柴油机活塞在复杂载荷条件下的强度研究  

Intensity Studying of Desiel Engine Piston Under complex load

作　　者：吕彩琴[1] 苏铁熊[1] 赵振峰[1] 

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《车辆与动力技术》2009年第2期31-36,共6页Vehicle & Power Technology

基　　金：山西省自然科学基金项目(20031042)

摘　　要：采用有限元分析手段,研究某型号柴油机活塞分别在热负荷、机械负荷作用下,以及热-机械负荷共同作用下的强度变化规律和变形规律,找出了机械应力、热应力在活塞应力与活塞变形中所作的贡献.将原方案和改进后的方案进行比较,结果表明改进后活塞第一环槽内的温度明显降低,证明了改进设计的有效性.The intensity and distortion of some type desiel engine piston seperately endured thermal load, mechanical load and thermal-mechanical coupled load are studied. The intensity and distortion variational rule of piston under these load are determined. The contributing of these load to distortion is analyzed. The result indicates that the temperature is fall on first piston ring after ameliorating, and that the modi- fied design is sucessful.

关 键 词：活塞 热负荷 机械负荷 热-机械耦合 强度研究 

分 类 号：TK424.1[动力工程及工程热物理—动力机械及工程]