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УДК 539.4

 

 

Kryshchuk M., Orynyak A.
The National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv, Ukraine ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it )

RATIONALE METHODOLOGIES CALCULATING ref σ FOR THROUGH-WALL CRACKED PIPES LOAD BY COMBINATIONFORCE, BENDING MOMENT AND PRESSURE. PART:I

Abstract. The main element of the pipeline construction is a pipe. In this article the case of tubes with continuous circular crack in different sizes with different ratio of the average radius to the thickness of the pipe wall. The feature works that distinguishes it from existing approaches, is to consider the combined load of pressure, force and transverse moment, which corresponds to practical needs. The paper disclosed the evolution of current methods to breakdown and the analysis of existing methods of determining the limit load. Particular attention is paid to Abaqus v.6.11 software (Licence of Freiburg University “IWM”) built on the theory of finite elements and the comparison of theoretical methods with numerical methods. Great attention should be paid directly to a review of theoretical methods. We give a reasoned analysis and highlighted some significant advantages over other methods.


Keywords: through-wall cracked pipe, leak before break, limit load, reference stress.

 

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