block materials based on the determined size range and elastic block stiffness includes: By utilizing the size range and the stiffness of the elastic block, the range of elastic modulus selection for candidate elastic block materials is calculated; Materials with elastic modulus within the selected range are selected as candidate elastic block materials.

6. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 1, characterized in that, The calculation of the compressive modulus of each material in the candidate elastic block material includes: Compression tests were conducted on standard blocks of candidate elastic block materials to calculate the compressive modulus of each candidate elastic block material.

7. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 6, characterized in that, The compression test using standard blocks of candidate elastic bulk materials includes: Each standard block has multiple monitoring points set at fixed intervals along the axial direction. At each monitoring point, multiple axial strain gauges are arranged in different directions along the circumference of the standard block. The multiple axial strain gauges are set at intervals, and the axial direction of each strain gauge is consistent with the axial direction of the standard block. The displacement control mode is adopted, and each standard block is subjected to axial compression loading at a constant control rate. When the compression load reaches the preset maximum load, the loading is stopped and the load is unloaded.

8. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 7, characterized in that, The compression test using standard blocks of candidate elastic bulk materials also includes: For each candidate elastic block material, a standard block is selected; Each standard block was subjected to multiple rounds of repeated loading cycles, and the load-deformation relationship of each standard block in the multiple rounds of repeated loading tests was recorded.

9. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 8, characterized in that, The calculation of the final dimensions of the elastic block based on the compression modulus, after recording the load-deformation relationship of each standard block in multiple rounds of repeated loading tests, includes: A standard block that exhibits a linear response in its load-deformation curve during multiple loading cycles, with the slope deviation of each cycle's curve within a preset threshold, is selected as the final elastic block material.

10. The method for controlling the shear loading stiffness of a device based on a series of elastic blocks as described in claim 9, characterized in that, After selecting a standard block as the final selected elastic block material, the process includes: (The process involves selecting a standard block whose load-deformation curve exhibits a linear response during multiple loading cycles, and whose slope deviation for each cycle is within a preset threshold.) Based on the compressive modulus of the finally selected elastic block material and the stiffness of the elastic blocks to be connected in series, the final dimensions of the elastic blocks are calculated.

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