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A 'characteristic-strain' model for creep

机译:蠕变的“特征应变”模型

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The paper describes the construction of a model of creep that is very simple to implement and lends itself to engineering applications for steady or relaxing loads. The model encompasses primary, secondary and tertiary creep behaviour without requiring separate representation of each phase. The evolution of creep strain at constant stress is described in terms of three coefficients, each of self-evident physical significance, at any given temperature. The validity of the model is demonstrated by reference to a P91 dataset and assessed statistically. The incorporation of recovery, via an additional coefficient, is described and its significance is demonstrated by reference to relaxation data.
机译:本文描述了蠕变模型的构造,该模型非常易于实现,非常适合于稳定或松弛载荷的工程应用。该模型包含主要,次要和三次蠕变行为,而无需分别表示每个阶段。恒定应力下的蠕变应变的演化用三个系数来描述,每个系数在任何给定温度下均具有不言而喻的物理意义。通过参考P91数据集证明该模型的有效性,并进行统计学评估。描述了通过附加系数进行的恢复合并,并通过参考松弛数据证明了其重要性。

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