Improved free vibration analysis of stiffened plates by dynamic element method
Abstract
A finite dynamic element discretization, employing higher order dynamic correction terms is used to analyse the free inplane vibration of stiffened plates. A nodeless dynamic line element is used as the stiffener model and is derived from the plate shape functions. Such a discretization leads to frequency dependent stiffness and inertia matrices. The associated quadratic eigenvalue problem is solved by an efficient generalized algorithm eigenvalue problem is solved by an efficient generalized algorithm based on a simultaneous iteration scheme. The results show the economic improvement for a given accuracy using dynamic element discretization. The related computer code is written in FORTRAN for the APOLLO-3000 system.
- Publication:
-
Computers and Structures
- Pub Date:
- July 1994
- Bibcode:
- 1994CoStr..52..259M
- Keywords:
-
- Computer Techniques;
- Diagnosis;
- Dynamic Structural Analysis;
- Finite Element Method;
- Free Vibration;
- Mathematical Models;
- Plates (Structural Members);
- Structural Analysis;
- Vibration Mode;
- Algorithms;
- Computerized Simulation;
- Dynamic Response;
- Eigenvalues;
- Eigenvectors;
- Fortran;
- Iterative Solution;
- Structural Mechanics