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首页> 外文会议>4th International Pipeline Conference, Sep 30-Oct 3, 2002, Calgary >FULL HISTORY BURST TEST THROUGH FINITE ELEMENT ANALYSIS
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FULL HISTORY BURST TEST THROUGH FINITE ELEMENT ANALYSIS

机译：通过有限元分析进行全历史爆发测试

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摘要

Ductile Fracture propagation phenomena have been widely investigated by researchers in the last years, with particular regard to large metallic structures such as pressurized vessels or gas pipelines. A large number of burst tests have been carried out by Centro Sviluppo Materiali S.p.A. (C.S.M.) in the last decades to identify a set of significant parameters characterizing fracture propagation conditions; the aim is to foresee the behavior (speed and its derivatives) of longitudinal running cracks. The optimal choice of these parameters is strongly helped by appropriate use of Finite Element analysis. To this goal a Finite Element software has been developed, it allows the correct computing of some particular aspects of fracture propagation and the behavior of pressured real gases during decompression. In the present paper a pipeline burst test, carried out on a X100 grade pipeline, and all laboratory tests and data manipulations necessary to build up the whole procedure have been discussed. One of the main objectives is the setting of a procedure able to identify the fracture parameters, when a ductile propagation occurs, avoiding any scatter due to transient effects.
机译：近年来，研究人员对延性断裂扩展现象进行了广泛研究，特别是对于大型金属结构，例如压力容器或输气管道。在过去的几十年中，Centro Sviluppo Materiali S.p.A.（C.S.M.）进行了大量的爆破测试，以确定一组表征裂缝扩展条件的重要参数；目的是预见纵向运行裂纹的行为（速度及其派生）。适当使用有限元分析可以极大地帮助优化这些参数。为了实现这一目标，开发了有限元软件，该软件可以正确计算裂缝扩展的某些特定方面以及减压过程中受压真实气体的行为。在本文中，讨论了在X100级管道上进行的管道爆破测试，并讨论了构建整个过程所需的所有实验室测试和数据操作。主要目标之一是设置一种程序，该程序能够在发生延性传播时识别断裂参数，避免由于瞬态效应而造成的任何分散。

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