T-STAR反应器吊装过程有限元模拟分析

目的用有限元方法模拟分析神华集团T-STAR反应器吊装过程,解决其吊装过程的安全性问题.方法运用拟静力的思想,选取在吊装过程中具有代表性的几个姿态,通过有限元分析软件ANSYS计算得到吊耳、反应器颈部、裙座、底座环等反应器重点部位的应力分布.结果通过计算分析可看出,当采用不同方法对反应器计算模型的简支边界条件进行模拟时,其计算结果差异较大,说明了合理准确模拟结构边界条件的重要性.结论采用尾架溜尾的吊装方式安全合理.改进后的方案满足强度要求,为类似的结构吊装分析提供了借鉴.

Finite Element Analysis of T-STAR Reactor During Lifting

The lifting project of Shenhua T-STAR reactor ranks the largest one among the pressure vessels in Asia at present.In order to verify the safety of the lifting progress,equivalent static ideal is used and then several typical situations of the reactor during the lifting are selected to simulate the entire lift procedure in this paper.Through finite element analysis,the stress distribution of several important positions,including the lifting cover,the neck of the reactor,the skirt and the base ring,is investigated.During the analysis,two different methods are used to simulate the boundary conditions of the calculation model.Comparing the results,some valuable conclusions are obtained to illustrate the importance of accuracy and properness of boundary condition simulation.It provides valuable reference for similar lifting simulation.