A comparative study on the performance of meshless approximations and their integration

Share/Save/Bookmark

Quak, W. and Boogaard van den, A.H. and Gonzalez, D. and Cueto, E. (2011) A comparative study on the performance of meshless approximations and their integration. Computational Mechanics, 48 (2). pp. 121-137. ISSN 0178-7675

[img]
Preview
PDF
1122Kb
Abstract:The goal of this research is to study the performance of meshless approximations and their integration. Two diffuse shape functions, namely the moving least-squares and local maximum-entropy function, and a linear triangular interpolation are compared using Gaussian integration and the stabilized conforming nodal integration scheme. The shape functions and integration schemes are tested on two elastic problems, an elasto-plastic problem and the inf-sup test. The elastic computation shows a somewhat lower accuracy for the linear triangular interpolation than for the two diffuse functions with the same number of nodes. However, the computational effort for this interpolation is considerably lower. The accuracy of the calculations in elasto-plasticity depends to great extend on the used integration scheme. All shape functions, and even the linear triangular interpolation, perform very well with the nodal integration scheme and locking-free behavior is shown in the inf-sup test.
Item Type:Article
Copyright:© 2011 Springer
Faculty:
Engineering Technology (CTW)
Research Chair:
Research Group:
Link to this item:http://purl.utwente.nl/publications/77837
Official URL:http://dx.doi.org/10.1007/s00466-011-0577-6
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 277910