Abstract
ABSTRACT The shear deformation of the steel strip layer is introduced for the first time into the constitutive model of steel strip reinforced thermoplastic pipes (SSRTP), aiming to obtain a more precise solution for the burst pressure. Five SSRTP specimens with end fittings were employed to conduct the burst pressure test. Accordingly, two sets of FE models which are friction-inclusive and friction-neglecting were established. The friction-inclusive FE model demonstrates good agreement with the test solution, while the friction-neglecting FE model aligns well with the theoretical solution. The findings indicate that for wide strip layers, the shear deformation is not negligible. The impacts of additional tensile armour, winding angle, and friction coefficient on the burst pressure were analyzed. Finally, a linear correction is applied to account for the influence of the friction coefficient, yielding a result that can be regarded as the lower limit of the SSRTP’s burst pressure.
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