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Modelling Factors of Square Tubes in High Speed Bending Situations
Technical Paper
2007-01-0887
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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.
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Authors
Citation
Collins, P., Mullins, J., Rolfe, B., and Hodgson, P., "Modelling Factors of Square Tubes in High Speed Bending Situations," SAE Technical Paper 2007-01-0887, 2007, https://doi.org/10.4271/2007-01-0887.Also In
CAD/CAM/CAE Technology, Digital Modeling, Virtual Development and Engineering
Number: SP-2072; Published: 2007-04-16
Number: SP-2072; Published: 2007-04-16
References
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