Development of an enhanced elasto-plastic NMM-DDA with node-based element and its validation
-
- HASHIMOTO Ryota
- Department of Urban Management, Kyoto University (JSPS Research Fellow DC1)
-
- KOYAMA Tomofumi
- Faculty of Societal Safety Science, Kansai University
-
- KIKUMOTO Mamoru
- Institute of Urban Innovation, Yokohama National University
-
- MIMURA Mamoru
- Department of Urban Management, Kyoto University
Bibliographic Information
- Other Title
-
- 節点ベース要素で拡張した弾塑性NMM-DDAの開発と検証
Abstract
There are many historic masonry structures which collapsed due to deformation and/or failure of their foundation ground, and then, it is demanded to investigate the deterioration mechanisms and the rational restoration methods based on the geotechnical engineering. In this paper, NMM-DDA (coupled Numerical Manifold Method and Discontinuous Deformation Analysis), one of the discontinuum based numerical methods, was enhanced and a method to simulate the deformations of the composite structures of soils and discontinuous masonry stones was developed. Firstly, formulation of the elasto-plastic NMM-DDA which incorporates elasto-plastic constitutive laws into incremental form of equation of motion was shown. Then, as a method to avoid volumetric locking in conventional NMM-DDA, which adopts constant strain triangle element, application scheme of node-based uniform strain element was also described. Finally, developed method was applied to some fundamental boundary value problems such as beam bending problem and bearing capacity problems, and the applicability of the new method was examined by comparing the simulation results with theoretical solutions.
Journal
-
- Japanese Geotechnical Journal
-
Japanese Geotechnical Journal 11 (2), 163-177, 2016
The Japanese Geotechnical Society
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001205257360768
-
- NII Article ID
- 130005161617
-
- ISSN
- 18806341
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed
