In numerical calculation , the paper employs the collocation method to compute the coupled boundary integral equations . this paper builds one - quarter wire race and one eighth rolling ball contact model , employs both quadrangle and triangle element and forms the contact pairs 建立了1 / 4钢丝与1 / 8滚动体的接触模型,同时使用四边形八节点单元和三角形六节点进行单元划分,并形成了接触点对。
On the basis of the promotion of the noise control standard in vehicles , using the domestic and international recent research result of active noise control , combining the vehicles own characteristics , this article explains in detail the research of active noise control utilizing the piezoelectric ceramic in vehicles , and discusses the collocation method of piezoelectric and the control strategy of neural network . according to the acoustics mode 摘要基于国内对汽车车内噪声控制标准的提升,运用目前国内外对噪声主动控制方面的研究成果,结合汽车本身的特点,利用压电陶瓷对车内噪声进行主动控制的研究。
The extrapolation was used in this method for improving efficiency and accuracy , and the quasi shannon interval wavelet collocation method was constructed based on the concept of interpolation wavelet transform . this method can handle the problems of complex boundary conditions and improve computation accuracy greatly 在此基础上,根据区间插值小波的概念,构造了拟shannon区间小波配置法,数值算例表明该方法不但可以消除边界效应,而且可大幅度提高计算精度。
In the wrscs , the self - consistent model is used to describe the complex configurations of the particulate composite and the temperature field is solved by weighted residual collocation method with some proper simplifications . this method provides a more efficient way of setting up the algebraic equations corresponding to the governing differential equations . the prediction formula for the effective thermal conductivity of the composite is obtained 权残自洽方法可以用于描述不同形状夹杂的复合材料的微观结构,通过对不同几何形状角点做适当的圆弧化处理,采用加权残值数值计算方法的配点法将求解微分控制方程变为求解线性方程组,进而得到任意形状夹杂内部的温度场,建立含不规则形状夹杂的复合材料有效热导率的预测公式。
Hence this method can improve accuracy and efficiency of the calculation . c . based on these work upwards , an adaptively wavelet precise time - invariant integration method was proposed in this paper . in this method , an adaptive multilevel interpolation wavelet collocation method for partial difference equations ( pdes ) was conducted , in which the time complexity is less than oleg v ' s method , and then the adaptive precise integration method was combined with , so that in this method the adaptively discretes both in time domain and physical domain were realized 该方法将外推法引入求解结构动力方程的精细时程积分法中,从而使该方法在求解非线性动力方程中可以自适应选取时间步长;需要指出的是,由于考虑了矩阵指数精细算法和外推法算法在时间离散方法上的一致性,在外推过程中,计算工作量基本没有增加;因此,两种方法的结合有效提高了算法的效率和精度。
In mathematics, a collocation method is a method for the numerical solution of ordinary differential equations, partial differential equations and integral equations. The idea is to choose a finite-dimensional space of candidate solutions (usually, polynomials up to a certain degree) and a number of points in the domain (called collocation points), and to select that solution which satisfies the given equation at the collocation points.