The dual reciprocity boundary element method(DRBEM)and Burton-Miller boundary integral equation are applied to study the scattering and radiation problem of thin-walled axisymmetric structure.
Boundary element method discretize on boundaries and perform element integration on boundary elements to obtain the element stiffness coefficients.
Boundary element method in acoustics for Neumann boundary condition problems including sharp edges & corners is investigated.In previous acoustic boundary element method,acoustic pressure and normal v
The high-performance boundary element method was used to simulate the deformation and interface debonding of particulate composites.
When the boundary element method is used to solve the non-homogeneous problem,the fundamental solution of the corresponding homogeneous problem has to be adopted due to the difficulty for obtaining th
Based on the feature of the governing equation of the two-dimensional piezoelectric semiconductor,a "piezoelectric-conductor" iterative boundary element method is proposed to analyze the crack problem
The singular boundary method(SBM)is a recent meshless boundary collocation method,and has so far been applied successfully to various problems.
有限元方法(Finite element modeling,FEM)能够分析各种电磁耦合系统,具有精度高、适应性好等突出优点.由于建模、分析、求解的复杂性,采用FEM分析电机系统动态特性较为困难.与有限元方法相比,磁等效电路方法(Magnetic equivalent circuit,MEC)能够以较小的计算代价分析较为复杂的电磁耦合系统,近年来受到越来越多学者的重视.但是现有MEC模型中仅考虑转
采用元胞自动机方法,从介观尺度对金属腐蚀产物的形成及演化过程进行研究。通过定义金属腐蚀的反应规则引入影响腐蚀产物生成的三个主要环境因素(腐蚀元胞浓度、溶解概率、环境温度),对不同环境下金属腐蚀产物的形成及发展过程进行了模拟。结果 显示:腐蚀产物-时间的模拟曲线近似呈二次函数关系;在三个因素的交互作用下,腐蚀产物体积较已腐蚀金属体积显著增大。这为环境因素作用对金属结构完整性和安全性的研究提供了一定参
本文通过预压水平弹簧实现负刚度,设计了正负刚度并联隔振器实验模型如图.1所示.首先进行了负刚度机构的负刚度特性理论分析,进一步分析了该隔振器的准零刚度特性,具体分析了参数几何参数、阻尼、预压弹簧刚度、刚度比等对系统刚度的影响.同时,开展了该隔振器的刚度实验,实验采用法码加卸载的方法测量其轴向载荷与位移的关系曲线,并拟合出加卸载的静态刚度值.加载过程中,静刚度为5.24N/mm;卸载过程中,静刚度为