... stress distributions better than the power law and closer to elastic-plastic solutions for textbook cases such as thick cylinder, beam, etc. This part of the article offers several numerical examples to demonstrate the robustness of the method. Upper and lower bound limit loads are calculated using...

...Sathya Prasad Mangalaramanan Statically admissible stress distributions are necessary to evaluate lower bound limit loads. Over the last three decades, several methods have been postulated to obtain these distributions using iterative elastic finite element analyses. Some of the pioneering...

.... In this paper, the effect of global and local limit load solutions for defective elbows on the reference stress and hence the J predictions is investigated using published three-dimensional elastic-plastic finite element (FE) J results, in order to create guidance for users to follow when performing structural...

... and limit analysis of KH piping elbows subjected to internal pressure and cyclic bending moments. Various loading combinations are investigated to generate the shakedown limit and the plastic limit load interaction curves. The effects of material hardening, elbow angle, and loading conditions...

...Min Xu; Jian-bin Wen; Yu-jie Zhao; Chang-Yu Zhou; Xiao-hua He In engineering, many pressure pipes are made of steels with good plasticity, which are subject to internal pressure, axial force, shear force, bending moment, torsion moment or their combined loads. The plastic limit load is an important...

... , “ Safety Assessment and Limit Load Study of Pipeline With Local Wall-Thinning Defect ,” China Pet. Mach. , 32 ( 6 ), pp. 17 – 20 . 10.3969/j.issn.1001-4578.2004.06.006 [11] Hoang , P. H. , Hasegawa , K. , Bezensek , B. , and Li , Y. , 2011 , “ Effects of Torsion on Equivalent...

.... Editor: Haofeng Chen. 08 08 2012 10 04 2013 Simplified limit analysis techniques have already been employed for limit load estimation on the basis of linear elastic finite element analysis (FEA) assuming elastic-perfectly-plastic material model. Due to strain hardening, a component...

..., and evaluate the fatigue life. The linear elastic FEA (finite element analysis) of storage with single, two, and three defects is performed. The limit load analysis is also discussed with two different iterative methods. The result shows that IRIS can be used in detecting internal and external defects...

.... By introducing the element bearing ratio (EBR), generalized yield criterion as well as the reference volume concept, the elastic modulus reduction method (EMRM) is improved and applied to determine both the upper and lower bounds on limit loads of the BPHS. The global safety factor (GSF) is defined as the ratio...

... ratchetting, and limit loads are investigated. Influence functions of the yield stress of WM on the maximum temperature ranges and limit loads are generated. The results confirm the applicability of the extended LMM to the cracked welded pipe. 12 05 2011 14 07 2011 01 12 2011 01 12 2011...

...Rongsheng Li; Zengliang Gao; Yuebao Lei A global limit load solution is derived in this paper for embedded off-set elliptical cracks in a plate under combined tension and bending, based on the net-section collapse principle. The new limit load solution is validated using 3D elastic-perfectly...

... yield stress lower and upper bound limit load shakedown linear matching method The plastic failure mechanism of a structure subject to repeated or cyclic thermal and mechanical loads is known as either ratchetting with excessive deformation (incremental plasticity) or a local low-cycle...

...R. Adibi-Asl; R. Seshadri Limit loads are determined in this paper by invoking the concept of equivalence of “static indeterminacy” that relates a multidimensional component configuration (with cracks) to a “reference two-bar structure.” Simple scaling relationships are developed that enable rapid...

...R. Adibi-Asl; R. Seshadri Several upper-bound limit-load multipliers based on elastic modulus adjustment procedures converge to the lowest upper-bound value after several linear elastic iterations. However, pressure component design requires the use of lower-bound multipliers. Local limit loads...

... to determine the limit load of components with cracks or crack-like flaw. On the basis of linear elastic Finite Element Analysis (FEA), by specifying spatial variations in the elastic modulus, numerous sets of statically admissible and kinematically admissible distributions can be generated, to obtain lower...

... an inelastic stress analysis. The experimentally determined limit load is compared with that from the finite element analysis. The stress concentration factor, the spread of the plastic area, and the behavior of the deformation are provided. Also, a burst test of the model vessel is carried out to provide some...