Stability loss of thin-walled cylindrical tubes, subjected to longitudinal compressive forces and external corrosion

On Stability Loss of a Thin-Walled Spherical Shell Subjected to External Pressure and Internal Homogeneous Corrosion

“…(8), coincides with that one for a thin elastic circular cylindrical shell with the radius R of the middle surface, subjected to longitudinal compressive forces and external general corrosion [7]. Eq.…”

“…It was shown in [5] that this dependence can be approximated by the exponent function. Similar to [6,7], it is possible to write this law in an explicit form, taking into account specific conditions of corrosion and using experimentally established parameters.…”

“…The preexponential factor 0 v in (11) has the meaning of corrosion rate for a non-stressed shell ( 0   ) at c c0 EE  and 0 TT  . Similar to [6,7], the critical time t  , corresponding to the moment of the shell stability loss, can be obtained from the Eqs. (10), (11):…”

“…Here, similar to [6,7], the value of D  can be treated as a relative durability of the shell, and value of N  -as a safety coefficient for the stability.…”

“…In such cases the structure life time will be completely determined by the criterion of the stability loss. For instance, the method of the life time estimation for elastic thin-walled closed circular cylindrical shell, subjected to simultaneous actions of uniform external pressure or longitudinal compressive forces, and homogeneous corrosion, was developed in [6,7].…”