摘要
根据工字钢的几何形状和材料特性,采用ANSYS有限元软件建立了工字钢退火过程的热-结构耦合分析模型,并对3种退火工艺的温度场和应力场进行了模拟和分析。结果表明:相比去应力退火和再结晶退火,完全退火工艺的温度最高、热通量最小;去应力退火和再结晶退火可能导致材料内部应力积累,使工字钢的应力分布不均匀;完全退火后材料晶体结构发生了重排和再结晶,使工字钢的热应力和热应变显著减小,使用可靠性提高。
Based on the geometric shape and material properties of I-beams,a coupled thermal-structural analysis model of the annealing process of I-beams was established by using ANSYS finite element software,and the temperature field and stress field of three annealing processes were simulated and analyzed.The results showed that(a)compared with stress-relief annealing and recrystallization annealing,the full annealing was the highest in the temperature,and the lowest in the heat flux;(b)stress-relief annealing and recrystallization annealing processes might lead to the accumulation of internal stresses in the material,resulting in the uneven distribution of stress in Ibeam;(c)the crystal structure of the material underwent rearrangement and recrystallization after full annealing,resulting in a significant reduction in the thermal stress and thermal strain of the I-beam,and an improvement of reliability in use.
作者
杨智杰
宁晓骏
侯庆
周霜林
张杰
YANG Zhijie;NING Xiaojun;HOU Qing;ZHOU Shuanglin;ZHANG Jie(School of Architecture and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650500,China;Zhonggui Geoenvironmental Survey and Design Co.,Ltd.,Chongqing 401120,China;Chongqing Yiyuan Construction Engineering Co.,Ltd.,Chongqing 400060,China)
出处
《上海金属》
CAS
2024年第5期89-94,共6页
Shanghai Metals
关键词
工字钢
退火
热-结构耦合
有限元分析
热应力
I-beam
annealing
thermal structural coupling
finite element analysis
thermal stress
