Dimensional nonlinear numerical models are created for axial durability analysis of welded joints for reinforced polymer pipes (RPP) for oil and gas purpose. The calculations have revealed qualitative differences in the nature of the axial deformation of RPP connection units for gas and oil use. Comparison of axial strength calculated values and experimental data shows good agreement.
Key words: polymer reinforced pipes, butt joints, computer simulation, mathematical model, the stress-strain state, strength, experiment.
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