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Journal of Composite Materials
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Edge Stresses in a Composite Strip Subjected to Axial Temperature Gradients Part II: Evaluation of Numerical Results

Dwight W. Swett

Electro-Optical Systems, Hughes Aircraft Company, El Segundo, CA 90245

Geoffrey R. Shiflett

Department of Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453

In Part I of this paper, a combination of Airy stress functions and direct displacement functions was utilized to obtain the plane elasticity solution for the stresses and displacements in a multilayer laminated orthotropic strip subjected to a temperature gradient that is arbitrarily symmetric in the longitudinal direction. The solution is exact for the specific boundary conditions associated with satisfaction of zero slope of transverse displacement at the strip ends and shear traction free edges at the strip ends.

In Part II of this paper, numerical results are presented for several examples and compared to detailed finite element analyses for approximate zero edge slope and free edge boundary conditions. The results indicate the shear and peel stress concentrations and axial stress distributions for the boundary condition are in excellent agreement with the finite element analysis results for the zero edge slope case and correlate with the free edge boundary condition over a broad range of temperature gradient cases. This correlation with the free edge numerical analysis indicates the theoretical approach is feasible as a conceptual design tool for a reasonable range of free edge engineering problems.

Journal of Composite Materials, Vol. 31, No. 16, 1574-1592 (1997)
DOI: 10.1177/002199839703101602
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