论文部分内容阅读
采用有限体积法研究功能梯度材料(FGM)的动态响应及固有特性.基于交错非结构有限体积方法离散弹性动力学方程,通过显格式推进求解离散方程.加速度、速度及位移定义在网格节点上,物性参数定义在网格单元中心.采用双线性四边形单元和常应变三角形单元处理混合网格问题.数值模拟FGM试件的动态响应及固有频率,结果表明所提方法可以有效地模拟功能梯度材料动态响应及固有频率.
The finite volume method is used to study the dynamic response and intrinsic properties of FGM, and the discrete equation is solved by explicit formulation based on the discrete elastic dynamics equations of staggered unstructured finite volume method. The acceleration, velocity and displacement are defined on the grid nodes , And the physical parameters are defined in the center of the grid cell.The bilinear quadrilateral element and the normal strain triangle element are used to deal with the mixed grid.The numerical simulation of the dynamic response and the natural frequency of the FGM specimen show that the proposed method can effectively simulate the function gradient Material dynamic response and natural frequency.