Constitutive Modeling of the Cyclic Loading Response of Low Plasticity Fine-Grained Soils

2018 ◽  
pp. 1-13 ◽  
Author(s):  
Ross W. Boulanger ◽  
Adam B. Price ◽  
Katerina Ziotopoulou
Keyword(s):  
Cyclic Loading ◽  
Constitutive Modeling ◽  
Fine Grained

scholarly journals Superplastic deformation behavior of ultra-fine-grained Ti-1V-4Al-3Mo alloy: constitutive modeling and processing map

2019 ◽  
Vol 6 (9) ◽  
pp. 096584 ◽  
Author(s):  
A O Mosleh ◽  
A V Mikhaylovskaya ◽  
A D Kotov ◽  
M Sitkina ◽  
P Mestre-Rinn ◽  
...  
Keyword(s):  
Constitutive Modeling ◽  
Deformation Behavior ◽  
Superplastic Deformation ◽  
Processing Map ◽  
Fine Grained

scholarly journals Settlements in Fine-Grained Soils Under Cyclic Loading

2001 ◽  
Vol 41 (6) ◽  
pp. 25-36 ◽  
Author(s):  
Kazuya Yasuhara ◽  
Satoshi Murakami ◽  
Noritaka Toyota ◽  
Adrian F.L. Hyde
Keyword(s):  
Cyclic Loading ◽  
Fine Grained

Experimental investigation and constitutive modeling of the behaviour of highly plastic Lower Rhine Clay under monotonic and cyclic loading

2020 ◽  
Author(s):  
Merita Tafili ◽  
Torsten Wichtmann ◽  
Theodoros Triantafyllidis
Keyword(s):  
Cyclic Loading ◽  
Large Strain ◽  
Constitutive Models ◽  
Rate Dependency ◽  
Final Phase ◽  
Inherent Anisotropy ◽  
Fine Grained ◽  
Cyclic Mobility ◽  
Isotropic Consolidation ◽  
Lower Rhine

A new experimental series on the highly plastic (I_P = 34 %) Lower Rhine Clay (LRC) is presented. The study comprises tests on normally as well as over consolidated samples under monotonic and cyclic loading. The loading velocity has been varied in order to evaluate the strain rate dependency of the LRC behaviour testifying i.a. the well-known reduction of undrained shear strength with decreasing displacement rate. Isotropic consolidation followed by a cyclic loading with constant deviatoric stress amplitude leads to a failure due to large strain amplitudes with eight-shaped effective stress paths in the final phase of the tests. The inherent anisotropy has been additionally evaluated using samples cut out in either the vertical or the horizontal direction. Furthermore, the behaviour of LRC is compared with the behaviour of low plastic Kaolin silt (I_P = 12:2 %). A new visco-hypoplastic-type constitutive model with a historiotropic yield surface has been used to simulate some of the experiments with cyclic loading. Even the eight-shaped stress loops at cyclic mobility are reproduced well with this model. The data of this paper can be also used by other researchers for the examination, calibration, improvement or development of constitutive models dedicated to fine-grained soils under monotonic and cyclic loading.

Constitutive modeling the undrained behaviors of sands with non-plastic fines under monotonic and cyclic loading

2019 ◽  
Vol 123 ◽  
pp. 413-424 ◽  
Author(s):  
Ling-Yu Xu ◽  
Jing-Zhe Zhang ◽  
Fei Cai ◽  
Wei-Yun Chen ◽  
Ying-Ying Xue
Keyword(s):  
Cyclic Loading ◽  
Constitutive Modeling

scholarly journals Fatigue Behaviour and Crack Initiation in CoCrFeNiMn High-Entropy Alloy Processed by Powder Metallurgy

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1110 ◽  
Author(s):  
Zdeněk Chlup ◽  
Stanislava Fintová ◽  
Hynek Hadraba ◽  
Ivo Kuběna ◽  
Monika Vilémová ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Cyclic Loading ◽  
Crack Nucleation ◽  
Milled Powder ◽  
Fatigue Behaviour ◽  
Initiation Site ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Fine Grained ◽  
Small Change

Single-phase equiatomic five-element high entropy alloy CoCrFeMnNi was prepared by powder metallurgy. Two materials with ultra-fine-grained microstructure were prepared by spark plasma sintering (SPS) of ball-milled powder at two sintering times (5 and 10 min), assigned as HEA 5 and HEA 10, respectively. Basic microstructural and mechanical properties were evaluated. The median grain size of the microstructures was determined to be 0.4 and 0.6 μm for HEA 5 and HEA 10, respectively. The differences in the microstructure led to a significant change in strength and deformation characteristics evaluated at room temperature. The effect of cyclic loading was monitored by three-point bending fatigue test. The results show that even relatively small change in the microstructure causes a significant effect on fatigue life. The fatigue endurance limit was measured to be 1100 MPa and 1000 MPa for HEA 5 and HEA 10, respectively. The detailed fractographic analysis revealed that abnormally large grains, localised in the microstructure on the tensile loaded surface, were a typical fatigue initiation site. The formation of (nano) twins together with dislocation slips caused the crack nucleation because of the cyclic loading.

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