极限载荷分析法的有限元模型比较  

Comparison on FE Models forLimited load analysis Method

作　　者：张福君[1] 齐赞 Zhang Fujun;Qi Zan(Harbin Boiler Company Limited,Harbin 150046,China)

机构地区：[1]哈尔滨锅炉厂有限责任公司,黑龙江哈尔滨150046

出　　处：《锅炉制造》2019年第2期56-58,共3页Boiler Manufacturing

摘　　要：本文对某圆筒开孔接管结构的三种有限元模型进行了极限载荷分析,在相同载荷和约束的条件下计算了三种模型的极限载荷值,结果表明:忽略焊角高度的有限元模型与精确模型的极限载荷值比较吻合,壳单元与实体单元的计算结果非常接近,在采用极限载荷法进行压力防塑性垮塌破分析时,可以采用壳单元进行计算,以节省机时。Limited load analysis of cylindrical shell attached branch nozzle is carried out using three FE models.The limited loads of three models are calculated in the same boundary condition.The results show that the limited load of rough model agrees well with the accurate model,and the shell element is recommended to be used in the limited load analysis method for protecting against plastic collapse for saving time.

关 键 词：极限载荷分析 有限元 建模 壳单元 

分 类 号：TQ051[化学工程]