Hypoplastic Constitutive Modelling of Grain Damage Under Plane Shearing

2014 ◽  
pp. 181-187 ◽  
Author(s):  
Erich Bauer ◽  
Linke Li ◽  
Wenxiong Huang
Keyword(s):  
Constitutive Modelling ◽  
Grain Damage ◽  
Plane Shearing

IMPLEMENTATION OF LOW-TRAUMATIC TECHNOLOGY OF GRAIN SEPARATION FROM A WHEAT EAR: RESULTS OF THE PILOT STUDIES

2020 ◽  
Author(s):  
V.I. Pakhomov ◽  
◽  
S.V. Braginets ◽  
O.N. Bakhchevnikov ◽  
A.I. Rukhlyada ◽  
...  
Keyword(s):  
Separation Process ◽  
Experimental Device ◽  
Cereal Crops ◽  
Pilot Studies ◽  
Traditional Technology ◽  
Air Jet ◽  
Cereal Breeding ◽  
Grain Damage ◽  
Partial Abrasion

Low-traumatic technology of grain separation from an ear is developed. It consists in influence of an air jet on an ear.It leads to rolling of an ear on a surface of the threshing device concave and causes its partial abrasion which is followed by grains separation. Process of wheat ears low-traumatic threshing in the experimental device yields satisfactory results, provides reduces grain endosperm damage on 10-12% in comparison with traditional technology. Germ of grain damage decreases by 5%.Crushing of grain made no more than 0,5%. Use of the developed technology of the low-traumatic threshing will allow to reduce grain damage of cereal crops in case of the harvesting. It is important by cereal breeding.

Constitutive modelling of the thermo-plastic behaviour of soils

2005 ◽  
Vol 9 (5-6) ◽  
pp. 635-650 ◽  
Author(s):  
Lyesse Laloui ◽  
Cane Cekerevac ◽  
Bertrand François
Keyword(s):  
Constitutive Modelling ◽  
Plastic Behaviour

Interrelation of total polished rice and degree of grain damage in the form of dark spots

2020 ◽  
Vol 1 (85) ◽  
pp. 110-114
Author(s):  
Tatyana Kumejko ◽  
◽  
Natalia Tumanyan ◽  
Keyword(s):  
Polished Rice ◽  
Grain Damage

Constitutive modelling of UHPCC material under impact and blast loadings

2021 ◽  
Vol 153 ◽  
pp. 103860
Author(s):  
Shangbin Yang ◽  
Xiangzhen Kong ◽  
Hao Wu ◽  
Qin Fang ◽  
Hengbo Xiang
Keyword(s):  
Constitutive Modelling ◽  
Blast Loadings

scholarly journals Understanding sampling disturbance and behaviour of structured clays through constitutive modelling

2013 ◽  
Vol 53 (2) ◽  
pp. 315-334 ◽  
Author(s):  
Gianfrancesco Rocchi ◽  
Giovanni Vaciago ◽  
Maurizio Fontana ◽  
Monica Da Prat
Keyword(s):  
Constitutive Modelling

Advanced constitutive modelling of shotcrete: Model formulation and calibration

2011 ◽  
Vol 38 (6) ◽  
pp. 834-845 ◽  
Author(s):  
R. Schütz ◽  
D.M. Potts ◽  
L. Zdravkovic
Keyword(s):  
Constitutive Modelling ◽  
Model Formulation

scholarly journals Modelling Polycrystalline Materials: An Overview of Three-Dimensional Grain-Scale Mechanical Models

2013 ◽  
Vol 05 (01) ◽  
pp. 1350002 ◽  
Author(s):  
I. Benedetti ◽  
F. Barbe
Keyword(s):  
Three Dimensional ◽  
Constitutive Modelling ◽  
Polycrystalline Materials ◽  
High Fidelity ◽  
Computational Capability ◽  
Mechanical Models ◽  
Three Dimensional Models ◽  
The Individual ◽  
Individual Grains ◽  
Micro Structures

A survey of recent contributions on three-dimensional grain-scale mechanical modelling of polycrystalline materials is given in this work. The analysis of material micro-structures requires the generation of reliable micro-morphologies and affordable computational meshes as well as the description of the mechanical behavior of the elementary constituents and their interactions. The polycrystalline microstructure is characterized by the topology, morphology and crystallographic orientations of the individual grains and by the grain interfaces and microstructural defects, within the bulk grains and at the inter-granular interfaces. Their analysis has been until recently restricted to two-dimensional cases, due to high computational requirements. In the last decade, however, the wider affordability of increased computational capability has promoted the development of fully three-dimensional models. In this work, different aspects involved in the grain-scale analysis of polycrystalline materials are considered. Different techniques for generating artificial micro-structures, ranging from highly idealized to experimentally based high-fidelity representations, are briefly reviewed. Structured and unstructured meshes are discussed. The main strategies for constitutive modelling of individual bulk grains and inter-granular interfaces are introduced. Some attention has also been devoted to three-dimensional multiscale approaches and some established and emerging applications have been discussed.

Impact of random soil properties on stress–strain response

2004 ◽  
Vol 41 (2) ◽  
pp. 351-355 ◽  
Author(s):  
Dieter Stolle ◽  
Peijun Guo ◽  
Gabriel Sedran
Keyword(s):  
Soil Properties ◽  
Constitutive Modelling ◽  
Soil Parameters ◽  
Strain Response ◽  
Constitutive Behaviour ◽  
Stress Strain ◽  
Deterministic Analysis ◽  
Model Predictions ◽  
Random Variability ◽  
The Impact

This paper analyzes the impact of natural random variation of soil properties on the constitutive modelling of geomaterial behaviour. A theoretical framework for accommodating variation in soil properties is presented. The framework is then used to examine the consequence of parameter variability on stress–strain relations. An important observation is that average soil parameters from a series of tests on small specimens, in which density of the specimens varies randomly, do not necessarily reflect the average constitutive behaviour of soil. Model predictions are shown to be consistent with the experimental data.Key words: random variability, deterministic analysis, soil parameters, constitutive model.

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