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W-shaped elastic strip parametric modeling method

A technology of parametric modeling and elastic strips, which is applied in the fields of electrical digital data processing, design optimization/simulation, instruments, etc., and can solve problems such as modeling efficiency and accuracy defects, large data volume, and existence of errors

Pending Publication Date: 2020-02-07
CHINA RAILWAY DESIGN GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to measure and collect the coordinates of each part of the spring structure, the amount of data is large, there are errors in the steps of data collection and fitting, and it is difficult to guarantee the modeling efficiency and accuracy of the spring
Therefore, the existing spring modeling method has certain defects in modeling efficiency and accuracy

Method used

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  • W-shaped elastic strip parametric modeling method
  • W-shaped elastic strip parametric modeling method
  • W-shaped elastic strip parametric modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0116] Embodiment: Now take the TSDIYG-KJ1 type elastic strip, WL01 type elastic strip and type II elastic strip as examples for illustration

[0117] Respectively compare the difference between the design dimensions of the above three elastic strips. Obtain the front view and expanded view of the above three elastic strips, and extract the 10 parameters required by the space curve equation, as shown in Table 2. Input the parameters in the table into the parametric modeling program, and calculate the space curves of the axes of the above three types of clips as follows: Image 6 shown.

[0118] Table 2 Basic parameters of three elastic bars (unit: mm)

[0119]

[0120] The space curve of the clip axis calculated by the program applies the relevant parameters in the front view of the clip and the unfolded view. In order to verify the correctness of the program, the top view and side view of the clip axis simulated by the program are compared with the actual clip axis. Comp...

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Abstract

The invention discloses a W-shaped elastic strip parametric modeling method which comprises the following steps: A, acquiring design parameters in a front view and an expanded view of an elastic strip; B, calculating an elastic strip front view curvilinear equation and an elastic strip expansion graph curvilinear equation; C, based on the symmetrical structure of the elastic strip, obtaining an elastic strip overall axis space curve equation;C, compiling a parameterized modeling program by utilizing Matlab software, wherein the parameterized modeling program has the function of quickly obtaining an elastic strip axis space curve equation based on elastic strip design parameters; and E, inputting the diameter D of the elastic strip, and finishing modeling by utilizing finite element software. The method has the beneficial effects that the elastic strip axis space curve equation can be obtained through a parameterized modeling program only by acquiring basic parameters of the elastic strip structure, namely, the formula, and the precision, and the corresponding finite element model can be quickly and accurately established by utilizing finite element software on the basis of the equation and the diameter D of the elastic strip.

Description

technical field [0001] The invention relates to a modeling method of railway clips; in particular, it relates to a parametric modeling method of W-shaped clips. Background technique [0002] There are mainly two types of existing clip modeling methods. One is to directly establish the finite element model through software such as Solid Works based on the three-view view of the elastic bar. Although this method has high modeling efficiency, it is difficult to guarantee the modeling accuracy due to errors in the recognition of the three views by the software. The second is to use three-coordinate measurement and reverse engineering technology to collect data on the typical "W" structure spring, and obtain the center curve of the spring expressed by polynomial segments through data fitting, and establish a three-dimensional model based on this center curve. This method needs to measure and collect the coordinates of each part of the clip structure, the amount of data is large...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/17G06F119/14
Inventor 伍卫凡王健王伟华徐凌雁寇胜宇赵华卫张荣鹤
Owner CHINA RAILWAY DESIGN GRP CO LTD