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工程实际中很多动应力实测数据都是不完整的,而确定其分布对疲劳寿命的估计极为重要。现介绍一种以χ2值构建非线性极小化问题模型来求解不完整数据的分布参数及确定分布类型的方法,并通过实例证明了该方法的可行性。
In engineering practice, many measured data of dynamic stress are incomplete, and it is very important to determine the distribution of the fatigue life. A method to construct nonlinear minimization model with χ2 value to solve the distribution parameters of incomplete data and determine the distribution type is presented. The feasibility of this method is demonstrated by an example.