Approximate free-edge stresses in an orthotropic laminated composite under uniaxial inplane loading
- Univ. of Dayton, OH (United States)
The classic problem of determining the stresses in the free-edge boundary region of a composite laminate under uniaxial inplane loading is addressed. Laminated plate theory including transverse shear deformation is utilized in obtaining an approximation of the interlaminar stresses throughout the boundary region of an orthotropic composite subjected to uniaxial inplane loading. In the analysis a quarter section of the laminate is treated as a plate fastened to a rigid foundation. The resulting inplane normal stress transverse to the load is modified by adding additional terms which assure that the appropriate boundary conditions at the free-edge are satisfied ply-by-ply. Interlaminar stresses are determined throughout the plate by integrating the equations of equilibrium from classical theory of elasticity in conjunction with the modified inplane stresses. Numerical results are compared to another approximation involving a higher order laminated plate theory which includes transverse normal strain in addition to transverse shear deformation.
- OSTI ID:
- 143556
- Report Number(s):
- CONF-930246--; ISBN 0-87339-251-5
- Country of Publication:
- United States
- Language:
- English
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