華慕文　孫先國

摘 要：電驅動振動臺架有高速、重載的特點，疲勞強度評估是機械設計中的重要一環(huán)。傳統(tǒng)的疲勞強度評估，多基于靜態(tài)安全系數(shù)法。本文針對某高速電機振動臺架，發(fā)展了一種基于非線性有限元技術的動態(tài)仿真和疲勞強度評估的方法，并優(yōu)化了相關設計參數(shù)，取得了良好效果，對其他類似測試臺架的設計也有一定的借鑒意義。

關鍵詞：電驅動 振動臺架 有限元法 振動疲勞

Fatigue Design Method and Application of Electric Drive Vibration Fixture

Hua Muwen，Sun Xianguo

Abstract：Electric drive vibration fixture is working under high speed and heavy gravity. Fatigue strength assessment is an important part of mechanical design， which is usually based on the traditional static safety factor method. This article demonstrates an example of dynamic simulation and fatigue strength assessment methods based on nonlinear finite element analysis for a high-speed motor vibration fixture， then optimizes relevant design parameters， and achieves good results. It can be used as reference for the design of other similar test bench.

Key words：electric drive， vibration fixture， FEM， vibration fatigue