Free Axisymmetric Vibration of FGM Circular Plates
-
摘要: 基于三维弹性理论,用直接位移法求解了横观各向同性功能梯度圆板的轴对称自由振动,其材料特性沿板厚度方向按指数形式变化.在弹性简支和刚性滑动两种边界条件下得到了三维精确解,即它逐点满足基本方程和边界条件.最后给出了数值算例并与以前的工作进行了对比.该方法也可推广应用于材料特性沿板厚度任意变化情形.Abstract: Based on threedimensional theory,a direct displacement method was presented to investigate free axisymmetric vibration of transversely isotropic circular plates,whose material is functionally graded and its properties obey the exponential law along the thickness of the plate.For two boundary conditions the solution satisfies all basic equations and corresponding boundary condition at every point and thus is three-dimensionally exact.Numerical examples were finally tabulated and compared with those of previous works.The present method can also be extended to the case of arbitrary distribution of the material properties along the thickness of the plate.
-
Key words:
- functionally graded material (FGM) /
- circular plate /
- free vibration /
- axisymmetry
-
[1] Bert C W. Research on dynamic behavior of composite and sandwich plates,Ⅴ: part Ⅰ[J]. The Shock and Vibration Digest,1991,23(6):3-14. [2] Ding H J,Xu R Q,Chi Y W,et al. Free axisymmetric vibration of transversely isotropic piezoelectric circular plates[J].International Journal of Solids and Structures,1999,36(30): 4629-4652. doi: 10.1016/S0020-7683(98)00206-6 [3] Xu R Q. 3D exact solutions for free vibration of laminated transversely isotropic circular,annular and sectorial plates with unusual boundary conditions[J].Archive of Applied Mechanics,2008,78(7):543-558. doi: 10.1007/s00419-007-0177-2 [4] Reddy J N,Wang C M,Kitipornchai S. Axisymmetric bending of functionally graded circular and annular plates[J].European Journal of Mechanics A/ Solids,1999,18(2):185-199. doi: 10.1016/S0997-7538(99)80011-4 [5] Ma L S,Wang T J. Relationships between axisymmetric bending and buckling solutions of FGM circular plates based on third-order plate theory and classical plate theory[J]. International Journal of Solids and Structures,2004,41(1):85-101. doi: 10.1016/j.ijsolstr.2003.09.008 [6] Nie G J,Zhong Z. Semi-analytical solution for three-dimensional vibration of functionally graded circular plates[J].Computer Methods in Applied Mechanics and Engineering,2007,196(49/52):4901-4910. doi: 10.1016/j.cma.2007.06.028 [7] 周凤玺,李世荣. 功能梯度材料圆板的三维弹性分析[J]. 振动与冲击,2008,27(1):115-118,130. [8] Li X Y,Ding H J,Chen W Q. Elasticity solutions for a transversely isotropic functionally graded circular plate subject to an axisymmetric transverse load qrk[J]. International Journal of Solids and Structures,2008,45(1):191-210. doi: 10.1016/j.ijsolstr.2007.07.023 [9] Moler C,Loan C V. Nineteen dubious ways to compute the exponential of a matrix,twenty-five years later[J].SIAM Review,2003,45(1):3-49. doi: 10.1137/S00361445024180
计量
- 文章访问数: 1778
- HTML全文浏览量: 225
- PDF下载量: 995
- 被引次数: 0