摘要
为了研究大型压缩机组用闭式叶轮部装结构在实际工况下的力学性能表现,以有限元法为基础,利用非线性接触理论分析了某大型压缩机组用闭式叶轮部装结构在装配过程、变工况运行过程中的应力大小与分布情况,分析可知该叶轮部装结构不会因工艺装配产生的内应力发生破坏;闭式叶轮具有工作性质稳定区域和非稳定区域,多数该型叶轮部装结构在12000r/min以上运行时发生失效.分析结果证明该分析方法具有较高的实用价值和较强的应用推广性.
The mechanical properties of the closed impeller assembly in a heavy-duty turbine compressor was investigated under actual operating conditions.Based on FEM and nonlinear contact theory,the size and distribution of stress of the assembly were analyzed structurally in assembling process and under variable operating conditions.The results showed that the assembly cannot fail structurally due to the internal stress caused during its assembling.There are stable and non-stable operating regions of a closed impeller assembly and most of those assemblies will malfunction structurally if they work at a speed over 12000r/min.The analysis method proposed is highly practical in applications as a reference for the study on mechanical properties of other rotor assemblies.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第5期700-703,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(75104412)
关键词
透平压缩机
闭式叶轮
过盈配合
接触分析
应力
turbine compressor
closed impeller
interference fit
contact analysis
stress
