Crash Modeling of High-Pressure Wet Wound Composite Vessels Adam Opel AG - General Motors Company

Format:

Conference/Event

Author/Creator:

Fell, Fell, author.

Contributor:

Gama, Bazle

Kang, Sang-Guk

Schuetz, Thorsten

Schultheis, Valentin

Conference Name:

SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Limitations of fossil fuels and concerns surrounding globalwarming favor the introduction of new powertrain concepts withhigher efficiency and low greenhouse gas emissions. Fuel cellvehicles offer the highest potential for sustainable mobility inthe future. One major component of fuel cell vehicles is thehydrogen storage system. The most-used approach is to storehydrogen in carbon-fiber-reinforced plastic (CFRP) vesselsmanufactured by a filament-winding process with an operatingpressure up to 70 MPa (hereafter referred as H₂ vessel). Accurateand reliable failure prediction of such thick composite structureswith numerical methods in case of impact events is important.The objective of this paper is the evaluation of the commercialfiber-reinforced plastics material model MAT162 in LS-DYNA todescribe both the onset and the progression of damage of the H₂vessel. MAT162 has the capability of modeling progressive damage ofcomposites. It is based on Hashin's quadratic failure criteriaand Matzenmiller's progressive damage model in terms of damagevariables, and it is able to discern various composite failuremodes.Based on the introduced comprehensive equation set of MAT162, aconsistent set of test procedures and the associated compositespecimens are defined to quantify the material properties which areneeded for solving the equations. The properties quantify thenon-isotropic stress-strain relationship, the non-isotropicstrength as well as continuum damage theory-related values. Thetest procedures cover ASTM standardized tests as well asnon-standardized tests. The material properties are either directlymeasured or quantified by calibration simulations using MAT162.Finally, a quasi-static punch test using the cylindrical part ofthe vessel with a representative fiber layup and a comparablecomposite thickness derived from a real hydrogen storage vessel isreported in terms of strain, displacement, load, and damagepropagation to validate the MAT162 FE crash model

Notes:

Vendor supplied data

Publisher Number:

2011-01-0016

Access Restriction:

Restricted for use by site license