摘要
用有限元分析软件对加层钢无孔焊接节点A和大孔焊接节点B进行拟静力载荷模拟分析,研究其焊接节点性能及承载力。结果表明:低周反复载荷下A应力主要集中在靠近焊缝的翼缘接触处,B边缘应力最大,易产生裂缝,甚至脆断;在梁下翼缘焊缝长度为160 mm时,B的残余应力高于A;A滞回曲线呈饱满梭形,无捏合,滞回面积大,B的饱满度和滞回面积都较小;A的塑性转角占总转角的百分比比B高25%,A承载力更好;相同载荷等级下,A的抗变形、各延性指标、耗能均优于B。
The quasi-static load simulation analysis of laminated steel non hole welded joint A and large hole welded joint B wascarried out with finite element analysis software to study the performance and bearing capacity of their welded joints. The resultsshow that under low cyclic loading,the A stress is mainly concentrated at the flange contact near the weld,and the B edge stressis the largest,which is easy to produce cracks and even brittle fracture. When the weld length of the lower flange of beam is 160 mm,the residual stress of B is higher than that of A. The hysteresis curve of A is full shuttle shape without kneading,and thehysteresis area is large,while the fullness and hysteresis area of B are both small. The percentage of plastic rotation angle of A inthe total rotation angle is 25% higher than that of B,and the bearing capacity of A is better. Under the same load level,thedeformation resistance,ductility index and energy consumption of A are better than those of B.
作者
胡玉魁
HU Yukui(Institute of Technology,Fuzhou University of International Studies and Trade,Fuzhou 350202,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2022年第2期114-118,共5页
Ordnance Material Science and Engineering
关键词
加层钢
焊接节点
拟静力
载荷
低周反复
laminated steel material
welding joint
pseudo static
load
low cycle repetition
