The Effect of Graded Strength on Damage Propagation in Continuously Nonhomogeneous Materials
Source abstract
Abstract
A damage model developed by Johnson and Holmquist is implemented into a dynamic finite element code. This is then used to study the effect of grading of the phenomenological damage parameters on the propagation of damage through the material. The numerical results for two one-dimensional example problems with different boundary conditions are presented, wherein the effect of a gradient in the intact strength of the material on damage propagation is studied. The results show that introducing different strength gradients can alter the location of the site of maximum damage. This may have important implications in the design of impact resistant materials and structures.
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Research context
OpenAlex topics: Numerical methods in engineering · Rock Mechanics and Modeling · Composite Material Mechanics
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Affiliations
Department of Mechanical Engineering, And Center for Composite Materials, University of Delaware, Newark, DE 19716
Weapons and Materials Research Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD 21005
References (11)
Show source-provided references
1. Santare, M. H., and Lambros, J., 2000, “Use of a Graded Finite Element to Model the Behavior of Nonhomogeneous Materials,” ASME J. Appl. Mech., 67(4), pp. 819–822.10.1115/1.1328089 ↗
2. Kim, J. H., and Paulino, G. H., 2002, “Isoparametric Graded Finite Elements for Nonhomogeneous Isotropic and Orthotropic Materials,” ASME J. Appl. Mech., 69(2), pp. 502–514.10.1115/1.1467094 ↗
3. Santare, M. H., Thamburaj, P., and Gazonas, G. A., 2002, “The Use of Graded Finite Elements in the Study of Elastic Wave Propagation in Continuously Nonhomogeneous Materials,” Int. J. Solids Struct., accepted for publication.10.1016/S0020-7683(03)00315-9 ↗
4. Boyd, J. G., Costanzo, F., and Allen, D. H., 1993, “A Micromechanics Approach for Constructing Locally Averaged Damage Dependent Constitutive Equations in Inelastic Composites,” Int. J. Damage Mech., 2, pp. 209–228.10.1177/105678959300200303 ↗
5. Budiansky, B., and O’Connell, R. J., 1976, “Elastic Moduli of a Cracked Solid,” Int. J. Solids Struct., 12, pp. 81–97.10.1016/0020-7683(76)90044-5 ↗
6. Aboudi, J., and Benveniste, Y., 1987, “The Effective Moduli of Cracked Bodies in Plane Deformations,” Eng. Fract. Mech., 26(2), pp. 171–184.10.1016/0013-7944(87)90195-0 ↗
7. Santare, M. H., Crocombe, A. D., and Anlas, G., 1995, “Anisotropic Effective Moduli of Materials With Microcracks,” Eng. Fract. Mech., 52(5), pp. 833–842.10.1016/0013-7944(95)00059-5 ↗
8. Fahrenthold, E. P. , 1991, “A Continuum Damage Model for Fracture of Brittle Solids Under Dynamic Loading,” ASME J. Appl. Mech., 58, pp. 904–909.10.1115/1.2897704 ↗
9. Johnson, G. R., and Holmquist, T. J., 1992, “A Computational Model for Brittle Materials Subjected to Large Strains, High Strain Rates and High Pressures,” Shock Wave and High-Strain-Rate Phenomena in Materials, M. A. Meyers, L. E. Murr, and K. P. Staudhammer, eds., Marcel Dekker, New York.
10. Johnson, G. R., and Holmquist, T. J., 1994, “An Improved Computational Model for Brittle Materials,” High Pressure Science and Technology, S. C. Schmidt, J. W. Shaner, G. A. Samara, and M. Ross, eds., American Institute of Physics Press, New York, pp. 981–984.10.1063/1.46199 ↗
11. Gazonas, G. A., 2002, “Implementation of the Johnson-Holmquist II (JH2) Constitutive Model Into DYNA3D,” ARL-TR-2699, Army Research Laboratory, Aberdeen, MD.10.21236/ADA402347 ↗