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Finite Elements Approaches in the Solution of Field Functions in Multidimensional Space: A Case of Boundary Value Problems

机译:多维空间场函数求解的有限元方法:一类边值问题

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An idealized two dimensional continuum region of GRP composite was used to develop an efficient method for solving continuum problems formulated for space domains. The continuum problem is solved by minimization of a functional formulated through a finite element procedure employing triangular elements and assumption of linear approximation polynomial. The assemblage of elements functional derivatives system of equations through FEM assembly procedure made possible the definition of a unique and parametrically defined model from which the solution of continuum configuration with an arbitrary number of scales is solved. The finite element method(FEM )developed is recommended to be applied in the evaluation of the function of functions in irregular shaped continuum whose boundary conditions are specified such as in the evaluation of displacement in structures and solid mechanics problems, evaluation of temperature distribution in heat conduction problems, evaluation of displacement potential in acoustic fluids evaluation of pressure in potential flows, evaluation of velocity in general flows, evaluation of electric potential in electrostatics, evaluation of magnetic potential in magnetostatics and in the solution of time dependent field problems. A unified computational model with standard error of 0.15 and correlation coefficient of 0.72 was developed to aid analysis and easy prediction of regional function with which the continuum function was successfully modeled and optimized through gradient search and Lagrange multipliers approach. Above all the optimization schemes of gradient search and Lagrangian multiplier confirmed local minimum of function as 0.006-0.00847 to confirm the predictions of FEM and constraint conditions.
机译:GRP复合材料的理想化二维连续区域用于开发解决空间域连续问题的有效方法。通过最小化通过使用三角形元素的有限元程序和线性逼近多项式的假设所公式化的函数来解决连续问题。通过FEM组装程序组装方程的功能泛函方程组,可以定义一个唯一的,通过参数定义的模型,从而可以解决任意数量尺度的连续体构造的求解问题。建议开发的有限元方法用于评估不规则形状连续体的函数功能,该连续体的边界条件已指定,例如结构位移和固体力学问题的评估,热温度分布的评估传导问题,声流体中位移电势的评估,势流中的压力的​​评估,一般流中的速度的评估,静电中的电势的评估,静磁中的磁电势的评估以及解决随时间变化的磁场问题。建立了统一的计算模型,该模型的标准误为0.15,相关系数为0.72,可帮助分析和轻松预测区域函数,并通过梯度搜索和拉格朗日乘数法成功地对连续函数进行了建模和优化。首先,梯度搜索和拉格朗日乘子的优化方案确定函数的局部最小值为0.006-0.00847,以确认有限元和约束条件的预测。

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