Method for quickly simulating box type vibration clamp

Abstract

The invention discloses a method for quickly simulating a box type vibration clamp, and aims to provide a clamp simulation method which is high in modeling precision and small in unit number. According to the technical scheme, the method comprises the steps that a vertical plate and a reinforcing rib of the box type vibration clamp are projected to the upper surface of a bottom plate, a projection of a quadrangle formed by series connection and intersection of the reinforcing rib and the vertical plate is generated, the middle line of the short side of the quadrangle is taken as an initial positioning line of a connecting line of intersection points of the vertical plate and the reinforcing rib, and a bent beam model is constructed at the initial positioning line; discrete grounding springs are adopted to approximate the rigidity of a bending beam model, spring positioning points are classified, the grounding springs are arranged at the spring positioning points, and a box type vibration clamp model is simplified into a model with the grounding springs overlapped on a bottom plate; equivalent mass is added according to the mass of the reinforcing ribs and the vertical plate, grids are divided on the bottom plate, grid nodes are added at the grounding spring positioning points, and thus performing modal solution of the simplified model after reinforcing and supporting boundary conditions are applied to the inner side and the outer side of the clamp bottom plate to obtain a modal simulation result.

Description

technical field [0001] The invention relates to a method for rapidly simulating a box-type vibration fixture in the field of vibration fixture structure design. Background technique [0002] In order to ensure that the equipment can work normally in a certain vibration environment, before delivery, the vibration simulation test (referred to as vibration test) is often used to simulate various vibration environments. In actual engineering, in order to judge the anti-vibration function and anti-vibration strength of the product, an assessment test based on random vibration must be carried out. On the other hand, in order to improve the reliability indicators of electronic, electrical and mechatronic products, efficient environmental stress screening and multi-factor comprehensive environmental tests are being implemented. In these reliability environmental tests, random vibration is also the most basic test. means. Random vibration testing is a branch of vibration testing. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current box-type vibrating fixture lacks a suitable simplified simulation method, which is not conducive to the optimal design, and provides a rapid Method for Simulating Box Vibration Fixtures

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