Corrosion of a thin-walled spherical shell under time dependent internal pressure
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Elastic thin-walled closed spherical shell is considered exposing to mechanochemical corrosion under constant external pressure and internal pressure decreasing with time.It is important that the equivalent stressses are chosen to be dependent not only on difference of internal and external pressures but on both internal and external pressure values themselves. We are investigating the dependencies of a vessel lifetime on the rate of pressure decrease, under the assumption that corrosion rate depends linearly on stress.