On a first-order shear-deformation theory for laminated anisotropic shells and plates
Shear-constitutive relations for a first-order shear deformation theory (1st SDT) of laminated anisotropic shells and plates are formulated following Mindlin's procedure for homogeneous, isotropic plates. Because thickness-shear motions for laminated anisotropic thickness profiles may not be polarized in planes normal to the reference surface, the concept of generalized principal shear planes is introduced. These planes are established by a least-squares minimization of the out-of-plane motions of infinitely long thickness-shear waves based on an elasticity analysis of the profile. Typical shear rigidities for a variety of laminated composite and sandwich profiles are given. Furthermore, an extensive parametric study is presented to assess the modeling capability of these shear constitutive relations in a class of laminated composite and sandwich cylinders. Results based on linear three-dimensional elasticity theory as well as classical theory results are also given.
- Research Organization:
- California Univ., Los Angeles, CA (United States)
- OSTI ID:
- 5273884
- Country of Publication:
- United States
- Language:
- English
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