Results 51 to 60 of about 1,359 (225)
In aerospace engineering, design and optimization of mechanical structures are usually performed with respect to elastic limit. Besides causing insufficient use of the material, such design concept fails to meet the ever growing needs of the light weight
Songhua Huang +4 more
doaj +1 more source
Ratchet analysis of structures under a generalised cyclic load history
This paper introduces a new approach based upon the Linear Matching Method in order to obtain the ratchet limit of structures subjected to an arbitrary thermo-mechanical load history. This method varies from the traditional Linear Matching Method ratchet
Lytwyn, Michael +5 more
core +1 more source
ABSTRACT Bolted assemblies are widely used in aerospace, automotive, and railway industries, where they experience complex multiaxial loadings. Understanding the multiaxial fatigue behavior of materials in such joints is essential for ensuring structural durability.
Maxime Nutte +4 more
wiley +1 more source
A simplified creep-reverse plasticity solution method for bodies subjected to cyclic loading
An extension of the upper bound shakedown theorem to load histories in excess of shakedown has been applied recently to the evaluation of a ratchet limit and the varying plastic strain magnitudes associated with a varying residual stress field. Solutions
Chen, Haofeng, Ponter, Alan R.S.
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In some threaded joints, over a period of operation the conditions of compression are created, most likely owing to the prestress and bending caused by external loads. For elements in the cross-section in which the stresses are distributed unevenly, some
Mindaugas Leonavičius +2 more
doaj +1 more source
This study is devoted to determining the long-term strength of porous geomaterials under alternate wetting and drying condition by statical shakedown analysis.
Jin Zhang +4 more
doaj +1 more source
Shakedown and limit analysis of periodic composites [PDF]
AbstractThe optimization of fiber distribution is analyzed in order to improve the strength performance of metal‐matrix composite material, which is submitted to two variable independent loads by coupling homogenization and shakedown theories. Numerical Direct Methods are applied to acquire the shakedown domain of three‐dimensional heterogeneous ...
M. Chen +3 more
openaire +1 more source
Structural integrity assessment of superheater outlet penetration tubeplate
In recent years, the Linear Matching Method (LMM) has been well developed for the integrity assessment of the component subjected to cyclic thermal and mechanical loads.
Haofeng Chen +3 more
core +1 more source
Memory of Stress History in Single and Two Surface Plasticity for Granular Soils
ABSTRACT Recent studies have identified limitations in Manzari and Dafalias' 1997 and 2004 sand plasticity models, particularly regarding one‐way unloading/reloading and ratcheting loading modes. These models are widely accepted as bounding surface models in the geotechnical engineering community; thus, concerns have arisen about a fundamental lack of ...
Alexandros L. Petalas
wiley +1 more source
In this article the theory of mathematical programming is used, composing improved mathematical models of nonlinear problems of frame loading optimization at shakedown and performing its numerical experiment.
Valentinas Skaržauskas +2 more
doaj +1 more source

