Newton Raphson method was introduced into the FEM analysis model in order to ensure that the solution of each iterative step would converge by means of satisfying some restrictive condition.

在有限元分析模型中引入了牛顿迭代法，以使每一时间步长的末端温度满足某一限制条件而平衡收敛。

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Iterative method is used for the whole road section to find out analytic solution and stress and displacement caused by temperature change in any point of CRCP can be calculated.

利用该解析解，在全路段范围内进行迭代求解，可以计算CRCP内任一点由温度变化所引起的应力、位移。

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By this iterative method, the solvability of the equations can be determined automatically, and its reflexive matrix solution or least-norm reflexive matrix solution can be got within finite steps.

该算法可以判断矩阵方程组是否有自反矩阵解，并在有自反矩阵解时，可以在有限步迭代计算之后得到矩阵方程组的一个自反矩阵解或者极小范数自反矩阵解。

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