Hazardous liquids and gases transportation through pipelines is widely used by many industries, namely: the oil and gas industry, chemical, power and nuclear industries etc. Generally, industrial pipelines are very complex and branched structures operating under multi-factor loading. The Russian industrial pipelines are the most numerous and lengthy in the world. The service life of the most pipelines is coming to an end or expired. Ageing of pipelines entails increasing number of failures causing serious economical, environmental, and societal consequences. One of the most effective tools for enhancing pipeline system safety is mathematical simulation of feasible failures by up-to-date methods and techniques of numerical analysis. The paper presents some examples of implementing ANSYS and LS-DYNA for analyzing failures at main gas pipelines. The paper considers failures occurrence at the most hazardous sections: underground gas pipeline crossings, compressor stations, underwater passages, mountain pipelines etc. The wide capabilities of ANSYS and LS-DYNA make it possible to analyze the failures starting from initiation up to localizing failure consequences. The paper presents the analysis for ultimate pipeline state, simulation of pipeline fracture and failure development, the analysis of hazardous failure consequences. Comparing the simulation results with real failure data shows that the models developed and software applied allows analyzing the failures at industrial pipelines with the currently required accuracy.
Implementation of ANSYS and LS-DYNA for simulating failures at pipelines
Implementierung von ANSYS und LS-DYNA für die Simulation von Rohrleitungsschäden
2002
7 Seiten, 11 Bilder, 3 Quellen
Aufsatz (Konferenz)
Englisch
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