振動(dòng)、沖擊環(huán)境下支架減振器剛度優(yōu)化設(shè)計(jì)

Optimal Design of Bracket Isolator Stiffness in Vibration and Shock Environment

摘要: 文章在某型號(hào)的電子設(shè)備支架減振器設(shè)計(jì)中，綜合考慮了振動(dòng)、沖擊兩種主要的力學(xué)環(huán)境。以減振器剛度為設(shè)計(jì)變量，將剛度的倒數(shù)作為目標(biāo)函數(shù)，根據(jù)振動(dòng)、沖擊環(huán)境設(shè)計(jì)要求確定了約束條件，建立了減振器剛度優(yōu)化的數(shù)學(xué)模型。采用ANSYS作為優(yōu)化設(shè)計(jì)的平臺(tái)，隨機(jī)振動(dòng)響應(yīng)分析采用振型疊加法，沖擊響應(yīng)分析采用Newmark時(shí)間積分法，對(duì)該問題進(jìn)行了優(yōu)化求解，取得了滿意的結(jié)果，為電子學(xué)系統(tǒng)的減振設(shè)計(jì)提供了依據(jù)。

Abstract: In this paper, the bracket of a electric equipment is designed by considering the vibration and shock environment. According to the design requirement with respect to vibration and shock, the stiffness of the isolator is used as the design variable. The mathematical optimal model for searching the largest stiffness of isolator is built to make the relative displacement small. The optimal problem is solved using ANSYS. Both the mode superposition method and the Newmark integrating method are used to obtain the response of stochastic vibration and shock. The optimal results could be used in the isolator design of the electric system.