An XFEM plate element for high gradient zones resulted from yield lines
A high gradient of displacement field occurs when a yield line is formed in a plate with elasto-plastic material. For such applications, the Extended Finite Element Method (XFEM) has shown to be an effective numerical method to capture the behavior of a plate with a locally non-smooth displacemen...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/103385 http://hdl.handle.net/10220/19338 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | A high gradient of displacement field occurs when a yield line is formed in a plate with
elasto-plastic material. For such applications, the Extended Finite Element Method
(XFEM) has shown to be an effective numerical method to capture the behavior of a plate
with a locally non-smooth displacement field, as well as a displacement field with a high
gradient. In this article, a 6-node isoparametric plate element with XFEM formulation is
presented to capture the elasto-plastic behavior of a plate in small-deformation analyses.
The Hermite function is adopted at the element level to enrich both the translational and
the rotational displacement approximation fields so that non-smoothness in displacement
fields near a yield line can be simulated. |
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