摘要
根据高温下金属应力松弛的基本特征,提出用以描述应力松弛行为的表达式。该表达式可用于拟合松弛试验结果,并根据试验结果预测不同初应力时的应力松弛行为。本文还推导了重复加载条件下松弛剩余应力的计算公式。用不同材料试验数据的验证结果表明。
Based on the basic character of stress relaxation of metals at elevated temperature,a new expression is proposed,which can be used for fitting the experiment data and estimating the relaxation behavior at the same temperature for any other initial stress value.An approach is also deduced to predict the residual stress under conditions of reloading.The curves of stress relaxation obtaining from present method coincides with experiment results very well.
出处
《机械强度》
CAS
CSCD
北大核心
1997年第3期57-60,共4页
Journal of Mechanical Strength
关键词
应力松驰
高温
抗松弛
残余应力
重复加载
金属
stress relaxation,elevated temperature,relaxation resistance,residual stress,reloading