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| Static sub-interval perturbed finite element method based on the elements |
| Revised:May 08, 2005 |
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| DOI：10.7511/jslx20074102 |
| KeyWord:interval correlation,interval extension,computational precision,interval finite element method,perturbed method |
| SU Jing-bo SHAO Guo-jian LIU Ning |
| 1. College of Traffic, Hohai University, Najing 210098, China; 2. Department of Engineering Mechanics, Hohai University, Nanjing 210098, China |
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| Abstract: |
| Interval correlation results in the extension of interval.The methods of considering interval correlation are discussed and the methods of reducing interval extension are given.Based on the ideas of the paper,the formulas of sub-interval perturbed finite element method based on the elements are given.The sub-interval amount is discussed and the approximate formula of computing is given.At the same time,the computational precision is discussed and some measures of improving computational efficiency are given.By analyzing the truss structure and the planar stress beam structure,the numerical results indicate the sub-interval perturbed finite element method may obtain some certain precision and the method is reasonable and feasible. |
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