[PDF] Top 20 Linear matching method for design limits in plasticity

... bound limits requires three conditions to be satisfied: 1) The convexity of material yield surface; 2) The class of strain rates and associated strain increments ensures that the minimum upper bound is contained ... See full document

... Fig.2 is the Bree [2] diagram, which illustrates the responses for the case of a pressurised cylinder subject to cyclic through-wall thermal stress. The ordinate and absicca give normalised values of pressure and thermal ... See full document

... the Linear Matching Method framework for the assessment of design limits in plasticity including load carrying capacity, shakedown limit, ratchet limit and steady state cyclic ... See full document

... tions. The low computational effort required by the LMM com- pared to other computational approaches makes it possible and relatively easy to extrapolate numerical predictions for loading conditions not captured by the ... See full document

... This paper has presented comparisons of the LMM with experimental tests. Limit loads of pipe intersections subject to internal pressure and in-plane moment were considered first and two conclusions can be drawn from the ... See full document

... This paper has presented comparisons of the LMM with experimental tests. Limit loads of pipe intersections subject to internal pressure and in-plane moment were considered first and two conclusions can be drawn from the ... See full document

... the Linear Matching Method (LMM) framework have been developed to address structural integrity issues for components subjected to cyclic thermal and mechanical load ...of design limits ... See full document

... latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue ... See full document

... To validate the results obtained a detailed Step-by-Step analysis has been performed for the same loading case, considering a dwell time equal to 1 hour. Same material models have been used, considering ... See full document

... latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue ... See full document

... the linear matching method is briefly ...reverse plasticity limit, limit load and the gradient of the ratchet limit line, and offers equations characterising these ... See full document

... the Linear Matching Method (LMM) introduced an approach to simulate the creep rupture effect by extending the shakedown analysis method (Chen et ...shakedown method by the introduction ... See full document

... The discrepancy between analytic predictions and numerical LMM outputs is generally within the boundaries of an inaccuracy factor equal to 2, which is allowable for engineering analysis, producing both conservative and ... See full document

... According to industrial experience, during the service life of welded structures subjected to cyclic loading at high tem- perature, welded joints are usually considered as the critical locations of potential ... See full document

... This paper presents further extension of a latest developed approach [3], which includes a creep-fatigue evaluation proce- dure considering time fraction rule for creep-damage assessment and a recent revision of the ... See full document

... The method, the Linear Matching Method , (Ponter and Engelhardt (2000), Chen and Ponter (2001), Ponter et al (2002)), is essentially a programming method that seeks mechanisms that ... See full document

... the plasticity index is usually reduced with the addition of small amounts of ...in plasticity are governed mainly by the mineralogy of the clay and the proportion of clay fraction in the soil (Herrin and ... See full document

... common method is ...weighted method; they are not able to assess the prediction errors ...interpolation method based on regression against observed values of surrounding data points, which are ... See full document

... We generate an initial guess for each force magnitude f by first applying the gradient squared method from Eq. (1) in Section III to the entire disk. We then distribute this total force among the z contacts in ... See full document

... serves relatively late-stage rather than early-stage visual processing. If so, fewer visual processing stages would be adversely affected by plastic changes in V1. In a similar vein, the costs of cortical remapping may ... See full document