On using different finite elements with an automatic adaptive refinement procedure for the solution of 2-D stress analysis problems
✍ Scribed by C. K. Lee; R. E. Hobbs
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 439 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0029-5981
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✦ Synopsis
A series of numerical tests is carried out employing some commonly used finite elements for the solution of 2-D elastostatic stress analysis problems with an automatic adaptive refinement procedure. Different kinds of elements including Lagrangian quadrilateral and triangular elements, serendipity quadrilaterals, incompatible elements and hybrid elements have been tested. It is found that for a general problem involving compressible material and when a moderate accuracy of the final solution is sought, the nine-node Lagrangian (L9) element will be the most effective element, while when an extremely accurate solution is needed, higher order Lagrangian quadrilaterals or triangles will be a suitable choice. However, if only linear elements are available, the well known 5 I linear hybrid element is the best choice. 1997