基于Shell-Solid单元混合建模技术的焊接数值模拟方法  

A welding numerical simulation method based on shell-solid element hybrid modeling technology

作　　者：李陈峰[1,2] 王庭策 刘葳 蔡庆港 董森 周学谦 LI Chenfeng;WANG Tingce;LIU Wei;CAI Qinggang;DONG Sen;ZHOU Xueqian(College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;International Joint Laboratory of Naval Architecture and Offshore Technology between Harbin Engineering University and Lisbon University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]船舶与海洋工程技术教育部国际合作联合实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2022年第2期181-187,共7页Journal of Harbin Engineering University

基　　金：黑龙江省自然科学基金项目(LH2020E078);国家自然科学基金项目(52171305).

摘　　要：针对焊接数值模拟的体单元模型计算效率低和壳单元模型计算精度低的问题,本文提出了一种焊接过程数值模拟的Shell-Solid单元混合建模方法。以平板对接焊为例,分别采用Shell单元、Solid单元和Shell-Solid单元混合建模,开展了焊接温度场和结构热力耦合响应的数值模拟,对比分析了温度场、应力场及计算效率。结果表明:混合模型既保证了焊接温度场和结构响应的计算精度,又保证了计算效率,是一种值得深入研究的焊接模拟建模方法。This study developed a hybrid shell-solid element modeling method for numerical simulations of welding processes to overcome the challenges of low efficiency in solid element models and low precision in shell element models.The shell element model,solid element model,and shell-solid hybrid model were used to simulate welding temperature fields,and thermal-coupled responses of structures,and the computational efficiency of temperature and stress fields were compared and analyzed.The shell-solid element hybrid model not only accurately calculated welding temperature fields and structural responses but was also efficient.This welding simulation modeling method represents a topic for further study.

关 键 词：焊接模拟 Shell-Solid单元混合建模 双椭球热源模型 热力耦合 温度场 应力场 计算效率 计算精度 

分 类 号：U663.2[交通运输工程—船舶及航道工程]