Inverse method based on modal analysis for characterizing the constitutive properties of thick composite plates

被引:59
作者
Cugnoni, Joel [1 ]
Gmuer, Thomas [1 ]
Schorderet, Alain [1 ]
机构
[1] Ecole Polytech Fed Lausanne, Sch Engn, STI LMAF 12S, CH-1015 Lausanne, Switzerland
关键词
mixed numerical-experimental methods; parameter identification; composite laminates; HSDT shell finite elements; optimisation process; material properties; modal analysis;
D O I
10.1016/j.compstruc.2006.08.090
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper presents a powerful method for evaluating the constitutive properties of composite laminates through a mixed numerical-experimental identification procedure based on both the extracted mode shapes and the corresponding natural frequencies of the structure. The modal quantities are measured with a precise contact-free experimental technique and extracted numerically with an accurate shell element derived from the higher order shear deformation theory. The elastic properties are estimated with a nonlinear least squares algorithm applied to modal identification criteria. With this novel approach of combining frequency and mode based error norms, the proposed identification method allows an accurate identification of both in-plane and transverse elastic properties with a single non-destructive test. The effectiveness of the procedure is highlighted by test cases on moderately thick to thick plates. (c) 2006 Civil-Comp Ltd. and Elsevier Ltd. All rights reserved.
引用
收藏
页码:1310 / 1320
页数:11
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