Paper number 371
|DETERMINATION OF COMPOSITE EFFECTIVE CHARACTERISTICS AND COMPLEX MODULES FOR SHELL STRUCTURES FROM THE SOLUTION OF INVERSE PROBLEM|
V. Matveyenko, N. Yurlova, D. Grachev1
1Institute of Continuous Media mechanics UB RAS
1 Acad. Korolev St., Perm 614013 Russia
|Summary||In this paper a numerical - experimental method is proposed to identify the effective mechanical constants for a composite material in shell structures. As experimental data, the results obtained by analyzing the strain state of a material structure under different static loading conditions or the spectrum of natural frequencies and vibration modes are used. Numerical part of the method is based on the solution to the inverse elasticity problem involving the estimation of the model parameters to describe the strain state recorded experimentally. Two models - of elastic anisotropic body subject to static loading and with complex dynamic moduli in the case of vibrations - are considered. In this treatment, concurrent with the solution to the inverse problem, the sensitivity analysis techniques are applied to choose, for example, the required experiments, and the wanted data from a particular experiment. The potential of the method proposed is illustrated numerically.
||Keywords|| mechanical characteristics of composite, inverse problem, shells.
Theme : Composite Structures ; Characterisation
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