사면체요소와 육면체요소를 이용한 삼차원 단조 시뮬레이션 결과의 비교 및 검증

Three-dimensional Forging Simulation with Tetrahedral Elements and Hexahedral Elements and their Comparison with Experiments

In this paper, we simulate a rotor pole cold forging process by a forging simulator with both tetrahedral and hexahedral element capabilities and compare the predictions obtained by the two approaches with the experiments. Hexahedral element capability runs manually while tetrahedral element capability runs automatically with help of an intelligent remeshing technique. It is shown that the tetrahedral element capability can give quite accurate solution if assisted by the intelligent remeshing technique even though the tetrahedral element itself is not theoretically and numerically clear.