基于物理中面的概念,建立了压电功能梯度板(FGM)几何非线性静力弯曲的基本方程,利用Ritz法研究了材料性质、梯度指数等对FGM板考虑几何非线性时弯曲变形的影响,并通过不同的电压施加方式探讨了压电材料对FGM板变形控制的规律.与已有文献结果对比分析表明,本文建立的方程和采用的方法是可靠的;基于几何非线性方程求解功能梯度材料板的静力变形时,计算偏差随着物理中面与几何中面位置偏差的增大而增大,在利用压电材料对FGM板的变形进行控制时,宜采用物理中面.
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