Classification and analysis of tube hydroforming processes with respect to adaptive FEM simulations

摘要

A classification of tube hydroforming (THF) processes based on sensitivity to loading parameters hasrnbeen suggested. Characteristics of the classification have been analyzed in terms of failure mode, dominant loadingrnparameters and their working windows. It was discussed that the so called pressure dominant THF process is thernmost difficult process for both simulation in FEM analysis and practical operation in real manufacturing situation.rnTo effectively find out the optimum loading path for pressure dominant THF process, adaptive FEM simulationrnstrategies are mostly needed.