柴油机机体的热―机耦合分析  

Thermo-mechanical coupling analysis of diesel engine body

作　　者：闫军朝[1] 李洪昌[1] 胡建平[2] 吴鲁定 

机构地区：[1]常州机电职业技术学院,江苏常州213164 [2]江苏大学现代农业装备与技术教育部重点实验室,江苏镇江212013 [3]江苏常发农业装备股份有限公司,江苏常州213176

出　　处：《中国农机化学报》2015年第4期143-147,共5页Journal of Chinese Agricultural Mechanization

基　　金："江苏省科技支撑计划(农业)资助项目(BE2012381);江苏省农机三新工程资助项目(NJ2013-04)

摘　　要：以490柴油机为研究对象,建立包括缸体、缸盖、缸套、缸垫、连接螺栓的内燃机机体装配多体接触模型,利用boost及TYCON软件,采用多场耦合方法,计算考虑螺栓预紧力、燃气压力、热负荷综合作用下的机体温度、应力与变形。通过对仿真数据的分析,表明分析数据与测试数据比较吻合,机体设计较安全。分析数据为进一步机体优化提供一定的参考依据。Taking 490 diesel engine as research object,the multi-component contact model of internal combustion engine body assembly which consisted of block,head,cylinder liner,gasket and joint bolts was constructed considering the contact effects among each of them.The body temperature,stress and deformation under the combined action of bolt pre-tightening force,gas pressure and heating load were conducted through using the multi-field coupling method by Boost and TYCON software.By analyzing the motion curves and simulation data,the analyzed data was found to be in accordance with test data,and the body design was safer.The simulation data can provide certain reliable reference for the better optimization of the diesel engine body.

关 键 词：机体 多体接触模型 多场耦合 有限元分析 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]