A Framework for 3-D Nonlinear Modeling of Thick-Section Composites
Research and development rept.
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD SHIP MATERIALS ENGINEERING DEPT
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An architecture is proposed for three-dimensional nonlinear material modeling of thick-section composite laminates, which may have thicknesses ranging from 14 in. up to several inches. In this thickness range, there is very little applications-related experience or experimental information available the potential effects of out-of-plane stresses and strains on material properties and behavior are therefore of great concern. The material is intended to be used as a component of a standard finite element structural analysis package this places severe practical limits on material model complexity. The model consists of two main components a laminamicro-model containing fiber and matrix elements and a simplified unit-cell analysis and a sublaminate model based on a 3D lamination theory which enforces equilibrium of out-of-plane stresses.
- Laminates and Composite Materials