Free molded surface grid division method for rod end joint rigidity calculation
A technology of stiffness calculation and surface grid, which is applied in the field of mesh division of finite element analysis, can solve the problems of inaccurate simulation analysis data, insufficient calculation accuracy of stiffness of rubber layer and spacer layer, and low efficiency, so as to improve calculation efficiency , Mesh division is reasonable, and the effect of improving accuracy
Pending Publication Date: 2022-01-28
ZHUZHOU TIMES NEW MATERIALS TECH
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a free-form surface mesh division method for the calculation of the stiffness of the rod end joint, which solves the problem of insufficient calculation accuracy of the stiffness between the rubber layer and the spacer layer in the rod end joint, which leads to simulation analysis. The problem of inaccurate data and low efficiency
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[0033] The present invention will be further described below in conjunction with specific implementation methods. In this embodiment, the treatment of the sharp corner area and the method of mesh division are described in conjunction with the free surface state formed between the rubber layer and the spacer in the specific rod end joint. .
[0034] like Figure 1~3 As shown, this embodiment provides a free-form surface meshing method for calculating the stiffness of the rod-end joint, including: obtaining a two-dimensional cross-section C of the rod-end joint and an enlarged view C' of the free-form surface.
[0035] like Figure 4 As shown, the free-form surface includes a sharp corner area A. In this embodiment, the sharp corner area A includes the intersecting first arc segment R01 and the second arc segment R02, and the first straight arc segment intersecting the second arc segment R02. The line segment L1, the third arc segment R03 intersecting with the other end of the...
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The invention discloses a free molded surface grid division method for rod end joint rigidity calculation, which comprises the following steps: passivating a sharp corner area of a free molded surface, and segmenting the free molded surface by taking a midpoint of a first arc section, an intersection point of a second arc section and a first straight line section and a midpoint of a third arc section as basic control points; enabling a basic control line to extend from the basic control point to the rod end joint body, so that a surface region, located on the inner side of the free molded surface, on the two-dimensional section is cut into a plurality of closed or non-closed sub-surface regions through the basic control line; performing tetrahedral mesh layout on the sub-surface domains to form total cross-section mesh layout. The invention comprises performing grid division processing on a free molded surface containing a sharp corner area; the precision in the calculation process of the rigidity of the sharp corner area is improved through passivation treatment; the free molded surface is subjected to segmentation treatment, so that the free molded surface is better subjected to surface domain cutting, and the precision and the calculation efficiency in the follow-up finite element analysis and rigidity calculation process of the free molded surface are improved.
Description
technical field [0001] The invention relates to the technical field of grid division for finite element analysis, in particular to a free-form surface grid division method for calculating the joint stiffness of a rod end. Background technique [0002] The rod end joint is a flexible connection installed on the rod end, including the connecting rod joint, the draw bar joint, and the rotor flexible connection. It is widely used in the control and power transmission systems in the fields of rail transportation and aerospace; It is made of mandrel, spacer, outer joint and rubber vulcanization. According to the structure, it is divided into single-layer rod end joint and multi-layer rod end joint. Among them, multi-layer rod end joint refers to the joint that contains multiple layers of rubber and multi-layer spacer. Metal rubber vulcanized rod end bearings, multi-layer rod end joints have better multi-bearing load capacity, and can simultaneously bear large radial loads, axial l...
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IPC IPC(8): G06F30/23G06T17/20
CPCG06F30/23G06T17/20
Inventor 王金辉谭方张运珍唐维黄友剑
Owner ZHUZHOU TIMES NEW MATERIALS TECH