Thermal stresses and deformations in composite thin-walled and thick-walled tubes and shells
First, thermal twist of thin-walled tubes made of hybrid laminates and maximization of the thermal twist rate are considered. The twist rate involved both material and geometric parameters. The coefficient of thermal shear, which is a material property, and the cross-sectional geometry of the tube, which is a geometric property, are both optimized keeping the hygrothermal degradation of the material and the change in the torsional stiffness of the tube to a minimum. Next, stresses and deformations due to combined and thermal loads in thick-walled composite cylinders are examined. An elasticity solution is used to calculated radial stresses and deformations. Finally, stresses and deformations in spherical composite shells subject to internal pressure, and thermal loads are studied in two sections: in the first, spherical shells made of balanced laminates are considered, and membrane stresses and deformations are calculated. In the second, a bending theory for composite spherical shells made of antisymmetric laminates with infinitely many plies is developed, and stresses due to edge loads are calculated.
- Research Organization:
- Rensselaer Polytechnic Inst., Troy, NY (United States)
- OSTI ID:
- 6916455
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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