搜索结果: 1-15 共查到“granular”相关记录89条 . 查询时间(0.077 秒)
Pushing a shovel through snow, planting an umbrella on the beach, wading through a ball pit, and driving over gravel all have one thing in common: They all are exercises in intrusion, with an intrudin...
第五届全国颗粒材料计算力学会议（The Fifth National Conference on Computational Mechanics of Granular Materials）
第五届 颗粒材料 计算力学 会议
2021/3/9
受新型冠状病毒疫情影响，原定于2020年召开的第五届全国颗粒材料计算力学会议延期举办。经中国力学学会批准，由中国力学学会计算力学专业委员会颗粒材料计算力学专业组主办，武汉大学和大连理工大学联合承办的第五届全国颗粒材料计算力学会议(CMGM-2021)将于2021年3月26日至28日在湖北省武汉市召开。本次会议将以“颗粒计算力学的发展与应用前景”为主题，采取以线下为主、结合线上的方式，聚焦颗粒材料的...
Numerical simulations of granular dynamics:I. Hard-sphere discrete element method and tests
Asteroids, Surfaces Collisional physics Geological processes Regoliths
2015/12/25
We present a new particle-based (discrete element) numerical method for the simulation of granular dynamics, with application to motions of particles on small solar system body and planetary surfaces....
Numerical simulations of granular dynamics II:Particle dynamics in a shaken granular material
Asteroids, Surfaces Collisional physics Geological processes Regoliths Experimental techniques
2015/12/25
Surfaces of planets and small bodies of our Solar System are often covered by a layer of granular material that can range from a fine regolith to a gravel-like structure of varying depths. Therefore, ...
INTEGRATED ESTIMATION OF SEISMIC PHYSICAL VULNERABILITY OF TEHRAN USING RULE BASED GRANULAR COMPUTING
Granular Computing (GrC) algorithm Geospatial Information System (GIS) Earthquake Physical Vulnerability Assessment Multi-Criteria Decision Making
2015/9/21
Tehran, the capital of Iran, is surrounded by the North Tehran fault, the Mosha fault and the Rey fault. This exposes the city to possibly huge earthquakes followed by dramatic human loss and physical...
Micropolar hypoplasticity for persistent shear band in heterogeneous granular materials
Finite elements Heterogeneity Hypoplasticity Micropolar theory Persistent shear band
2015/7/1
Persistent shear bands in heterogeneous materials develop progressively, rather than instantaneously. For a meaningful capture of this deformation pattern, the band must develop naturally and freely u...
DEM simulation of impact force exerted by granular flow on rigid structures
Avalanche DEM Granular flow Impact force
2015/7/1
The paper presents a DEM model for simulating dry granular avalanche down an incline. Flow pattern and impact forces on rigid obstacles are considered. Results of the simulations are compared with exp...
Estimating the impact force generated by granular flow on a rigid obstruction
Debris flow Fluid dynamics Granular flow Impact force Slope failure
2015/7/1
Flowing sediments such as debris and liquefied soils could exert a tremendous amount of force as they impact objects along their paths. The total impact force generally varies with slope angle, veloci...
Computational modeling of deformation bands in granular media. I. Geological and mathematical framework
Deformation bands Granular media
2015/7/1
Failure of granular media under natural and laboratory loading conditions involves a variety of micromechanical processes producing several geometrically, kinematically, and texturally distinct types ...
Computational modeling of deformation bands in granular media. II. Numerical simulations
Deformation bands Granular media
2015/7/1
Development of accurate mathematical models of geomaterial behavior requires a more fundamental understanding of the localization phenomena; in particular, the important factors responsible for the in...
Geological and mathematical framework for failure modes in granular rock
Failure modes Deformation bands Shear bands Compaction bands Dilation bands Fracturing of sandstone
2015/7/1
We synthesize all the available data on failure processes in granular rock and provide a geological framework for the corresponding structures. We describe two categories: (1) sharp discontinuities ma...
Critical state plasticity. Part VI:Meso-scale finite element simulation of strain localization in discrete granular materials
Granular materials Strain localization
2015/7/1
Development of more accurate mathematical models of discrete granular material behavior requires a fundamental understanding of deformation and strain localization phenomena. This paper utilizes a mes...
Condition for liquefaction instability in fluid-saturated granular soils
Bifurcation Instability Liquefaction Undrained condition Saturated sands
2015/7/1
High-porosity granular materials such as loose sands can implode when subjected to compressive stresses. The mechanism of deformation is diffuse in that the jump in the strain rate tensor has three in...
Immunohistochemical characterisation of a canine case of granular cell type trichoblastoma: a case report
dog trichoblastoma immunohistochemistry cytokeratin
2015/4/17
Herein we describe a case of granular cell type trichoblastoma in a dog. A nine-year-old, intact male Scottish terrier presented with a solitary, exophytic and non-ulcerated nodule on the shoulder. Hi...
Particle size distributions by laser diffraction: sensitivity of granular matter strength to analytical operating procedures
Particle size distributions laser diffraction granular matter strength analytical operating procedures
2014/12/31
We tested laser diffraction particle size analysis in poorly coherent carbonate platform cataclastic breccias and unfaulted quartz-rich eolian sands, representing low- and high-strength granular mater...