✦ LIBER ✦
On the technique of shifting side nodes in isoparametric elements to impose arbitrary singularity
✍ Scribed by Qian Jun; Hasebe Norio
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 192 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0045-7949
No coin nor oath required. For personal study only.
✦ Synopsis
AbstractÐIt has been proved that stress and strain singularity does not exist in an 8-node isoparametric element by shifting mid-nodes to other positions, with the exception of a special case for one quarter position with r À1/2 singularity. It is also proven that stress and strain singularity does not exist in a 12node isoparametric element by shifting side nodes to other positions, except the special case of 1/27 and 8/27 positions with r À2/3 singularity. It is pointed out that it is not suitable to impose arbitrary singularity in isoparametric elements by simply shifting side nodes to assumed positions.