S弯热应变分析及数值模拟  

The shrinkage strain analysis of the S-bend during cooling and simulation

作　　者：路建武[1] 宋云涛[1] 徐薇薇[1] 王忠伟[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《低温与超导》2011年第3期27-29,共3页Cryogenics and Superconductivity

基　　金：国家973项目"ITER高温超导超大电流引线型超导传输线的研究"(2008CB717906);ITER计划专项"我国承担ITER计划任务相关科学问题和关键技术的研究"(2008GB102000)

摘　　要：为了确定S弯结构在降温过程中的变形情况,基于卡氏定理对其一端建立温差位移和广义支反力之间的方程组,根据计算出的广义支反力求解该结构上各处的轴向应变。通过数值模拟对该方法计算出的最大应变和最小应变进行校核,两者非常吻合。可以认为:运用该方法计算类似结构的应变分布是可行的,计算出的结果具有较高的准确度。The equations between temperature displacements and general support reactions occurred in one end were established based on Castigliano theorem to study the deformation of S - bend structure during cooling. Then according to the calculated general support reactions, the axial strain in this structure could be solved. A simulation also was carried out to check the result worked out in this calculation. And two results were in good agreement. It is shown that this method used to calculate the distribution of axial strain in similar structure is feasible, and the calculated result is highly accurate.

关 键 词：降温过程 卡式定理 应变 数值模拟 

分 类 号：TU364[建筑科学—结构工程]