Titlebook: Direct Methods for Limit States in Structures and Materials; Konstantinos Spiliopoulos,Dieter Weichert Book 2014 Springer Science+Business

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The Residual Stress Decomposition Method (RSDM): A Novel Direct Method to Predict Cyclic Elastoplasime-stepping calculations, one may alternatively use direct methods. A?common feature of these methods is to estimate directly these cyclic states, profiting, thus, big savings in computer time. The elastic shakedown is the most important, in terms of structural safety, cyclic state. Most of the exi

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Use of Layout Optimization to Solve Large-Scale Limit Analysis and Design Problems,ly identify structurally efficient designs for a specified load carrying capacity. . is a direct method that can be used to solve very large-scale problems when adaptive solution schemes are employed, and the same underlying mathematical formulation is applicable to both analysis and design problems

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Direct Evaluation of the Post-Buckling Behavior of Slender Structures Through a Numerical Asymptotipenalized by the lack of adequate computational tools. Standard incremental iterative approaches are computationally expensive and unaffordable, while FEM implementation of the Koiter method is a convenient alternative. The analysis is very fast, its computational burden is of the same order as a li

NIL

A Quasi-periodic Approximation Based Model Reduction for Limit Analysis of Micropile Groups, the complex geometry of large soil-micropile systems makes accurate calculation of the bearing capacity of the reinforced soil a computational challenge. This complexity requires highly detailed and finely discretized models to achieve reasonable accuracy using direct numerical methods. Such models

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,The Anderson-Bishop Problem—Thermal Ratchetting of a Polycrystalline Metals,terials, originally analyses by Anderson and Bishop in the 1950’s for polycrystalline alpha uranium. The background to the original analysis and its subsequent history in the literature is discussed. Two distinct phenomena are involved. The first is ratchetting due to a fluctuating residual stress f

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Recent Development and Application of the Linear Matching Method for Design Limits in Plasticity antories for which certain types of material failure do not occur. This involves the determination of the shakedown limit, ratchet limits, plastic strain range concerning fatigue crack initiation in a low cycle fatigue assessment, and creep fatigue interaction..In this paper a state-of-the-art direct

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Direct Methods for Limit States in Structures and Materials

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Direct Methods for Limit States in Structures and Materials978-94-007-6827-7

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Finite Element Limit Analysis and Porous Mises-Schleicher Material,The obtained numerical bounds prove to be very accurate when compared to available exact solutions in the particular case of isotropic loadings. A second series of tests is devoted to assess the upper bound and approximate criterion established by Lee and Oung (J. Appl. Mech. 67:288–297, .), and als