ハイドロフォーム部材の圧潰特性における加工の影響 : 第1報,準静的3点曲げにおける検討

概要

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The importance of application of FEM to car crush has been increasing to evaluate the safety of cars and to reduce the cost of development expenses of cars. However, these analyses do not always correspond to the experiments because the analyses do not consider such effects of forming as residual stress, residual strain, and wall thinning that are caused by the manufacturing process. The purpose of this paper is to prove the necessity of analysis considering forming history of the manufacturing process on structural analyses. In order to investigate that, comparisons between analyses and experiments on hydroformed member in various conditions were carried out. Comparing analytical results with experimental one, crush load of the model that is used in this study could be more exactly predicted by considering the forming history. As the results, it is important to consider the forming history in order to estimate the crush characteristics accurately.曲げ衝撃負荷を受けるハイドロフォーミング部材の衝撃エネルギー吸収特性を評価するシミュレーション技術の精度を向上するために，部材成型プロセスの加工履歴の影響を評価する手法を確立した．
2002-05-25