内加热器陶瓷保护套管的温度场和应力场数值模拟  

Numerical Simulation of Temperature and Stress Fields for Ceramic Sheath of Immersion Heater

作　　者：杨万利[1] 程皓[1] 李婷[1] 冯婧[1] 韩婷 史成斌 史忠旗 YANG Wanli;CHENG Hao;LI Ting;FENG Jing;HAN Ting;SHI Chengbin;SHI Zhongqi(Chaoma Technology Co.,Ltd.,Xi’an Aerospace Composites Research Institute,Xi’an 710025,China;School of Material Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安航天复合材料研究所超码科技有限公司,西安710025 [2]西安交通大学材料科学与工程学院,西安710049

出　　处：《硅酸盐通报》2020年第11期3649-3654,共6页Bulletin of the Chinese Ceramic Society

基　　金：陕西省技术创新引导专项基金(2019QYPY-088)。

摘　　要：通过内加热器保护套管的几何建模及初始边界条件的设定,采用ABAQUS有限元软件模拟了套管在金属铝液中的温度场和应力场。模拟结果表明,内加热器套管在插入熔液的瞬时,套管位于液面下(0~700 mm)的部分承受的应力集中最大(9.5×10^7 Pa),等效热应力最高。温度场稳定后,液面附近区域(700 mm)的热应力最大(2.6×10^7 Pa),也最容易在该位置失效,符合实验验证的结果。By the geometric modeling of the immersion heater sheath and the setting of initial boundary conditions,the temperature and stress fields of sheath in the molten aluminum were numerically analyzed by ABAQUS analysis system.The results of numerical simulation show that the maximum stress of immersion heater sheath is located in the area below metal level(0 mm to 700 mm)at the moment of insertion,and the Von Mises stress of 9.5×10^7 Pa at this area is highest.After the temperatnre field stabilizes,the thermal stress of immersion heater sheath in the area near the metal level(700 mm)is the largest(2.6×10^7 Pa),which is most easily to fail in this part.The conclusions are verified by the experiment results.

关 键 词：内加热器保护套管 数值模拟 温度场 应力场 

分 类 号：TQ174[化学工程—陶瓷工业]