However, the application of finite element in analysis and computation of uncertain structure is to be limited because there hasn’t a satisfying solving method to fuzzy equations and interval equations.
而由于模糊方程组和区间方程组尚没有一个令人满意的求解方法，制约了有限元法在具有模糊参数结构的分析计算中的应用。
参考来源 - 结构有限元分析神经网络计算研究·2,447,543篇论文数据，部分数据来源于NoteExpress
首先把模糊非线性方程组转变成非线性规划，再用非线性规划中的方法或软件来解。
We transfer fuzzy system of nonlinear equations into a nonlinear programming. Then, some methods of nonlinear programming are used.
第四章把模糊时间序列方程组转化成机会约束规划模型。
In the forth chapter, the fuzzy time series model has been changed into the chance constrained programming.
结果表明，该方法计算速度快、精度高，解决了求解非线性方程组解的模糊性问题，确保了测试结果的可靠性。
It is shown that the method is quick and precise, and the problem of the ambiguity for nonlinear equations and the measurement reliability are solved.
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