Vehicular supplemental restraint device simulation using finite element modeling
First Claim
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1. A method for modeling an inflatable supplemental restraint device for a vehicle, comprising the steps of:
- modeling the restraint device in a fully inflated state, using a finite element model;
reconfiguring the modeled restraint device from a fully inflated to a fully deflated and flattened configuration using data from the model of the fully inflated state in the finite element model;
using the results corresponding to the fully deflated and flattened configuration as an input to a finite element model to simulate continuous folding of the restraint device from its fully deflated and flattened configuration to a folded configuration;
comparing package dimensions of the modeled folded configuration to corresponding package dimensions of a housing for said restraint device; and
using the modeled folded configuration to model a fully inflated configuration of said supplemental restraint device.
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Abstract
A method and system for modeling an inflatable supplemental restraint device for a vehicle includes operating a simulation system according to a first step in which the restraint device is modeled in a fully inflated configuration using a finite element model. The modeled airbag is then deflated and flattened. The flattened airbag is subjected to simulated folding using a finite element model. Inputs drawn from the results of successive portions of the simulation are used in the later modeling steps.
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3 Claims
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1. A method for modeling an inflatable supplemental restraint device for a vehicle, comprising the steps of:
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modeling the restraint device in a fully inflated state, using a finite element model;
reconfiguring the modeled restraint device from a fully inflated to a fully deflated and flattened configuration using data from the model of the fully inflated state in the finite element model;using the results corresponding to the fully deflated and flattened configuration as an input to a finite element model to simulate continuous folding of the restraint device from its fully deflated and flattened configuration to a folded configuration; comparing package dimensions of the modeled folded configuration to corresponding package dimensions of a housing for said restraint device; and using the modeled folded configuration to model a fully inflated configuration of said supplemental restraint device. - View Dependent Claims (2, 3)
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Specification