Damper simplification method in finite element simulation analysis and computer equipment
A simulation analysis, finite element technology, applied in design optimization/simulation, instrumentation, geometric CAD, etc.
Active Publication Date: 2021-07-06
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
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[0003]
Based on this, it is necessary to provide a damper simplification method and computer equipment in the finite element simulation analysis for the problem of how to simplify the damper used in the precision guide rail without affecting the calculation accuracy in the finite element simulation analysis
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[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated list...
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The invention relates to the technical field of finite element simulation analysis, and discloses a damper simplification method in finite element simulation analysis and computer equipment. The method comprises the steps: establishing a three-dimensional solid model of a guide rail and a damper; performing grid division on the three-dimensional solid model to obtain a finite element model; calculating kinetic parameters of an oil film on a contact surface between the guide rail and the damper; adding a spring damping unit in the finite element model according to the oil film kinetic parameters; and performing mechanical simulation analysis on the finite element model added with the spring damping unit. The spring damping unit is adopted to replace an oil film, only structural force simulation can be carried out on the guide rail and the damper, complex calculation combining fluid simulation and structural force simulation does not need to be carried out, and therefore the finite element model building process of the damper for the guide rail pair in finite element simulation analysis is simplified. Meanwhile, the calculation amount of finite element analysis is simplified, the analysis efficiency is improved, and it can be guaranteed that the calculation precision is not lost.
Description
technical field [0001] The invention relates to the technical field of finite element simulation analysis, in particular to a damper simplification method and computer equipment in finite element simulation analysis. Background technique [0002] The precision sliding table transmission device composed of rolling linear guide rail pairs is the key transmission part of high-end CNC machine tools, which has the characteristics of high rigidity, high load, high speed, and high precision positioning. Or line contact, compared with the surface-to-surface contact of the traditional slide rail, the only disadvantage is the poor anti-vibration performance, which will directly lead to poor dynamic characteristics of the CNC machine tool. The contact stiffness of the slider-rail junction usually becomes a weak link in the stiffness of the whole machine, and thus becomes a major factor affecting the accuracy of the whole machine. At the same time, the contact damping characteristics o...
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IPC IPC(8): G06F30/23G06F30/17G06F119/14
CPCG06F30/23G06F30/17G06F2119/14Y02T90/00
Inventor 刘文威董成举王春辉郭广廓林家领樊依圣王远航李小兵陈勃琛
Owner CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST