TY - JOUR
T1 - Simulation of a rigid plate hit by a cylindrical hemi-spherical tip-ended soft impactor
AU - Jenq, S. T.
AU - Hsiao, F. B.
AU - Lin, I. C.
AU - Zimcik, D. G.
AU - Ensan, M. Nejad
N1 - Funding Information:
The authors would like to thanks the National Science Council (NSC), Taiwan, ROC and the National Research Council Canada (NRCC) for sponsoring this NSC-NRCC international collaborative project. The work sponsored by NSC was done under contract no. NSC-94-2212-E-006-013.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - This work is concerned with the dynamic impact response simulations of a soft model bird projectile striking a flat rigid panel. A hemi-spherical cylindrical tip-ended soft material was adopted to model a bird traveling with an incident velocity of 116, 197 and 253 m/s. The constitutive modeling of the soft impactor was studied. The diameter and the length of the impactor were 11.4 and 22.8 cm, respectively, and the weight of the impactor was 1.8 kg (i.e. 4 lb). Based on J. S. Wilbeck's AFML-TR-77-134's report, the material properties of the soft impactor was modeled to be similar to the properties of a real bird and the shear strength of the bird was neglected. The non-linear finite element code - LS-DYNA was used in this study to analyze the problem numerically. Three different formulation approaches, i.e. the Lagrangian (LAG), Eulerian (EUL) and the Arbitrary Lagrangian Eulerian (ALE) methods, were adopted in the present numerical analysis. Simulated dynamic pressure at the center of impact surface was computed based on three methods proposed. Simulated dynamic pressure versus time relationships were compared with Wilbeck's test result and also checked against the stable stagnation pressure for the present study. Good results were found with the use of the coupled-field ALE method to obtain the dynamic pressure evolution after impact initiated and also the stable stagnation pressure. The results based on the LAG and EUL methods were reported to be less accurate.
AB - This work is concerned with the dynamic impact response simulations of a soft model bird projectile striking a flat rigid panel. A hemi-spherical cylindrical tip-ended soft material was adopted to model a bird traveling with an incident velocity of 116, 197 and 253 m/s. The constitutive modeling of the soft impactor was studied. The diameter and the length of the impactor were 11.4 and 22.8 cm, respectively, and the weight of the impactor was 1.8 kg (i.e. 4 lb). Based on J. S. Wilbeck's AFML-TR-77-134's report, the material properties of the soft impactor was modeled to be similar to the properties of a real bird and the shear strength of the bird was neglected. The non-linear finite element code - LS-DYNA was used in this study to analyze the problem numerically. Three different formulation approaches, i.e. the Lagrangian (LAG), Eulerian (EUL) and the Arbitrary Lagrangian Eulerian (ALE) methods, were adopted in the present numerical analysis. Simulated dynamic pressure at the center of impact surface was computed based on three methods proposed. Simulated dynamic pressure versus time relationships were compared with Wilbeck's test result and also checked against the stable stagnation pressure for the present study. Good results were found with the use of the coupled-field ALE method to obtain the dynamic pressure evolution after impact initiated and also the stable stagnation pressure. The results based on the LAG and EUL methods were reported to be less accurate.
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M3 - Conference article
AN - SCOPUS:34748827557
SN - 0891-0138
VL - 51
JO - International SAMPE Symposium and Exhibition (Proceedings)
JF - International SAMPE Symposium and Exhibition (Proceedings)
T2 - SAMPE '06: Creating New Opportunities For The World Economy
Y2 - 30 April 2006 through 4 May 2006
ER -