TY - GEN
T1 - Improvements to dry fabric modeling for ballistic mitigation systems
AU - Deivanayagam, A.
AU - Mobasher, Barzin
AU - Rajan, Subramaniam
PY - 2012
Y1 - 2012
N2 - This paper focuses on improvements to modeling dry fabric-based systems widely used in propulsion engine containment systems. Simulations of fabrics under impact using finite elements provide valuable insight into the mechanics of fabric behavior and its energy absorption. In our model, the fabric is treated as an equivalent continuum model composed of thin shell elements. The fabric of choice is Kevlar 49 whose behavior is characterized using uniaxial quasi-static and high strain rate tension tests, picture frame tests and friction tests. test results are used determine the material properties and to build the material and finite element models. The constitutive model is programmed as a user-defined material model in LS-DYNA. Simulations of a suite of ballistic impact tests are models using both deterministic and probabilistic (based on the Weibull distribution of strength) approaches and the results are compared against experimental results.
AB - This paper focuses on improvements to modeling dry fabric-based systems widely used in propulsion engine containment systems. Simulations of fabrics under impact using finite elements provide valuable insight into the mechanics of fabric behavior and its energy absorption. In our model, the fabric is treated as an equivalent continuum model composed of thin shell elements. The fabric of choice is Kevlar 49 whose behavior is characterized using uniaxial quasi-static and high strain rate tension tests, picture frame tests and friction tests. test results are used determine the material properties and to build the material and finite element models. The constitutive model is programmed as a user-defined material model in LS-DYNA. Simulations of a suite of ballistic impact tests are models using both deterministic and probabilistic (based on the Weibull distribution of strength) approaches and the results are compared against experimental results.
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U2 - 10.1061/9780784412190.138
DO - 10.1061/9780784412190.138
M3 - Conference contribution
AN - SCOPUS:84874279076
SN - 9780784412190
T3 - Earth and Space 2012 - Proceedings of the 13th ASCE Aerospace Division Conference and the 5th NASA/ASCE Workshop on Granular Materials in Space Exploration
SP - 1275
EP - 1284
BT - Earth and Space 2012 - Proceedings of the 13th ASCE Aerospace Division Conference and the 5th NASA/ASCE Workshop on Granular Materials in Space Exploration
PB - American Society of Civil Engineers (ASCE)
T2 - 13th Biennial ASCE Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments, Earth and Space 2012 and the 5th NASA/ASCE Workshop on Granular Materials in Space Exploration
Y2 - 15 April 2012 through 18 April 2012
ER -