某柴油机柴油滤支架振动疲劳断裂分析及优化设计  

Vibration Fatigue Fracture Analysis and Improved Design of a Diesel Filter Bracket

作　　者：冯垣洁[1] 杨贵春[1] 牛军[1] 宋海涛[1] 张强[1] 尹玉婷[1] 

机构地区：[1]中国北方发动机研究所,天津300400

出　　处：《内燃机》2016年第5期39-43,共5页Internal Combustion Engines

摘　　要：某柴油机柴油滤支架在台架振动试验中,在持续复杂交变载荷的作用下,支架薄弱点发生疲劳断裂。我们采用有限元前后处理软件及有限元求解器对该支架进行振动疲劳仿真分析,使用古德曼图对支架薄弱位置进行FEMAP NASTRAN,安全系数评估,与实际断裂位置进行对比,验证仿真分析的正确性。在此基础上提出多种改进方案,并对新方案进行可靠性评估,确定最终方案。A fuel filter bracket of a diesel engine was ruptured in vibration test because of sustained alternating load. In this paper, vibration fatigue simulation about the bracket were performed by software FEMAP and finite element solver Nastran, safety factor and fatigue check were performed using Goodman diagrams, and compare the result to the actual ruptured position to verify the correctness of calculation. On this basis, put forward a variety of improvement schemes,evaluate the reliability of the those plans, and determine the best one.

关 键 词：柴油滤支架 FEMAP NASTRAN 振动疲劳 古德曼图 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]