Numerical verification of a procedure for calculation of elastic constants in microcracking composite laminates

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Journal of Composite Materials; (United States)

DOI:https://doi.org/10.1177/002199839202601701· OSTI ID:6307735

Gudmundson, P; Ostlund, S ^[1]

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1. Swedish Inst. of Composites, Pitea (Sweden)

The accuracy of the Gudmundson and Ostlund (1992) method for the calculation of thermoelastic constants in composite laminates with matrix cracks is verified by comparing the Gudmundson and Ostlund theory with three-dimensional finite element calculations of cracked thick (Theta, -Theta)M glass fiber reinforced epoxy laminates for a wide range of different matrix crack densities. Results indicate that the Gudmundson and Ostlund theory (which is based solely on ply property data and matrix crack densities), in combination with the theory for infinite crack densities, covers all ranges of crack densities with a very good accuracy. The simple procedure is applicable to general 2D and 3D laminates of arbitrary layups and yields all components of the stiffness tensor. 17 refs.

• OSTI ID: 6307735
• Journal Information: Journal of Composite Materials; (United States), Journal Name: Journal of Composite Materials; (United States) Vol. 26:17; ISSN JCOMBI; ISSN 0021-9983
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
COMPOSITE MATERIALS
COMPUTERIZED SIMULATION
CRACK PROPAGATION
CRACKS
ELASTICITY
EXPANSION
MATERIALS
MATHEMATICS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NUMERICAL ANALYSIS
NUMERICAL SOLUTION
SIMULATION
TENSILE PROPERTIES
THERMAL EXPANSION
THERMOELASTICITY