YC4108Q柴油机机体的动态特性分析及结构改进  

The Dynamic Characteristics Analysis and Structure Improvement for the Cylinder Block of YC4108Q Diesel Engine

作　　者：李佑长[1] 李君[1] 方华[1] 沈捷 卢伟 

机构地区：[1]吉林大学 [2]广西玉柴机器股分有限公司

出　　处：《汽车工程》2002年第4期318-321,共4页Automotive Engineering

摘　　要：以广西玉柴最新开发的YC4108Q柴油机机体为研究对象。通过试验模态分析,获得了机体的基本振型和相关频率;以试验数据为依据,结合三维CAD软件UG和大型结构分析软件MSS.NASTRAN的优势,通过应用不同的单元划分网格进行比较,建立了机体的三维有限元动态计算模型;利用已建模型,对机体结构进行了分析并得到改进方案。In this paper, a cylinder block of YC4108Q diesel engine is studied. By experimental modal analysis,the mode shapes and natural frequency of the cylinder block are obtained.Then based on the test data, and using 3-D CAD software UG and structure analysis software MSC. NASTRAN, a 3-D FEA dynamic model of cylinder block is built and analyzed. Finally, the best improvement scheme for the structure of cylinder block is obtained based on the analysis results.

关 键 词：动态特性 结构改进 柴油机 机体 有限元分析 模态分析 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]