Nonlinear Dynamics of a Bi-stable Composite Shell for Morphing Applications

机译：用于变形应用的双稳态复合壳的非线性动力学

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A reduced order model for the transverse displacement dynamics of a bi-stable composite shell is derived to be used in morphing structures applica-tions. Love's equations of motion for general shells are used with the Von-Karman strain-displacement relations to obtain the governing dynamic equa-tions. A Galerkin approach is employed to obtain a set of modal nonlinear equations describing the solution for the transverse displacement. Frequency and time response diagrams are experimentally obtained and employed to reduce the order of the derived model. The reduced set of nonlinear modal equations are numerically solved to obtained the simulated frequency and time response for the shell. Experimental results are compared to those numerically simulated showing very good agreement. The capability to cap-ture the dynamics of the bi-stable shell with a simple model facilitates its integration with smart actuators rendering feasible the design of morphing structures.

机译：导出了双稳态复合材料壳横向位移动力学的降阶模型，用于变形结构应用。通用壳的Love的运动方程式与Von-Karman应变-位移关系一起使用，从而获得了主导的动态方程。采用Galerkin方法获得一组描述横向位移解的模态非线性方程。通过实验获得频率和时间响应图，并将其用于减少导出模型的阶数。对简化的非线性模态方程组进行数值求解，以获得壳的模拟频率和时间响应。实验结果与数值模拟的结果进行了比较，显示出很好的一致性。利用简单的模型捕获双稳态壳体动力学的能力有助于将其与智能执行器集成在一起，从而使变形结构的设计可行。

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来源
《19th International conference on adaptive structures and technologies 2008》|2008年|p.158-167|共10页
会议地点 Ascona(CH);Ascona(CH)
作者
A. F. Arrieta; D.J. Wagg; S.A. Neild;
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作者单位

Department of Mechanical Engineering, University of Bristol,University Walk, Bristol, U.K BS8 1TR;

Department of Mechanical Engineering, University of Bristol,University Walk, Bristol, U.K BS8 1TR;

Department of Mechanical Engineering, University of Bristol,University Walk, Bristol, U.K BS8 1TR;

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原文格式 PDF
正文语种 eng
中图分类材料结构及物理性质;
关键词
Multi-stable composites; nonlinear vibration; morphing structures; subhar- monic resonance;

机译：多稳定复合材料；非线性振动变形结构；次谐波共振;

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1. Nonlinear dynamic response and modeling of a bi-stable composite plate for applications to adaptive structures [J] . A. F. Arrieta, S. A. Neild, D. J. Wagg Nonlinear Dynamics . 2009,第1a2期

机译：应用于自适应结构的双稳态复合材料板的非线性动力响应与建模
2. Nonlinear dynamic response and modeling of a bi-stable composite plate for applications to adaptive structures [J] . Arrieta AF, Neild SA, Wagg DJ Nonlinear dynamics . 2009,第1a2期

机译：应用于自适应结构的双稳态复合材料板的非线性动力响应与建模
3. Dynamic control for morphing of bi-stable composites [J] . Andres F Arrieta, Onur Bilgen, Michael I Friswell, Journal of intelligent material systems and structures . 2013,第3期

机译：双稳态复合材料变形的动态控制
4. AUTHORITY OPTIMISATION FOR RESONANT MORPHING CONTROL OF BI-STABLE WING-SHAPED COMPOSITES [C] . Andres F. Arrieta, Onur Bilgen, Michael I. Friswell, International Conference on Composite Materials . 2013

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5. Experiments and theory on the nonlinear dynamics and stability of clamped shells subjected to axial fluid flow or harmonic excitation. [D] . Karagiozis, Konstantinos N. 2006

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7. Nonlinear dynamic response and modeling of a bi-stable composite plate for applications to adaptive structures [O] . Arrieta A.F., Neild S.A., Wagg D.J. 100

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8. Behavior of Shells Made of Composites during the Dynamic Application of Axian Compression [R] . Vol'mir, A.S., Smetanina, L.N. 1988

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Nonlinear Dynamics of a Bi-stable Composite Shell for Morphing Applications

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