• 选择了几个典型非线性方程组,从收敛可靠性计算成本适用性等指标分析对比不同算法

    Convergence reliability, computational cost and applicability of different algorithms were compared by testing several classical equations of nonlinear equations.

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  • 计算结果表明广义协调对于求解结构几何非线性问题同样具有精度收敛等优点

    Numerical results indicate that the generalized conforming element has the advantages of high accuracy and uniform convergence to geometrically nonlinear problem of structures.

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  • 每次成功收敛非线性分析最后,用荷载系数当前荷载总和计算总荷载系数。

    The total load factor is computed as the sum of the old total load factor and the current Loading Rate at the end of each successfully convergent nonlinear analysis.

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  • 本文讨论非线性多组分液相色谱速率模型求解过程两种不同的插值方式线性插值拉格朗日插值对模型计算结果收敛速度的影响。

    Two interpolation methods, which are linear interpolation method and the Lagrange interpolation method, are compared for calculating the rate model of multi-component nonlinear liquid chromatography.

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  • 对于非线性对流占优扩散方程不仅可以消除因对流占优项引起数值振荡现象可以加快收敛速度提高计算效率

    For the nonlinear convection-dominated diffusion equation, this method can not only stabilize the numerical oscillation but also accelerate the convergence and improve the computational efficiency.

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  • 非线性磁场问题的计算表明,这方法收敛很快求解非线性磁场涡流问题的一种有效解析法。

    It is found that the method converges rapidly and is efficient for determining magnetic filed and eddy current in two dimension nonlinear ferromagnetic materials.

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  • 给出一种新的求解非线性方程迭代方法算法至少是5收敛且不用计算导数,具有收敛速度快,计算精度的特点。

    In this paper we present a new iteration method with high accuracy for solving nonlinear equations, this method has not only 5-order convergence but also avoids the operation of derivatives.

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  • 计算仿真结果表明算法收敛性能优于粒子优化算法并且非线性盲信号分离中有效的。

    The computer simulation results showed that the proposed algorithm was superior to original particle swarm optimization algorithms and was effective in separating nonlinear blind sources.

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  • 由于计算存在着材料非线性几何非线性以及接触非线性问题,为了提高计算收敛性能采用时间计算长。

    Because of material nonlinear, geometry nonlinear and contacting nonlinear, the small time step is adopted to improve convergence of the calculation.

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  • 对于非线性对流占优扩散方程,不仅可以消除因对流占优项引起数值振荡现象,更重要的是可以加快收敛速度提高计算效率

    For the nonlinear convection-dominated diffusion equation, the method can stabilize the numerical oscillation, accelerate the convergence and improve the computational efficiency.

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  • 如果非线性分析收敛失败包括检测结构不稳定,则荷载乘以备份比,计算新的荷载比。

    If the nonlinear analysis fails to converge, including the detection of a structural instability, a new Loading rate is compute by multiplying the old rate by the Backup rate.

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  • 如果非线性分析收敛失败包括检测结构不稳定,则荷载乘以备份比,计算新的荷载比。

    If the nonlinear analysis fails to converge, including the detection of a structural instability, a new Loading rate is compute by multiplying the old rate by the Backup rate.

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