300MN模锻水压机机架的有限元模态分析  

Finite Element Modal Analysis of 300 MN Hydraulic Die Forging Press Stands

作　　者：黄明辉[1] 段智勇[1] 彭伟波[1] 

机构地区：[1]中南大学机电工程学院,湖南410083

出　　处：《中国重型装备》2008年第1期3-6,共4页CHINA HEAVY EQUIPMENT

基　　金：国家重点基础研究发展计划(973计划)资助项目(2005CB724102)

摘　　要：以300 MN模锻水压机为研究对象,应用有限元分析软件MSC.Nastran,对水压机的整体机架进行了有限元模态分析,得出了机架前6阶固有频率和相应的振型。机架不仅有前后、左右方向的弯曲振动,而且还有扭转振动。机架整体刚度和质量分布均衡。机架最小频率为2.564 3 Hz,最小固有频率小于20 Hz。300 MN Hydraulic Die Forging Press is used as subject investigated. Finite element analysis software MSC. Nastran is applied to the finite element modal analysis for the integral stands of the hydraulic press, to obtain natural frequency and corresponding vibration mode of the stands first six orders. The stands have not only bending vibration of fore-and-aft and left-and-nght directions, but also torsional vibration. Integral rigidity and mass distribution of the stands are uniform. The minimum frequency of the stands is 2. 5643Hz, and the natural frequency is less than 20Hz.

关 键 词：水压机 模态 振型 固有频率 阻尼 

分 类 号：O242.21[理学—计算数学]