Shear strength, avalanches, and structures of soft cohesive particles under shear
Frontiers in PhysicsThe physics of granular materials, including rheology and jamming, is strongly influenced by cohesive forces between the constituent grains. Despite significant progress in understanding the mechanical properties of granular materials, it remains ...
Kuniyasu Saitoh
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A New Approach for Classifying the Permanent Deformation Properties of Granular Materials under Cyclic Loading. [PDF]
Materials (Basel), 2023 Liu G, Zhao M, Luo Q, Zhou J.
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Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy
Advanced Engineering Materials, EarlyView.A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang +10 more
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Characterization of permanent deformation properties of densely-compacted unbound granular materials subjected to cyclic loading. [PDF]
Sci Rep, 2023 Liu G, Zhao M, Luo Q, Lu R.
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Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Advanced Engineering Materials, EarlyView.The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han +5 more
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A Numerical Measurement Method for Dynamic Granular Materials Based on Computer Vision. [PDF]
Materials (Basel), 2022 Liu H, Nie Y, Chen M, Liu S, Mohammed A.
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Advanced Engineering Materials, EarlyView.Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova +2 more
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Identify the Micro-Parameters for Optimized Discrete Element Models of Granular Materials in Two Dimensions Using Hexagonal Close-Packed Structures. [PDF]
Materials (Basel), 2023 Zhou X, Jin D, Ge D, Chen S, You Z.
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Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites
Advanced Engineering Materials, EarlyView.Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter +9 more
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A COMPREHENSIVE CONSTITUTIVE EQUATION FOR GRANULAR MATERIALS
TASK Quarterly, 2000 A constitutive equation is proposed for describing changes of states of granular materials, which are sufficiently characterised by the void ratio and the stress tensor. It may be considered as an extension of the Critical State concept.
GERD GUDEHUS
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