Accession Number:

ADA238322

Title:

Non-Algorithmic Issues in Automated Computational Mechanics

Descriptive Note:

Final rept. 1 Mar 1989-28 Feb 1991

Corporate Author:

COMPUTATIONAL MECHANICS CO INC AUSTIN TX

Report Date:

1991-04-30

Pagination or Media Count:

181.0

Abstract:

The general goal of the project was to study the feasibility of the development of an automatic environment for engineering design of aerospace structures, in particular for their analysis by the finite element method. Of particular interest were non-algorithmic issues related to automated decision making based on heuristics and expertise. In the first phase of work, the types of knowledge and decisions involved in the design process were studied, and computer technologies best suited for their automation were evaluated. These technologies include algorithmic procedures, knowledge based expert systems, neural networks, knowledge acquisition systems, etc. The main thrust of research in the project was focused on the development and extension of concepts related to automated computational mechanics, such as adaptive computational techniques, automated model and strategy selection, automated performance monitoring and quality assurance for the finite element analysis. These methods were implemented in an automated computational environment, based on full coupling of h-p adaptive finite element program with expert systems technology. Several examples of automated decision making in finite element analysis prove the feasibility and great practical potential of automated environments for design of aerospace structures. Based on the studies performed in the project, directions of further research and development in this area were identified.

Subject Categories:

  • Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE