Design method and design device for porous hydraulic buffer

Abstract

The invention provides a porous hydraulic buffer design method and a porous hydraulic buffer design device. The technical problem that the design process of damping holes of an existing buffer is complex is solved. The method comprises the following steps: forming a dynamic dominating equation and a hydraulic dominating equation of an ideal buffering process according to kinematics parameters and fluid mechanics parameters of the ideal buffering process of a piston in the buffer; according to the dynamic dominating equation and the hydraulic dominating equation, associated data of the throttling area and the buffering displacement in the piston buffering stroke are formed; the number of damping holes is set according to the piston buffering stroke, and the corresponding number of Gaussian integral points in the piston buffering stroke are obtained according to the number of the damping holes; and throttling characteristics among the damping holes are set according to the positions and the weights of the Gaussian integral points, and throttling characteristics in the damping holes are set according to the associated data. According to the rapid design method based on the Gaussian integral points, rapid engineering design can be achieved, and dependence on professional design software is reduced. A good buffering effect is obtained through a small number of damping holes, and engineering practical application is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic buffers, and in particular to a design method and a design device for a porous hydraulic buffer. Background Art

[0002] The porous hydraulic buffer dissipates the kinetic energy of the piston into heat energy through the throttling effect of the hydraulic damping hole to achieve a buffering effect. Due to its simple structure and strong buffering capacity, the porous hydraulic buffer is widely used in mechanical equipment such as lifting and transportation, port machinery and vehicle engineering. When the porous hydraulic buffer is working, the buffered object gradually covers the damping holes during the movement, so that the effective damping area changes with the movement stroke of the object. It is necessary to control this change relationship to obtain an ideal buffering effect.

[0003] In the prior art, buffer design is mainly carried out by establishing the kinematic, dynamic and hydraulic governing equations in the buffering process, and obtaining the damping hole design parameters corresponding to the ideal buffering process through software simulation and relatively complex optimization algorithms. This process often requires the use of professional simulation analysis software, the optimization algorithm used is relatively complex, and the design process is relatively cumbersome. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a design method and a design device for a porous hydraulic buffer to solve the technical problem of the complex design process of the damping holes of the existing buffer.

[0005] The method for designing a porous hydraulic buffer according to an embodiment of the present invention comprises:

[0006] According to the kinematic parameters and fluid mechanics parameters of the ideal buffering process of the piston in the buffer, the dynamic governing equation and the hydraulic governing equation of the ideal buffering process are formed;

[0007] According to the dynamic governing equation and the hydraulic governing equation, the correlation data between the throttling area and the buffer displacement in the piston buffer stroke are formed;

[0008] The number of damping holes is set according to the piston buffer stroke, and the corresponding number of Gaussian integral points within the piston buffer stroke is obtained according to the number of damping holes;

[0009] The throttling characteristics between the damping holes are set according to the positions and weights of the Gaussian integration points, and the throttling characteristics within the damping holes are set according to the associated data.

[0010] In one embodiment of the present invention, the kinematic parameters and fluid mechanics parameters of the ideal buffering process of the piston in the buffer are used to form the dynamic governing equation and the hydraulic governing equation of the ideal buffering process, which include:

[0011] Obtain kinematic parameters and quantitative data during ideal cushioning;

[0012] The governing dynamic equations and hydraulic pressure equations are established according to the kinematic parameters.

[0013] In one embodiment of the present invention, the data of association between the throttling area and the buffer displacement in the piston buffer stroke formed according to the dynamic governing equation and the hydraulic governing equation includes:

[0014] Using quantitative data, the throttling area data sequence in the piston buffer stroke is obtained through the dynamic governing equation and the hydraulic governing equation.

[0015] The associated data of the throttling area and the buffer displacement are formed according to the motion quantization data sequence and the throttling area data sequence.

[0016] In one embodiment of the present invention, the step of setting the number of damping holes according to the piston buffer stroke and obtaining a corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes includes:

[0017] Determine the Gaussian integration point z of the n-order Gaussian integral in the normalized interval [-1,1] according to the Gaussian integration point table i and integral weight h i , mapped to the Gaussian integral point x within the buffer range [0,L] through interval conversion i and integral weight s i .

[0018] In one embodiment of the present invention, the throttling characteristics between the damping holes are set according to the positions and weights of the Gaussian integral points, and the throttling characteristics within the damping holes are set according to the associated data, including:

[0019] Determine the throttling spacing of the damping hole according to the Gaussian integral point data;

[0020] Determine the throttling area of ​​the damping hole according to the correlation data;

[0021] The throttling aperture of the damping hole is determined according to the throttling area of ​​the damping hole.

[0022] In one embodiment of the present invention, the number of Gaussian integration points corresponding to the number of damping holes is 7, 10 or 15.

[0023] In one embodiment of the present invention, it further includes:

[0024] The iterative optimization of the throttling characteristics in the damping hole is formed by setting the aperture adjustment coefficient.

[0025] In one embodiment of the present invention, the iterative optimization includes:

[0026] The aperture adjustment coefficient and the coefficient adjustment step are formed, and the throttling aperture is iteratively optimized by verifying the dynamic governing equation and the hydraulic governing equation.

[0027] The porous hydraulic buffer design device of the embodiment of the present invention comprises:

[0028] A memory for storing program codes in the process of processing the porous hydraulic buffer design method as described above;

[0029] A processor is used to execute the program code.

[0030] In an embodiment of the present invention, a porous hydraulic buffer design device includes:

[0031] A buffer process establishment module, used for forming a dynamic governing equation and a hydraulic governing equation of an ideal buffer process according to kinematic parameters and fluid mechanics parameters of an ideal buffer process of a piston in a buffer;

[0032] An area displacement linkage module is used to form correlation data between the throttling area and the buffer displacement in the piston buffer stroke according to the dynamic governing equation and the hydraulic governing equation;

[0033] An integral point matching module is used to set the number of damping holes according to the piston buffer stroke, and obtain a corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes;

[0034] The throttling feature adaptation module is used to set the throttling features between the damping holes according to the positions and weights of the Gaussian integral points, and to set the throttling features within the damping holes according to the associated data.

[0035] The porous hydraulic buffer design method and design device of the embodiment of the present invention proposes a rapid design method based on Gaussian integral points, which can realize the rapid engineering design of the porous hydraulic buffer and reduce the dependence on professional design software. Compared with the complex optimization algorithm to reduce the design difficulty, the present invention can complete the rapid design through the Gaussian integral point table conversion, and can obtain a better buffering effect with a smaller number of damping holes, which is convenient for engineering practice application. It reduces the dependence on professional simulation analysis software and reduces the design difficulty compared with the complex optimization algorithm. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Shown is a schematic flow chart of a method for designing a porous hydraulic buffer according to an embodiment of the present invention.

[0037] Figure 2 The figure is a schematic diagram of a curve showing the change of the ideal throttling area with the buffer stroke, which is approximated by a finite number of Gaussian integral points in a design method for a porous hydraulic buffer according to an embodiment of the present invention.

[0038] Figure 3 The figure is a schematic diagram of a curve showing the change in buffer pressure with stroke of a combination of damping holes at different Gaussian points in a design method for a porous hydraulic buffer according to an embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of a curve showing the change of the buffering speed of the damping hole combination with different Gauss points over time in the design method of the multi-hole hydraulic buffer according to an embodiment of the present invention.

[0040] Figure 5 It is a schematic diagram of the structure of a multi-hole hydraulic buffer design device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer and more understandable, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] A method for designing a porous hydraulic buffer according to an embodiment of the present invention is as follows Figure 1 As shown. Figure 1 In this embodiment, the present invention includes:

[0043] Step 100: The dynamic governing equation and the hydraulic governing equation of the ideal buffering process are formed according to the kinematic parameters and fluid mechanics parameters of the ideal buffering process of the piston in the buffer.

[0044] Those skilled in the art will appreciate that in the field of finite element analysis, the motion state of a fluid or a rigid body can be described by a governing equation for process and boundary description. The piston motion process in an ideal piston buffering process and the fluid motion process of a hydraulic medium can be quantified by the relevant governing equation.

[0045] Step 200: Generate correlation data between the throttling area and the buffer displacement in the piston buffer stroke according to the dynamic governing equation and the hydraulic governing equation.

[0046] Those skilled in the art will understand that during the piston buffering process, the damping hole will be shielded by the piston movement, resulting in a dynamic correlation between the effective throttling area and the buffering displacement in the piston buffering stroke, and the characteristics of the dynamic correlation affect the effectiveness of achieving the buffering purpose.

[0047] Step 300: setting the number of damping holes according to the piston buffer stroke, and obtaining a corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes.

[0048] The setting position and number of the damping holes in the piston buffer stroke are related to the dynamic correlation characteristics reflected in the correlation data. The number of damping holes is determined according to the dynamic correlation characteristics in the piston buffer stroke (constraint contour) according to the correlation data. The set of damping holes that meets the dynamic correlation characteristics is determined using the Gaussian integral point set.

[0049] Step 400: setting the throttling characteristics between the damping holes according to the positions and weights of the Gaussian integral points, and setting the throttling characteristics within the damping holes according to the associated data.

[0050] Those skilled in the art will appreciate that by adjusting the position and weight of the Gaussian integration point, a polynomial with the highest possible order can be accurately integrated. The throttling area of ​​the corresponding damping hole and the spacing distribution of the damping hole can be mapped by determining the position and weight of the Gaussian integration point.

[0051] The porous hydraulic buffer design method of the embodiment of the present invention proposes a rapid design method based on Gaussian integral points, which can realize the rapid engineering design of the porous hydraulic buffer and reduce the dependence on professional design software. Compared with the complex optimization algorithm to reduce the design difficulty, the present invention can complete the rapid design through the Gaussian integral point table conversion, and can obtain a better buffering effect with a smaller number of damping holes, which is convenient for engineering practice application. It reduces the dependence on professional simulation analysis software and reduces the design difficulty compared with the complex optimization algorithm.

[0052] like Figure 1 As shown, in one embodiment of the present invention, it also includes:

[0053] Step 500: Iterative optimization of the throttling characteristics in the damping hole is formed by setting the aperture adjustment coefficient.

[0054] Based on the throttling characteristics in the damping hole formed by the Gaussian integral point position, an iterative process based on PID (proportional integral differential control) control is formed. The throttling characteristics of the damping holes in the damping hole set are adjusted by adjusting the adjustment coefficient, thereby realizing the adjustment of the damping buffering characteristics during the piston buffering stroke.

[0055] The porous hydraulic buffer design method of the embodiment of the present invention utilizes the aperture adjustment coefficient to form a feedback adjustment control process for the throttling characteristics and buffering effect of the damping hole, thereby realizing rapid determination of the throttling characteristics in the damping hole when a better buffering effect is achieved.

[0056] like Figure 1 As shown, in one embodiment of the present invention, based on the above embodiment, step 100 includes:

[0057] Step 110: Obtain kinematic parameters and quantitative data during an ideal buffering process.

[0058] The kinematic parameters are determined according to the physical description parameters of the ideal piston buffering process, and the quantitative data related to the kinematic parameters and discretely describing the ideal buffering process are obtained.

[0059] In one embodiment of the present invention, the quantized data of the ideal buffering process is calculated using a numerical integration method to obtain a motion quantized data sequence of each motion parameter under a small sampling interval. The temporal and discrete motion quantized data sequence of the main motion parameters includes:

[0060] Time series: t=[0,t1,…,t end ];

[0061] Shift sequence: x = [0, x1, ..., x end ];

[0062] Velocity sequence: v = [0, v1, ..., v end ];

[0063] Acceleration sequence: a=[0,a1,...,a end ].

[0064] Step 120: Establish dynamic governing equations and hydraulic governing equations according to kinematic parameters.

[0065] The dynamic governing equation is established through the motion parameters using the calculus relationship. The hydraulic governing equations such as flow continuity, damping hole pressure, flow, etc. are formed according to the influence of piston motion on the continuity of hydraulic flow, the influence on the damping hole pressure, and the influence on the damping hole flow.

[0066] like Figure 1 As shown, in one embodiment of the present invention, based on the above embodiment, step 200 includes:

[0067] Step 210: Apply the quantitative data to obtain a throttling area data sequence in the piston buffer stroke through the dynamic governing equation and the hydraulic governing equation.

[0068] Those skilled in the art can understand that the buffering effect of the piston during the piston buffering stroke is related to the throttling area that affects the flow of the hydraulic medium. By introducing the time, displacement, velocity and acceleration data into the governing equation, the sequential and discrete throttling area data sequence A=[0,A1,…,A end ].

[0069] Step 220: Generate association data of the throttling area and the buffer displacement according to the motion quantization data sequence and the throttling area data sequence.

[0070] The discrete throttling areas in the throttling area data sequence correspond to discrete data moments in the motion discrete data sequence, reflecting the throttling areas corresponding to the damping holes that satisfy the buffering effect when the piston reaches different displacement positions in the buffering stroke.

[0071] like Figure 1As shown, in one embodiment of the present invention, based on the above embodiment, step 300 includes:

[0072] Step 310: Obtain Gaussian integration point data corresponding to the number of damping holes.

[0073] The number of damping holes is formed based on the associated data and factors such as the displacement length of the buffer stroke, the rigidity of the stroke constraint profile and the throttling area. Those skilled in the art can understand that the preset Gaussian integral data is formed by the product of the associated data. The Gaussian integral point z of the nth order Gaussian integral in the normalized interval [-1,1] can be determined based on the one-dimensional to three-dimensional Gaussian integral point table in the mathematics manual. i and integral weight h i . Through interval conversion, it is mapped to the Gaussian integral point x within the buffer range [0,L] i and integral weight s i .in:

[0074]

[0075] L is the stroke length, integral weight s i is the distance between the i-th damping hole and the i-1-th damping hole.

[0076] like Figure 1 As shown, in one embodiment of the present invention, based on the above embodiment, step 400 includes:

[0077] Step 410: Determine the throttling spacing of the damping hole according to the Gaussian integral point data.

[0078] The coordinate data of the corresponding damping hole is calibrated using the coordinate data in the Gaussian integral point data, that is:

[0079] The distance between the i-th damping hole and the initial point l1 of the buffer stroke is l i ;

[0080]

[0081] Step 420: Determine the throttling area of ​​the damping hole according to the associated data.

[0082] Determine the correlation data of the ideal buffer process throttling area changing with displacement, which is used to determine the total throttling area sequence A corresponding to the Gaussian integral point in the buffer stroke i The throttling area of ​​the i-th damping hole is:

[0083]

[0084] Step 430: Determine the throttling aperture of the damping hole according to the throttling area of ​​the damping hole.

[0085] Obtain the diameter d of the i-th damping hole according to the throttling area of ​​the damping hole i for:

[0086]

[0087] like Figure 1 As shown, in one embodiment of the present invention, based on the above embodiment, step 500 includes:

[0088] Step 510: Form an aperture adjustment coefficient and a coefficient adjustment step, and perform iterative optimization of the throttling aperture by verifying the dynamic governing equation and the hydraulic governing equation.

[0089] In one embodiment of the present invention, the damping aperture obtained by the Gaussian integral point is uniformly multiplied by the correction coefficient α to obtain a better buffering effect, and the initial value of α can be 0.8. After the correction coefficient is determined, the buffering process curve is verified by the dynamic governing equation and the hydraulic governing equation, and the correction coefficient is fine-tuned according to the calculation result. The dynamic governing equation and the hydraulic governing equation are finitely iterated by adjusting the coefficient step length to quickly obtain a more ideal calculation result. The coefficient adjustment step length can be constant, gradually convergent or gradually expanded.

[0090] In practical applications, the damping holes formed by the design method of the porous hydraulic buffer of the present invention are set by Gaussian integral points, and the throttling area of ​​the damping holes formed is as follows: Figure 2 As shown in Figure 1, it conforms to the ideal trend of the throttling area changing with the buffer stroke, and can effectively obtain the ideal total throttling area requirement. The buffer pressure change of the damping hole formed by different numbers of Gaussian integral points in the buffer stroke is shown in Figure 1. Figure 3 As shown in Figure 1, the buffer pressure drops rapidly, which is in line with the ideal expectation of buffer pressure. The buffer speed changes of the damping holes formed by different numbers of Gaussian integral points in the buffer stroke are shown in Figure 1. Figure 4 As shown in , the buffering speed drops rapidly, which is in line with the ideal expectation of buffering time. Figure 3 to Figure 4 As shown, 7, 10 or 15 damping holes are formed according to the Gaussian integration points.

[0091] A porous hydraulic buffer design device according to an embodiment of the present invention comprises:

[0092] A memory for storing program codes in the process of processing the porous hydraulic buffer design method of the above embodiment;

[0093] A processor is used to execute the program code in the processing of the porous hydraulic buffer design method of the above embodiment.

[0094] The processor may be a DSP (Digital Signal Processor) digital signal processor, an FPGA (Field-Programmable Gate Array) field programmable gate array, an MCU (Microcontroller Unit) system board, a SoC (system on a chip) system board, or a PLC (Programmable Logic Controller) minimum system including I / O.

[0095] A porous hydraulic buffer design device according to an embodiment of the present invention is as follows Figure 5 As shown. Figure 5 In this embodiment, the present invention includes:

[0096] A buffer process establishment module 10, used to form a dynamic governing equation and a hydraulic governing equation of an ideal buffer process according to kinematic parameters and fluid mechanics parameters of an ideal buffer process of a piston in a buffer;

[0097] The area displacement linkage module 20 is used to form the correlation data between the throttling area and the buffer displacement in the piston buffer stroke according to the dynamic governing equation and the hydraulic governing equation;

[0098] The integral point matching module 30 is used to set the number of damping holes according to the piston buffer stroke, and obtain the corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes;

[0099] The throttling characteristic adaptation module 40 is used to set the throttling characteristics between the damping holes according to the positions and weights of the Gaussian integral points, and to set the throttling characteristics within the damping holes according to the associated data.

[0100] like Figure 5 As shown, in one embodiment of the present invention, it also includes:

[0101] The throttling characteristic optimization module 50 is used to iteratively optimize the throttling characteristics in the damping hole by setting the aperture adjustment coefficient.

[0102] like Figure 5 As shown, in one embodiment of the present invention, the buffer process establishment module 10 includes:

[0103] A parameter data acquisition unit 11, used to obtain kinematic parameters and quantitative data in an ideal buffering process;

[0104] The correlation equation establishing unit 12 is used to establish the dynamic governing equation and the hydraulic governing equation according to the kinematic parameters.

[0105] like Figure 5 As shown, in one embodiment of the present invention, the area displacement linkage module 20 includes:

[0106] A throttling area forming unit 21 is used to obtain a throttling area data sequence in a piston buffer stroke by applying the quantized data through a dynamic governing equation and a hydraulic governing equation;

[0107] The associated data forming unit 22 is used to form associated data of the throttling area and the buffer displacement according to the motion quantization data sequence and the throttling area data sequence.

[0108] like Figure 5 As shown, in one embodiment of the present invention, the integral point matching module 30 includes:

[0109] The integral data matching unit 31 is used to obtain Gaussian integral point data corresponding to the number of damping holes.

[0110] like Figure 5 As shown, in one embodiment of the present invention, the throttling feature adaptation module 40 includes:

[0111] A spacing forming unit 41 is used to determine the throttling spacing of the damping hole according to the Gaussian integral point data;

[0112] An area forming unit 42, used to determine the throttling area of ​​the damping hole according to the associated data;

[0113] The aperture forming unit 43 is used to determine the throttling aperture of the damping hole according to the throttling area of ​​the damping hole.

[0114] like Figure 5 As shown, in one embodiment of the present invention, the throttling characteristic optimization module 50 includes:

[0115] The optimization adjustment unit 51 is used to form an aperture adjustment coefficient and a coefficient adjustment step, and perform iterative optimization of the throttling aperture by verifying the dynamic governing equation and the hydraulic governing equation.

[0116] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for designing a porous hydraulic buffer, characterized in that: include: According to the kinematic parameters and fluid mechanics parameters of the ideal buffering process of the piston in the buffer, the dynamic governing equation and the hydraulic governing equation of the ideal buffering process are formed; According to the dynamic governing equation and the hydraulic governing equation, the correlation data between the throttling area and the buffer displacement in the piston buffer stroke are formed; The number of damping holes is set according to the piston buffer stroke, and the corresponding number of Gaussian integral points within the piston buffer stroke is obtained according to the number of damping holes; The throttling characteristics between the damping holes are set according to the positions and weights of the Gaussian integration points, and the throttling characteristics within the damping holes are set according to the associated data.

2. The method for designing a porous hydraulic buffer according to claim 1, characterized in that: The dynamic governing equation and hydraulic governing equation of the ideal buffering process formed according to the kinematic parameters and fluid mechanics parameters of the ideal buffering process of the piston in the buffer include: Obtain kinematic parameters and quantitative data during ideal cushioning; The governing dynamic equations and hydraulic pressure equations are established according to the kinematic parameters.

3. The method for designing a porous hydraulic buffer according to claim 2, characterized in that: The associated data of the throttling area and the buffer displacement in the piston buffer stroke formed according to the dynamic governing equation and the hydraulic governing equation include: Using quantitative data, the throttling area data sequence in the piston buffer stroke is obtained through the dynamic governing equation and the hydraulic governing equation. The associated data of the throttling area and the buffer displacement are formed according to the motion quantization data sequence and the throttling area data sequence.

4. The method for designing a porous hydraulic buffer according to claim 3, characterized in that: The step of setting the number of damping holes according to the piston buffer stroke and obtaining a corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes includes: Determine the Gaussian integration point z of the n-order Gaussian integral in the normalized interval [-1,1] according to the Gaussian integration point table i and integral weight h i , mapped to the Gaussian integral point x within the buffer range [0,L] through interval conversion i and integral weight s i .

5. The method for designing a porous hydraulic buffer according to claim 4, characterized in that: The step of setting the throttling characteristics between the damping holes according to the positions and weights of the Gaussian integral points and setting the throttling characteristics within the damping holes according to the associated data comprises: Determine the throttling spacing of the damping hole according to the Gaussian integral point data; Determine the throttling area of ​​the damping hole according to the correlation data; The throttling aperture of the damping hole is determined according to the throttling area of ​​the damping hole.

6. The method for designing a porous hydraulic buffer according to claim 4, characterized in that: The number of Gaussian integration points corresponding to the number of damping holes is 7, 10 or 15.

7. The method for designing a porous hydraulic buffer according to claim 1, characterized in that: Also includes: The iterative optimization of the throttling characteristics in the damping hole is formed by setting the aperture adjustment coefficient.

8. The method for designing a porous hydraulic buffer according to claim 7, characterized in that: The iterative optimization includes: The aperture adjustment coefficient and the coefficient adjustment step are formed, and the throttling aperture is iteratively optimized by verifying the dynamic governing equation and the hydraulic governing equation.

9. A multi-hole hydraulic buffer design device, characterized in that: include: A memory for storing program codes in the process of processing the porous hydraulic buffer design method according to any one of claims 1 to 8; A processor is used to execute the program code.

10. A multi-hole hydraulic buffer design device, characterized in that: include: A buffer process establishment module, used for forming a dynamic governing equation and a hydraulic governing equation of an ideal buffer process according to kinematic parameters and fluid mechanics parameters of an ideal buffer process of a piston in a buffer; An area displacement linkage module is used to form correlation data between the throttling area and the buffer displacement in the piston buffer stroke according to the dynamic governing equation and the hydraulic governing equation; An integral point matching module is used to set the number of damping holes according to the piston buffer stroke, and obtain a corresponding number of Gaussian integral points within the piston buffer stroke according to the number of damping holes; The throttling feature adaptation module is used to set the throttling features between the damping holes according to the positions and weights of the Gaussian integral points, and to set the throttling features within the damping holes according to the associated data.

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