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Approximation technique of specially boundary values in using of the boundary integral equation method

机译:边界积分方程法中特殊边界值的逼近技术

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In this paper, a method that can be used to the approximation of the undiscovered boundary functions was discussed, and it contains the Boundary Integral Equation Method (BIEM) in these processes. These approaches will have been utilized in the BIEM for the numerical research with various boundary situatios. For example, Lagrangian polynomials of the zeroth and first second orders, spline functions and the novel weighted minimization techniques have been used successfully in the finite difference method for arbitrary irregular meshers. Several selfadaptive meash methods have been studied in recent years[1]. Now we will present the basic BIEM formulation for a widerspread problem, and discuss the approximation techniques, in the case of supported plates, the boundary conditions permit the uncoupling equation of thefirld to be divided into two harmonic equations that originate, due to the nature of the fundamental solution, an easier integration kernel and a simpler s ystem of equation, calculation of bending and twisting moments and transverse shear force can be formed, combining derivatives of the integral equation which defines the expression of the deflection on any point of the plate. As its numerical results, the treatment of the plates involving square and triangular has constituted in the end, then, the discretization approaches have been studied in detail.
机译:本文讨论了一种可用于近似未发现的边界函数的方法,该方法在这些过程中包含边界积分方程法(BIEM)。这些方法已在BIEM中用于各种边界条件的数值研究。例如,零阶和一阶二阶拉格朗日多项式,样条函数和新颖的加权最小化技术已成功用于任意不规则网格划分器的有限差分法中。近年来已经研究了几种自适应的混搭方法[1]。现在,我们将给出解决更广泛问题的基本BIEM公式,并讨论近似技术,在支撑板的情况下,边界条件允许将场的解耦方程分为两个起源的谐波方程,这是由于基本的解决方案是,结合积分方程的导数,该积分方程定义板在任意点上的挠度的表达式,从而可以形成更简单的积分核和更简单的方程式,弯矩和扭转力矩以及横向剪力的计算。作为其数值结果,最后构成了对包含正方形和三角形的板的处理,然后,详细研究了离散化方法。

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