Finite element analysis program for shells of revolution - ISTRAN/SR. IV - Linear elastic dynamic analysis
Abstract
The computational capabilities available in the current version of ISTRAN/SR for stress analysis of shells of revolution have been described previously. This report describes the linear elastic dynamic analysis of shells of revolution under axisymmetric and asymmetric loadings. The shell, idealized as a curved element and cubic function for all displacements, is used. Three solution methods, which can be employed for the linear dynamic analysis, are possible - direct integration method, mode superposition method, and spectrum analysis method. Each method involves a numerical method which must be formulated in effective form for computer implementation - solution of linear equations, evaluation of eigenvalues and eigenvectors, and step-by-step numerical integration. In this program, the skyline method is employed for the solution of linear equations, and the subspace method and the determinant search method are employed for eigenproblem.
- Publication:
-
Ishikawajima Harima Engineering Review
- Pub Date:
- March 1980
- Bibcode:
- 1980IHERv..20...79C
- Keywords:
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- Cylindrical Shells;
- Dynamic Structural Analysis;
- Elastic Shells;
- Finite Element Method;
- Linear Equations;
- Spherical Shells;
- Displacement;
- Dynamic Loads;
- Equations Of Motion;
- Load Distribution (Forces);
- Numerical Integration;
- Shallow Shells;
- Fluid Mechanics and Heat Transfer