高岩;郑忠才;刘波;张坤金;陈海鸥
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1:山东电子职业技术学院
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2:山东建筑大学机电学院
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3:青特集团有限公司
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摘要：根据S385型柴油机机体的结构特点,利用有限元分析方法对其进行了自由模态和约束模态的有限元分析。采用兰索斯法计算出了机体前十一阶自由模态和约束模态的固有频率及相应振型,通过振型分析找到了机体刚度的薄弱部位并提出了相应的修改措施,为机体结构的改进设计提供了理论依据。
关键词： 柴油机;机体;有限元;模态分析
Abstract: Free and constraint modal with
finite element analysis is conducted on S385 diesel engine block using FEA
according to its structural characteristics.The natural frequencies and
corresponding vibration modes of the first eleventh steps of each block in free
and constraint modal is calculated using Lanczos method.By the analysis of
vibration modes,the weak spots of the block were found and corresponding
improved schemes has been proposed.The analysis results provide a theoretical
support to improve the structural design of the block.
Keywords: Diesel Engine;Engine
Block;Finite Element;Modal Analysis
基金项目:山东省自然科学
参考文献：
[1]郑忠才,曹跃芳,刘波等.SD1105型柴油机机体结构试验模态分析及改进[J].小型内燃机与摩托车,2006(6):12-15.
[2]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998.
[3]刘玉梅,袁文华.SF480发动机机体的有限元和试验模态分析[J].农机化研究,2006(2):180-182.
[4]傅志方.振动模态分析与参数辨识[M].北京:机械工业出版社,1990.基金(项目号Y2006F33)
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