马庆镇，尹慧琼，杜祥宁，姚 敏

(潍柴动力股份有限公司 发动机技术研究院，山东 潍坊 261061)

摘要：本文以某气缸体为研究对象，在设计阶段，利用有限元、边界元、多体动力学计算手段对气缸体辐射噪声进行仿真分析，并提供改进方案，提出了低噪声气缸体的解决方案。

关键词：气缸体；多体动力学；噪声；有限元；边界元

Abstract：In this paper，a engine cylinder block is considered as its research object.  Noises from cylinder blocks are simulated by using MBS/FEM/BEM. And a solution is designed, decreasing the cylinder block noise.

Key words：Cylinder Block；MBS；Noise；FEM；BEM