摘要
作为涡轮增压器的核心零件,研究涡轮增压器涡轮的结构优化尤其重要。本文对某型涡轮增压器涡轮在高转速下出现轮毂处破损失效模式的结构形式进行结构优化。首先通过有限元计算结果分析,找到涡轮增压器涡轮应力集中位置,然后针对出现的大应力区进行几何优化,最后对比各优化方案,找出应力值最小并低于材料屈服强度值最优方案。本文的应力计算结果对于设计涡轮结构,提高涡轮结构强度,具有一定的参考价值。
As the core part of turbocharger, structure optimization of turbocharger is partic- ularly important. In this paper, a turbocharger turbine wheel at high speeds appear damaged structure failure modes of the structure optimization. The results calculated by finite element a- nalysis, find the turbocharger turbine stress concentration position, then according to the high stress zone geometry optimization, comparison of the various optimization scheme, to find the lowest stress value and less than the material yield strength value of the optimal scheme. Stress the results in this paper for the design of the structure, improve the structural strength, has a certain reference value.
出处
《内燃机与配件》
2014年第2期13-16,共4页
Internal Combustion Engine & Parts
关键词
涡轮
有限元分析
应力集中
应力值
Turbine wheel Finite element Analysis Stress concentration Stress value
