Abstract: By means of elastic-plastic analysis, the shakedown of thickwall cylindrical tube subjected to internal pressure and temperature is discussed. The shakedown load domains of thickwall cylindrical tube subjected to impulse cyclic loads, or symmetrical cyclic loads, or internal pressure and temperature changing independently are given. In which, the shakedown load domain of a structure under symmetrical loads is it’s elastic-limit load domain. By using linear yield condition, the conclusion is proved in this paper.

Key words: 交变载荷, 塑性, 压力容器