损伤热力钢弯管三维热塑性有限元分析  

ANALYSING THE FINITE ELEMENT OF THREE DIMENTIONAL HOT PLASTICITY TO DAMAGE THERMODYNAMIC STEEL ELBOW

作　　者：熊先仁[1] 茆田杨[1] 马兆纬 王文安[1] 邹家兴[1] 

机构地区：[1]江西电力职工大学,武汉水利电力大学

出　　处：《江西科学》1995年第1期16-20,共5页Jiangxi Science

摘　　要：热力钢弯管是主蒸汽管道的薄弱部位之一，其寿命直接关系到整个管道系统寿命。笔者采用三维热塑性有限元的分析方法，详细研究了热力钢弯管在内压力和高温作用下的应力场特点，并提出了“危险截面”和“危险点”的判据。The heat- resisting steel elbow is one of the weak parts of the main vapour piping,the life of which is directly related to the life of entire piping system.In this paper the characteristics of the stress field of heat-resisting steel elbow under the action of internal pressure and high temperature are studied in details by analysing the finite element of three dimentional hot plasticity.On this basis the criterion for judging'the dangerous section'and'the dangerouspoint'is put forward.

关 键 词：热力钢弯管 热塑性 有限元 损伤强度 钢管 

分 类 号：TG335.7[金属学及工艺—金属压力加工]