Nonlinear local-global static analysis of shells of revolution
This paper describes a finite element program developed as a tool to analyze shells of revolution with local nonlinearities. The motivation is to achieve simplicity and effectiveness in the analysis. In reality, shells of revolution always exhibit local deviations, like a cutout, a junction, and/or...
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| Main Author: | |
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| Format: | Dissertation |
| Language: | English |
| Published: |
ProQuest Dissertations & Theses
01-01-1994
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| Online Access: | Get full text |
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| Summary: | This paper describes a finite element program developed as a tool to analyze shells of revolution with local nonlinearities. The motivation is to achieve simplicity and effectiveness in the analysis. In reality, shells of revolution always exhibit local deviations, like a cutout, a junction, and/or an imperfection. The stress concentration around a local deviation may produce plasticity and/or geometric nonlinearities in the surrounding region. The analytical model consists of three different types of elements: rotational, transitional and general. The rotational shell elements are used in the region where the shell is axisymmetrical and linear, while the general shell elements are deployed in the deviation region where nonlinearities may occur. Transitional shell elements connect the two distinctively different types of elements to achieve displacement field continuities, they do not possess any nonlinear capabilities. It is shown that the local-global technique is a very attractive alternative to the entirely general element style analysis for axisymetric shell structures with local deviation. The procedure should be a useful contribution to the finite element analysis of shells of revolution. |
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| ISBN: | 9798209126560 |