摘要
提出一种基于临界平面法的塔筒门洞焊缝多轴疲劳寿命预测方法,在其满足极限强度的前提下,以临界面上的最大主应力为基础,结合多轴计数法和Miner线性累积损伤理论,应用FESAFE多轴疲劳算法对门洞焊缝进行疲劳寿命分析。结果表明:塔筒结构满足设计要求,塔筒门洞的最危险位置位于门洞内壁焊趾处,与实际情况相符;验证了该方法的可行性和有效性。
A multi-axial fatigue life prediction method for the welding position of tower＇s door based on an critical plane method was proposed in this paper. Under the precondition of satisfying the limit strength, fatigue life prediction of tower door＇ s welding method and Min position using multi-axial fatigue algorithm in FESAFE software, based on the multi-axial counting er damage theory, is analyzed with the consideration of the maximum principal stress on the critical plane. The feasibility and effectiveness of this method is proved in this paper, and it also shows that the most dangerous position of tower＇ s door is located in the weld toe of door＇ s inner wall, which conforms to the fact of industrial field.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第5期1415-1420,共6页
Acta Energiae Solaris Sinica
基金
内蒙古自然科学基金(2014MS0514)
内蒙古"草原英才"工程
关键词
塔筒门洞焊缝
多轴疲劳寿命预测
临界平面法
极限强度分析
tower door＇s welding
multi-axial fatigue life prediction
critical plane method
limit strength analysis
