On Determination of the Material Constants of Laminated Cylindrical Shells Based on an Inverse Optimal Approach
On Determination of the Material Constants of Laminated Cylindrical Shells Based on an Inverse Optimal Approach
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DOI：
10.1080/10682760290024436
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发表时间：
2002-01
期刊：
影响因子：
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通讯作者：
X. Han;D. Xu;F. F. Yap-F.;G. Liu
中科院分区：
文献类型：
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作者：
X. Han;D. Xu;F. F. Yap-F.;G. Liu
本文提出了一种由壳体外表面上一个接收点的瞬态动力位移响应反求层合圆柱壳材料常数的方法。一个解析-数值方法用于正演计算，涉及的材料常数的位移响应。采用均匀交叉微遗传算法（uniform µGA）作为反演算子，求解层合圆柱壳的材料常数。最后给出了一些算例来说明这种反演技术在层合壳材料表征中的应用。该技术的鲁棒性的测量噪声的影响进行了研究。满意的识别结果表明，目前的逆技术的有效性，以及它的鲁棒性给定的噪声添加到输入位移响应。
A technique is proposed to inversely determine the material constants of laminated cylindrical shells from transient dynamic displacement responses obtained at only one receiving point on the outer surface of shells. An analytical-numerical method is used for forward calculation that relates the material constants to the displacement responses. A uniform crossover micro-genetic algorithm (uniform µGA) is employed as the inverse operator to determine the material constants of the laminated cylindrical shells. Examples are presented to demonstrate this inverse technique for material characterization of laminated shells. The robustness of the technique to the effect of measurement noise is also investigated. Satisfactory identification results have shown the effectiveness of the present inverse technique as well as its robustness to the given noise added to the input displacement responses.