On Thick-Walled Cylinder Under Internal Pressure

Abstract

A technique for elastic-plastic analysis of a thick-walled elastic-plastic cylinder under internal pressure is proposed. It involves two parametric functions and piecewise linearization of the stress-strain curve. A deformation type of relationship is combined with Hooke’s law in such a way that stress-strain law has the same form in all linear segments, but each segment involves different material parameters. Elastic values are used to describe elastic part of deformation during loading and also during unloading. The technique involves the use of deformed geometry to satisfy the boundary and other relevant conditions. The value of strain energy required for deformation is found to depend on whether initial or final geometry is used to satisfy the boundary conditions. In the case of low work-hardening solid, the difference is significant and cannot be ignored. As well, it is shown that the new formulation is appropriate for elastic-plastic fracture calculations.

Radial Body Forces Influence on FGM and Non-FGM Cylindrical Pressure Vessels

“…In general, physical behavior of non-FGM thick-walled pressure vessels has been investigated in the last decade by several researchers, like Sinclair and Helms [10] who have performed a fundamental review study of elastic hoop stress formulas in cylindrical and spherical pressure vessels. Other researchers like Zhao et al [11] have proposed a technique for elastic-plastic analysis of a thick-walled elasticplastic cylinder under internal pressure. Their calculation was based on two parametric functions including piecewise linearization of the stress-strain curve.…”

Of a Fatigued Thick-Walled Cylindrical Pipe on the Brink of Yielding

“…This process means well for elasto-plastic cylinders. It is gaining currency, as can be seen in literatures [1] [7] [8]. In any case, repeated or prolonged stress is usually implicated in material fatigue.…”

Residual strains around cold worked holes from statistical view

“…al. (1999), Jahed et al (2000), Zhao et al(2003), Pinho et al (2005), Matos et al (2005), Hojjati and Hassani (2007), Nigrelli and Pasta (2008), Su et. al.…”