Accession Number:

ADA232973

Title:

A Framework for 3-D Nonlinear Modeling of Thick-Section Composites

Descriptive Note:

Research and development rept.

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD SHIP MATERIALS ENGINEERING DEPT

Personal Author(s):

Report Date:

1990-10-01

Pagination or Media Count:

59.0

Abstract:

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.

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE