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Non-linear vibration of composite laminated plates by the hierarchical finite element method

机译:分层有限元法的复合层合板非线性振动

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The geometrically non-linear vibration of thin, laminated composite plates is studied by the hierarchical finite element and the harmonic balance methods. Free and steady-state forced vibration are analyzed. The excitations considered are harmonic pane wakes at both normal and grazing incidence. The equations for motion are solved by a continuation procedure and the stability of the steady-state solutions is investigated by applying Floquet's theory. The convergence properties of the hierarchicla finite element method and the influence of the middle plane in-plane displacements are discussed, and results are compared with published results.
机译:通过分层有限元和谐波平衡方法研究了层压复合板的几何非线性振动。分析了自由和稳态强迫振动。所考虑的激励是在正常入射和掠入射时的谐波窗格唤醒。通过连续过程求解运动方程,并应用Floquet理论研究稳态解的稳定性。讨论了分层有限元方法的收敛性质以及中平面内平面位移的影响,并将结果与​​已发表的结果进行了比较。

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