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首页> 外文期刊>The Journal of grey system >Application of Grey Prediction Method in Determination of Autofrettaged Residual Stresses
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Application of Grey Prediction Method in Determination of Autofrettaged Residual Stresses

机译：灰色预测法在确定自残残余应力中的应用

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摘要

There are a few measured data of the residual stresses owing to its difficulty and high-cost to measure the autofrettaged residual stress The grey prediction method is introduced in this study to find the relaxation law of autofrettaged residual stresses in stable temperature field and under pressure fluctuation, and grey relational analysis is applied to find the influence of temperature and pressure fluctuation in ultra high-pressure polyethylene reactor on the relaxation of residual stress. The results of grey treatment are consistent with the experiments. It thus can be seen that the grey prediction method provides a valid and convenient way for research on the relaxation of autofrettaged residual stresses, and that it has practical values in the integrity assessment, design and maintenances of autofrettaged vessels.
机译：由于难以测量自应力残余应力的成本高昂，因此残余应力的测量数据很少。本研究引入了灰色预测方法，以求出稳定温度场和压力波动下自应力残余应力的松弛规律。 ，运用灰色关联分析法，研究了超高压聚乙烯反应器中温度和压力波动对残余应力松弛的影响。灰色处理的结果与实验一致。因此可以看出，灰色预测方法为研究自紧式残余应力的松弛提供了一种有效而便捷的方法，并且在自紧式容器的完整性评估，设计和维护中具有实用价值。

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