Mapping methods for computationally efficient and accurate structural reliability
Abstract
The influence of mesh coarseness in the structural reliability is evaluated. The objectives are to describe the alternatives and to demonstrate their effectiveness. The results show that special mapping methods can be developed by using: (1) deterministic structural responses from a fine (convergent) finite element mesh; (2) probabilistic distributions of structural responses from a coarse finite element mesh; (3) the relationship between the probabilistic structural responses from the coarse and fine finite element meshes; and (4) probabilistic mapping. The structural responses from different finite element meshes are highly correlated.
- Publication:
-
Structural Integrity and Durability of Reusable Space Propulsion Systems
- Pub Date:
- May 1991
- Bibcode:
- 1991sidr.nasa..145S
- Keywords:
-
- Computational Grids;
- Finite Element Method;
- Probability Theory;
- Structural Analysis;
- Structural Reliability;
- Computerized Simulation;
- Convergence;
- Distribution Functions;
- Mathematical Models;
- Random Variables;
- Quality Assurance and Reliability