|
| Numerical simulation on 3D meso-contact mesh of concrete and CT test verification |
| Received:March 05, 2009 Revised:March 30, 2010 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201101022 |
| KeyWord:concrete random aggregate model contact mesh model stress displacement |
| Author | Institution |
| 党发宁 |
西安理工大学 岩土工程研究所,西安 |
| 梁昕宇 |
西安理工大学 岩土工程研究所,西安 |
| 陈厚群 |
西安理工大学 岩土工程研究所,西安 ;中国水利水电科学研究院 工程抗震中心,北京 |
|
| Hits: 3138 |
| Download times: 1876 |
| Abstract: |
| The contact mesh model is used to improve 3-D model of random aggregate concrete. Contact mesh is used for simulating interface material between aggregate and motor, the corresponding calculation program is made. So the new model is called contact mesh model of concrete. The conduplicate-line damage evolvement model is applied, the computation results of numerical simulation are analyzed and researched. The results of numerical simulation and CT experiment are compared in failure charts of concrete and curve charts of load-displacement. The crack initiation and propagation are similar with the results of CT experiment; the curve chart of load-displacement of numerical computation is certain extent uniformity with real experiment results. Thereby the contact mesh model overcomes the shortages of random aggregate model, which are as follows: the great thickness of the interface, the great number of element, the slow calculation speed, and the wide hole-zone of crack so ,it is indicated that the improved numerical model of concrete can not only be more similar with the real model, but also greatly increase the speed of computation. |
|
|
|