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刚塑性有限元法是模拟热塑性变形的有效手段。本文介绍了可在工作站和微机上运行的三维热刚粘塑性有限元软件及其功能与特色，讨论了软件主要的理论依据和微机化过程。该软件可以进行加热和冷却过程中的温度场模拟，高温下金属塑性成形的速度场和温度场（包括上、下模具）的耦合计算、非稳态塑性成形过程分析；还可模拟和预测金属在热加工中的再结晶过程和内部组织的变化规律。应用所开发的软件，对中心压实法、高温镦粗、拔长、扩孔等三维锻造工艺进行了数值模拟。文章最后实验测定了ＪＴＳ锻造工艺的温度场和三维镦粗试件的晶粒度分布，实验值与模拟值的对比结果表明，数值模拟的结果是可靠的。
Rigid plastic finite element method is an effective method to simulate thermoplastic deformation. This paper introduces the 3D thermo-visco-plastic finite element software which can run on workstations and microcomputers, its functions and features, and discusses the software’s main theoretical basis and computerized process. The software can simulate the temperature field in the process of heating and cooling, the coupling of the velocity field and the temperature field (including the upper mold and the lower mold) of metal plastic forming under high temperature and the analysis of unsteady plastic forming process. The software can also simulate and predict the metal Recrystallization process in hot working and variation of internal organization. The developed software was used to simulate the three-dimensional forging process such as center compaction method, high temperature upsetting, long drawing and reaming. Finally, the temperature field of JTS forging process and the grain size distribution of the three-dimensional upsetting specimen were measured in the final experiment. The comparison between the experimental and simulation results shows that the numerical simulation results are reliable.