Modelling factors of square tubes in high speed bending situations
Contribuinte(s) |
[Unknown] |
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Data(s) |
01/01/2007
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Resumo |
Accurate finite element crash simulations of side impact depend upon a thorough understanding of dynamic tube bending. There is a need to understand the dynamic bending mode of square sections (equivalent of automotive structural parts) to obtain a greater confidence in CAE. This work varied strain rate and material definitions, such as Cowper-Symonds vs Zerilli-Armstrong, as well as initial velocity and yield strength. The results show that most of the plastic work is done between strains rates of 30 ¿ 300/s and strains up to 0.3. Peak strain rates were marginally above 1000/s with maximum strain greater than 1. When the strain rate definition and material model were modified, it was shown that a higher yield stress produced a higher reaction force. These results would suggest that the strain rate sensitivity needs to be carefully identified for accurate crash simulations. <br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
SAE International |
Relação |
http://dro.deakin.edu.au/eserv/DU:30008139/rolfe-modellingfactors-2007.pdf http://www.google.com/url?sa=t |
Direitos |
2007, SAE International |
Tipo |
Conference Paper |