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Journal of Applied Mechanics and Technical Physics

2018 year, number 1

Long-Term Strength of a Thick-Walled Pipe Filled with an Aggressive Medium, with Account for Damageability of the Pipe Material and Residual Strength

S. A. Piriev
Baku State University, Baku, AZ-1148, Azerbaijan
Keywords: агрессивная среда, концентрация агрессивной среды, интенсивность напряжений, повреждаемость, разрушение, aggressive medium, concentration of an aggressive medium, stress intensity, damageability, fracture


This paper describes the study of scattered fracture of a thick-walled pipe filled with an aggressive medium, which creates uniform pressure on the inner surface of the pipe. It is assumed that the aggressive medium affects only the value of instantaneous strength. Damageability is described by an integral operator of the hereditary type. The problem is solved with allowance for residual strength of the pipe material behind the fracture front. Numerical calculation is carried out, and relationships between the fracture front coordinate and time for various concentrations of the aggressive medium and residual strength behind the fracture front are constructed.