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| Identification of multi-variables in a beam subjected to moving loads via a self-adaptive precise algorithm in time domain |
| Received:August 08, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20093014 |
| KeyWord:sand ripples sand dunes large-eddy simulation mixed sand sizes immersed boundary method multiscale |
| Author | Institution |
| 李哈汀 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系,大连 |
| 杨海天 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系,大连 |
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| Abstract: |
| A numerical model is presented to identify constitutive parameters for a simply supported beam subjected a moving load. An adaptive precise algorithm in the time domain and FEM are employed to describe the direct problem, and sensitivity analysis can therefore be implemented conveniently. The Levenberg-Marquardt algorithm is utilized to solve the inverse problem, and the combined identification of elastic modulus and damping coefficients is realized. Two numerical examples are provided to verify the proposed model, and satisfactory results are achieved. The measurement noise is taken into account. |
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