摘要
某柴油发动机齿轮室盖在试验中振动较大,为解决这一问题,文章采用声学振动测试与CAE模态分析相结合的方法,对齿轮室盖进行优化设计,并进行试验验证。结果证明通过在齿轮室盖薄弱位置处添加加强筋,可以有效提高其固有频率,避开发动机在3600r/min转速下的主要贡献频率,改善齿轮室盖的振动情况。CAE模态分析方法能够有效识别结构件的薄弱区域,通过加强局部刚度,改善振动性能。
In order to solve the greater vibration of gearbox cover of a diesel engine in the experiment,the acoustics vibration test and CAE modal analysis method were combined to optimize design of gearbox cover of a diesel engine and test validation was proceeded.The result has proved that the ribs on the weakness region would increase the frequency,avoid the main contribute frequency at 3 600 r/min and improve the vibration performance of gearbox cover.CAE modal analysis method can distinguish the weakness regions from structure effectively,vibration performance can be improved by increasing the local rigidity.
出处
《汽车工程师》
2011年第7期59-61,共3页
Automotive Engineer
关键词
发动机齿轮室盖
机械振动测试
CAE
模态分析
Gearbox cover of diesel engine
Mechanical vibration test
CAE
Modal analysis
