噪声与振动控制Issue(2)：82-86,5.DOI:10.3969/j.issn.1006-1335.2013.02.019
某型船用中速柴油机气阀阀桥导杆断裂问题
Study on the Fracture of Guide-rod of Air-valve-bridge of a Type of Marine Medium-speed Diesel Engines
潘震 1楼京俊 2刘文武2
作者信息
- 1. 海军驻广州广船公司军事代表室，广州 510382
- 2. 海军工程大学 船舶工程与动力学院，武汉 430033
- 折叠
摘要
Abstract
Fractures occur very often in guide-rods of air-valve-bridges for a type of marine medium-speed diesel engines. The fractures mainly appear in the guide-rod on the side near the exhaust-valve, and a few of them appear on the side near the air inlet-valve. In order to find the reason of fracture, the fracture surface of the valve-bridge guide-rod was scanned by electron microscope. By analyzing the fracture surface, it was concluded that the guide rod fracture belongs to fatigue fracture. Then, by establishing a simplified physical model for entire valve system, several critical stresses were computed by means of the finite element software NASTRON. Finally, the main reason of the guide-rod fracture was determined.关键词
振动与波/气阀阀桥导杆/断裂/有限元分析/NASTRONKey words
vibration and wave/the valve bridge guide rod/fracture/FEA/NASTRON分类
通用工业技术引用本文复制引用
潘震,楼京俊,刘文武..某型船用中速柴油机气阀阀桥导杆断裂问题[J].噪声与振动控制,2013,(2):82-86,5.
