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| Multi-scale finite element modeling and its application in the analysis of a steel-concrete hybrid frame |
| Received:September 09, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20103015 |
| KeyWord:multi-scale interfacial connection finite element engineering application elasto-plastic time-history analysis |
| Author | Institution |
| 林旭川 |
清华大学 土木工程系,清华大学 结构工程与振动教育部重点实验室,北京 |
| 陆新征 |
清华大学 土木工程系,清华大学 结构工程与振动教育部重点实验室,北京 |
| 叶列平 |
清华大学 土木工程系,清华大学 结构工程与振动教育部重点实验室,北京 |
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| Abstract: |
| As an effective process to obtain appropriate balance between accuracy requirements and calculation workloads, multi-scale calculation has been introduced into many research fields as well as different engineering practices. In the field of structural multi-scale finite element analysis, an important research problem is how to make the local microscopic model and structural macroscopic model work together. To accomplish a reliable interface between microscopic model and macroscopic model, a methodology was proposed and its constraint equations of deformations including axial deformation, transverse deformation and rotation were presented. With a user-defined subroutine, the multi-scale modeling was realized in commercial finite element software and a simple tube was calculated to verify the methodology. Based on an accurate microscopic column-to-beam connection model validated by test, elasto-plastic multi-scale analysis of a steel-concrete hybrid frame was carried out and the results show that multi-scale calculation can simulated the complex boundary condition of this connection well. The proposed methodology meets the deformation compatibility well at the interface between different-scale models and is applicable in engineering application. |
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