140 research outputs found
An Elasto-Plastic Stress Analysis in a Polymer–Matrix Composite Beam Supported from Two Ends under Transverse Linearly Distributed Load by Use of Anisotropic Elasticity Theory
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An Elastic-Plastic Stress Analysis of Woven Ni-Cr Reinforced Thermoplastic Composite Cantilever Beam
No full textAn Elasto-Plastic Stress Analysis in a Polymer Matrix Composite Beam of Arbitrary Orientation Subjected to Transverse Linearly Distributed Load
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On the Elastic Constants of Plane Orthotropic Elasticity
No full textThe four independent material parameters of plane orthotropic elasti-city are introduced as the effective stiffness, the effective Poisson ratio, the stiffness ratio and the shear parameter. It is proved that stress boundary value problems with zero resulting force on internal contours lead to stress fields that are independent of the effective stiffness and the effective Poisson ratio, and a general transformation is described which is equivalent to a change of the stiffness ratio. These properties suggest the importance of the remaining shear parameter, that has the interesting property of being invariant with respect to a 90 degree rotation of the principal axes of the material. 1
Polynomial stress functions of anisotropic plane problems and their applications in hybrid finite elements
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