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Trends in Applied Sciences Research
  Year: 2006 | Volume: 1 | Issue: 4 | Page No.: 386-401
DOI: 10.3923/tasr.2006.386.401
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A Multi-layer Cylindrical Shell Under Electro-thermo-mechanical Loads

K. Jayakumar, D. Yadav and B. Nageswara Rao

Utilizing the stress formulation approach a closed-form solution is obtained for a long multi-layer cylindrical shell subjected to electro-thermo-mechanical loads. The present analytical solution holds good to examine the elastic behaviour of laminated composite shells with anisotropic piezoelectric layers acting as sensor and actuator under electro-thermo-mechanical loads. Standard finite elements are not adequate for modelling of the incompressible nature of the solid propellant grains in rocket motors. Utilizing MSC/MARC© software, finite element analysis has been carried out on a three-layered (solid propellant grain/insulation/metallic casing) cylindrical shell subjected to thermal and internal pressure loads. The structure is idealized using the eight node quadrilateral isoparametric Hermann element for incompressible materials like propellant grain and insulation and regular elements for casing material. The finite element analysis results are found to be in good agreement with the present closed-form solution. This analytical solution can serve as benchmark to finite element solutions. Stress analysis has also been carried out on a three-layer cylindrical shell to examine the piezoelectric effects of one of the layers as composed of piezoelectric layers.
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How to cite this article:

K. Jayakumar, D. Yadav and B. Nageswara Rao , 2006. A Multi-layer Cylindrical Shell Under Electro-thermo-mechanical Loads. Trends in Applied Sciences Research, 1: 386-401.

DOI: 10.3923/tasr.2006.386.401






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