EFFECTS OF DESIGN PARAMETER CHANGES ON THE FATIGUE LIFE OF LIGHT-BLOCKED COMPONENT

摘要：

The front end light-blocked components of the third generation of synchrotron radiation (SR) facility are subjected to intense thermal cycles from the high intensity X-ray beams.This work studies the effects of design parameter changes on the stress-strain responses and at last on the thermal fatigue lives of a simplified light-blocked component.A thermal elastoplastic finite element method (FEM) was used to simulate the stress-strain variation of the component in the fatigue process.Three significant design parameters,i.e.heat flux distribution,beam line incidence angle and beam spot drift position,were analyzed to estimate their influences on the fatigue life on the light-blocked component.The predicted results based on Smith-Watson-Topper (SWT) model provide reference data for future thermal fatigue tests.

关键词： design parameter changes thermal fatigue FEM SWT model

作者: W.L.Xiao H.B.Chen

作者单位: Key Laboratory Mechanical Behavior and Design of Materials,University of Science and Technology of China,Hefei,Anhui 230027,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 937-940

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）