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Continuos Failure Prediction Model for Nonlinear Load Paths in Successive Stamping and Crash Processes
Technical Paper
2001-01-1131
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
The validity of numerical simulations is still limited by the unknown failure of materials when nonlinear load paths in successive stamping and crash processes occur. Localized necking is the main mechanism for fractures in ductile sheet metal. The classical forming limit curve (FLC) is limited to linear strain paths. To include the effects of nonlinear strain paths a theoretical model for instability (algorithm CRACH) has been used. The algorithm has been developed on the basis of the Marciniak model [8]. The calibration and validation of this approach is done by a set of multistage experiments under static and dynamic strain rates for a mild steel.
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Citation
Dell, H., Gese, H., Keßler, L., Werner, H. et al., "Continuos Failure Prediction Model for Nonlinear Load Paths in Successive Stamping and Crash Processes," SAE Technical Paper 2001-01-1131, 2001, https://doi.org/10.4271/2001-01-1131.Also In
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