A New Model for the Mechanochemical Corrosion of a Thin Spherical Shell

Abstract

Abstract. A pressurized thin-walled spherical shell under the conditions of double-sided uniform corrosion is considered. The rates of corrosion are supposed to dependent linearly on the effective stress. Previous solutions for thin shells obtained by other authors reflect only the effect of differential pressure (i.e., the difference between internal and external pressure). The model proposed here allows to include also the effect of hydrostatic pressure on the durability of the shell under the corrosion conditions.

New Benchmark for the Life Assessment of a Thin-Walled Pipe Subjected to Stress Assisted Corrosion

“…The model proposed here is not so complicated as these accurate solutions, but it allows to take into account the effect of hydrostatic pressure on the durability of thin shells under the mechanochemical corrosion conditions. The same questions for spherical shells were investigated in [12,13,14,15]. The problem of calculation of the optimal initial thickness of a spherical vessel operating in mechanochemical corrosion conditions was solved in [16].…”