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- W2392860558 abstract "Researches on dynamic fracture propagation and arrest techniques for gas pipeline were reviewed. The arrest criteria of dynamic crack propagation and the prediction methods for arrest toughness of gas pipeline were demonstrated. The advance of prediction method for arrest toughness of pipe steel was described. The mechanics models for coupled fluid-structure-fracture problem in analysis of dynamic crack propagation on gas pipeline were reduced to three kinds of one-dimensional beam model,cylindrical shell model and finite element model. The principles and the study methods for the finite element model were introduced. The current research should be focused on as follows:① For the dynamic ductile fracture, the crack propagation length should be predicted, so as to control the damage of pipeline. ② For the high-toughness steel pipe,it is necessary to improve the traditional CVN and DWTT test methods or to develop the alternative to them,in order to avoid the irrelevant energy dissipation. The method for determining the open angle in crack tip is promising. ③ The present finite element method for predicting dynamic fracture propagation should be improved. The new-cancelled structure technology can be applied." @default.
- W2392860558 created "2016-06-24" @default.
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- W2392860558 date "2004-01-01" @default.
- W2392860558 modified "2023-09-23" @default.
- W2392860558 title "Research advance of dynamic crack propagation and arrest techniques for gas transmission pipeline" @default.
- W2392860558 hasPublicationYear "2004" @default.
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