We consider methods for adaptive updating of computational meshes during incremental loading of non-linear shell and solid structures. In particular, we focus on updating methods where the initial topology of the mesh is maintained. The movement of the mesh (the convective step) is decoupled from th
A case based reasoning approach to mesh specification for adaptive finite element analysis
β Scribed by Neil Hurley
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 610 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0378-4754
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β¦ Synopsis
In this paper the application of an Artificial Intelligence paradigm called Case Based Reasoning (CBR) to the issue of mesh specification for adaptive finite element analysis is discussed. It is argued that CBR can provide greater flexibility than the traditional rule-based approach, permitting solutions of problems to be proposed even when domain knowledge is lacking. Moreover, CBR allows the exploitation the numerical knowledge extracted by a postetiori analysis of previously solved problems, encompassing a learning mechanism in a natural manner. We believe that the system proposed here can provide a powerful problem solving strategy, as well as providing a means of knowledge acquisition. Ultimately, coupling this approach with a rule-base can provide a problem solving environment for tackling complex real-world problems.
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This paper is concerned with an efficient novel algorithmic formulation for wrinkling at finite strains. In contrast to previously published numerical implementations, the advocated method is fully variational. More precisely, the parameters describing wrinkles or slacks, together with the unknown d