Numerical study of damage growth in particulate composites
Abstract
A numerical study was conducted to simulate and predict damage initiation and growth around the crack tip in particulate composite specimens made of hard particles embedded in a soft rubber-like matrix material. Therefore, damage evolution in the matrix material around crack tips was investigated. The progressive damage was modeled using a micro/macro-approach which combined two levels of analyses like the micro-level and the macro-level analyses. Damage description was undertaken at the microlevel using a simplified three-dimensional unit-cell model and an isotropic continuum damage theory. The numerical study examined both thin and thick specimens with a short or long edge crack to understand the effects of specimen thickness and crack size on the damage initiation, growth, and saturation. Numerical results were compared with experimental data.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
Modeling of crack initiation and growth in solid rocket propellants using macromechanics and micromechanics theories
Lee, James H. (Monterey, California. Naval Postgraduate School, 1996-09);Modeling and simulation of crack initiation and propagation in solid rocket propellant materials were conducted using both the macromechanics approach and the micro/macromechanics approach. Due to their composition, the ... -
Effect of initial imperfections of the response of cylinders to underwater explosion
Hooker, Donald T. (Monterey, California. Naval Postgraduate School, 1993-12);Presently, the United States Navy is searching for an improved method to predict the damage to a ship or underwater structure that results from an underwater explosion. One method of predicting this damage is through the ... -
Numerical study for Global Detection of cracks embedded in beams
Lipsey, Stephen A. (Monterey, California: Naval Postgraduate School, 1999-12);Damage reduces the flexural stiffness of a structure, thereby altering its dynamic response. Considerable effort has been put into obtaining a correlation between the changes in modal parameters and the location and amount ...