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Bushing modeling method

A modeling method and bushing technology, applied in the field of bushing modeling, can solve problems such as the coupling problem of bushings that cannot be reflected, and achieve the effect of high accuracy and avoiding displacement distortion.

Inactive Publication Date: 2015-06-24
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a bushing modeling method for the defect that the existing Adams / car built-in bushing model cannot reflect the coupling problem of bushing stiffness in all directions

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[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] like figure 1 As shown, the bushing modeling method provided by an embodiment of the present invention includes the following steps:

[0039] 101. Establish a 3D model of the bush, wherein the established 3D model of the bush includes the shape, position, direction and internal structure information of the bush. like image 3 and Figure 4 Shown is a schematic diagram of the external structure of a bushing 3D model. The bushing includes an outer sleeve 10 made of metal, a rubber body 20 arranged inside the outer sleeve 10 and an inner sleeve 30 made of metal a...

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Abstract

The invention provides a bushing modeling method. The method includes: dividing parts of a bushing 3D (three-dimensional) model predefined, into finite element grids; determining material attributes of the finite element grids of the parts of the bushing 3D model, with the material attributes referring to density, Poisson's ratio and elastic modulus of materials of each part of the bushing; according to order, computing mode and load-step of output modality of a flexible body of the predefined bushing, computing the finite element grids to obtain frequencies and vibration modes of all orders of modality of the flexible body and also an animation file of the flexible body; converting the animation file of the flexible body into a modal neutral file, and importing the modal neutral file into motion simulation software of the flexible body, and establishing a bushing flexible body model. The bushing flexible body model acquired by the bushing modeling method can reflect isotropic stiffness coupling problems of the bushing, a bushing stiffness curve can be acquired with no need for testing, precision of the bushing flexible body model is improved, and testing time is saved.

Description

technical field [0001] The invention relates to the technical field of bushings, in particular to a bushing modeling method. Background technique [0002] Due to the force (including longitudinal force and lateral force) and moment (alignment moment) between the tire and the road surface, the bushing in the suspension is deformed, which in turn changes the wheel alignment parameters (such as toe-in, camber) , we call this change the C characteristic of the suspension. The bushing modeling method has a crucial influence on the C-characteristics of the suspension. [0003] At present, the Adams / car built-in bushing model commonly used by automobile manufacturers, the Adams / car built-in bushing model consists of three static stiffness curves along the x, y and z axes of the bushing and the x, y and z axes The 3 torsional stiffness curves describe. [0004] However, using this bushing model, the bushing stiffness curve must be obtained through experiments, and the results obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/30
Inventor 刘波王彧王黎明王建宜吴保玉
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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