热处理有限元求解器MetalX的改进与优化  

Improvement and optimization of finite element solver MetalX for heat treatment

作　　者：吕越 徐骏[1,2,3] 王婧[1,2] 郭正洪[1,2,3] 顾剑锋 卢伟炜[5] LÜYue;XU Jun;WANG Jing;GUO Zheng-hong;GU Jian-feng;LU Wei-wei(School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Materials Modification and Modeling,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai Jiao Tong University,Shanghai 200240,China;Materials Genome Initiative Center,Shanghai Jiao Tong University,Shanghai 200240,China;CITIC Pacific Special Steel TAILAI Mould Technology Co Ltd,Ningbo 315000,China)

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]上海交通大学材料改性与数值模拟研究所,上海200240 [3]上海交通大学上海市激光制造与材料改性重点实验室,上海200240 [4]上海交通大学材料基因组联合研究中心,上海200240 [5]中特泰来模具技术有限公司,浙江宁波315000

出　　处：《材料热处理学报》2025年第1期215-224,共10页Transactions of Materials and Heat Treatment

基　　金：国家重点研发计划资助项目(2023YFB3408000)。

摘　　要：自主发展的热处理有限元求解器MetalX能够独立完成热处理过程多场非线性耦合计算,但在扩展性、计算效率方面与国外商业软件相比仍有一定差距。为此,采用面对对象技术、单指令多数据流(SIMD)技术与准线展开法分别对MetalX求解器的代码结构、单元矩阵计算与弹塑性本构算法提出了改进与优化的方法。同时,构建了4种单元矩阵的乘法以及18CrNiMo7-6钢试样淬火模拟的案例,分别对改进后单元矩阵的计算效率与弹塑性本构算法的精确度进行了验证。结果表明:SIMD技术能够有效提升单元矩阵的计算效率,在实际工程应用时可以获得近3倍的加速。同时,在热处理应力场求解中,准线展开法相比MetalX求解器原先采用的径向回归法,取得了更好的求解效果,能够达到与主流商业有限元软件相当的计算精度。The finite element solver MetalX for heat treatment can independently perform multi-physics nonlinear coupling solution in the heat treatment process,but there is still a certain gap in scalability and computational efficiency compared to foreign commercial software.Therefore,methods for improving and optimizing the code structure,element matrix calculation,and elastic-plastic constitutive algorithm of MetalX solver were proposed using object-oriented technology,single instruction multiple data(SIMD)technology,and mean normal method,respectively.Meanwhile,the efficiency of the improved element matrix calculation and the accuracy of the elastic-plastic constitutive algorithm were verified through the multiplication of 4 kinds of element matrices and the simulation of the quenching process of 18CrNiMo7-6 steel sample.The results show that the SIMD technology can effectively improve the computational efficiency of element matrices,and can achieve nearly three times acceleration in practical engineering applications.In solving the stress field of heat treatment,the mean normal method has achieved better solving results compared to the radial return method originally used by the MetalX solver,and can attain calculation accuracy comparable to mainstream commercial finite element software.

关 键 词：热处理 有限元求解器 多场耦合分析 非线性分析 

分 类 号：TG156[金属学及工艺—热处理]