... load was developed. Stress, displacement, plastic deformation, and local buckling of the buried pipeline were investigated. The effects of trinitrotoluene (TNT) magnitude, pipeline diameter-thickness ratio, pipeline's buried depth, explosive depth, and explosive offset on the mechanical response...

....) on the residual strength of corroded X60 steel pipelines and equivalent stress and plastic strain distribution of the local defect area. The results show that the defect geometry exerts obvious effects on stress–strain distribution. The earliest plastic deformation occurs at the edge of the inner surface defect...

.... In Bauschinger effect (BE) phenomenon, plastic deformation causes a loss in unloading yield strength. The ratio of unloading yield strength to the loading yield strength is called Bauschinger effect factor, BEF. In this paper, plastic deformation influence on the loading and unloading behaviors of DIN1.0406...

.../1.2716434 19 04 2011 22 08 2011 19 01 2012 19 01 2012 elastoplasticity plastic deformation structural engineering Limit load of a structure represents the load at the onset of unconstrained plastic flow, and determination of the load is part of analysis for design...

...Xianjie Yang; Sayed A. Nassar; Zhijun Wu; Aidong Meng The nonlinear plastic deformation behavior of a clamped bolted joint model under a separating service load is investigated using analytical, finite element, and experimental techniques. An elastic-plastic model is used for the bolt material...

... confirm the applicability of this procedure to complex 3-D structures. 05 05 2011 04 07 2011 01 12 2011 01 12 2011 fatigue cracks pipelines plastic deformation plasticity shakedown ratchet limit linear matching method defective pipeline Pipelines are widely...

... 5 5 . eigenvalues and eigenfunctions elastic deformation elastic moduli elastoplasticity finite element analysis plastic deformation pressure vessels yield stress plasticity finite element analysis tangent modulus stiffness eigenvalues computational path Plastic...

... of a global plastic collapse or gross plastic deformation during the specified life of the vessel. Cyclic analysis based on a strain hardening material model indicates that the vessel will adapt to plastic shakedown after 6 load cycles. This indicates that the stress categorization and linearization...

... strength ductile fracture failure (mechanical) failure analysis pipelines plastic deformation axial deformation bending deformation buried pipelines experimental study fracture local buckling monotonic loading oil and gas post-buckling wrinkle Steel pipelines, either onshore...

..., and subsequent reloading in tension and compression. Finally results of a full scale safe maximum pressure (SMP) test of pressure vessels are presented; these tests indicate a significant increase (11%) in SMP. Bauschinger effect fatigue internal stresses plastic deformation pressure vessels tensile...

... elasticity fatigue life testing maximum likelihood estimation plastic deformation pressure vessels regression analysis Weibull distribution When local yielding is involved, the stress-based approach is not appropriate, so in these cases the strain-based approach proves to be a useful method...

... hardening variables such as back-stresses with respect to the geometry change. 17 09 2009 29 01 2010 31 08 2010 31 08 2010 elastic deformation elasticity plastic deformation plasticity pressure vessels work hardening yield stress plastic collapse isotropic hardening...

... plastic deformation plates (structures) 04 01 2010 18 03 2010 23 07 2010 23 07 2010 2010 American Society of Mechanical Engineers ...

... utilizing the formulation of rigid plastic deformation for describing and quantifying the developing “creep exhaustion.” 13 08 2008 10 06 2009 13 10 2009 Holmström S. , Laukkanen A. , and Calonius K. , 2007 , “ Weldment Matching for Creep Life of P22 and P91 Girth...

... 2009 28 07 2009 failure (mechanical) mechanical stability pipes plastic deformation plasticity shells (structures) thin wall structures burst pressure plastic instability pressure toroidal shells Toroidal shells have been used commonly for liquid or gas storage...

... of the welded seam on the inner wall of the tube. In the fracture zone, the fracture face is at an angle of 45 deg to the tube wall face and the explicit plastic deformation is present. The analysis, by electronic energy spectrum, shows that there exist many fatigue striations in the fracture face. A 3D finite...

... and also one factor of reliability. Many structures have nonlinear characteristics. Hysteresis loop characteristic caused by plastic deformation is one of the most common nonlinear characteristics observed in pressure vessels and piping systems. In this paper, an estimation method for the first excursion...

... response aspect of the Los Alamos work is quite relevant to the present study. A key idea is the reliance on modern fracture mechanics ( 17 ) to design vessels that will plastically deform but not catastrophically fail under extreme impulsive loading. Many of these ideas are directly applicable...

... element method. A modified rate-temperature parameter was defined by accounting for the effect of the temperature rise under rapid plastic deformation, and it was applied to the fully coupled analysis between the heat conduction and thermal elastic-plastic behavior. The temperature rise and stress-strain...

... plastic deformation pressure vessels shafts shear strength stress-strain relations tensile strength thin wall structures torsion Fatigue and fracture are of great concern in the design of a load-bearing component. This is particularly true for the pressure vessels. Fatigue should...