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A Shell-Beam Modeling Method for Crash Simulation of Thin-Walled Composite Tubes
Abstract
There are extensive studies tried to model composite material tubes under axial impact. However, very few of them is able to predict both failure morphologies and force-displacement responses of a crushing tube. In order to solve this problem, this study proposes a new modeling technique, the shell-beam method. Essentially, this method enhances shell elements with real out-of-plane properties with beam elements. Both one element tests and tube crash tests are performed to fully evaluate this method. An in-house material model, Enhanced Continuum Damage Mechanics (ECDM) model, is used in this study. It is proved that the shell-beam method is very effective in terms of conquering the defects, like instability, of some traditional elements.