无网格SPH法在金属镦粗成形中的应用
The application of smooth particle hydrodynamic in metal forging
朱蒙蒙，谢桂兰，曹尉南，董文正
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作者单位：湘潭大学
中文关键字：金属体积成形；数值模拟；无网格法；SPH
英文关键字：Metal bulk forming；Numerical simulation；Meshless method；SPH
中文摘要：本文基于无网格SPH法对三维金属锻造成形进行模拟。建立了无网格SPH法镦粗成形的模型并进行数值模拟，所得结果与传统有限元法进行对比，结果表明无网格SPH法在金属体积成形中的有效性。解决了有限元方法应用于金属成形中由于网格畸变而造成的网格重构和精度降低的问题，具有一定的工程参考价值。
英文摘要： The 3D metal forging model based on SPH method is established and simulated herein. Compared with FEM, numerical results show that SPH method is effective in simulation of metal bulk forming. It avoids remeshing and impairing numerical precision for drastic distortion of mesh in finite element method simulation of metal forming and has certain reference value for engineering.