<i>Sliding Friction: Physical Principles and Applications</i>

Persson, B. N. J.; Spencer, Nicholas D.

doi:10.1063/1.882557

Cited by 683 publications

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“…-18 J for C-S-H. 8 This equation can be applied to C-S-H globules as far as an effective (circular) area is used with d taken as the minimum distance between two C-S-H globules (0.18 to 0.32 nm). 4 Substituting the above values into Eq.…”

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confidence: 99%

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Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

Ghebrab¹,

Soroushian²

2010

International Journal of Concrete Structures and Materials

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Theoretical models based on modern interpretations of the morphology and interactions of cement hydration products are developed for prediction of the mechanical properties of hydrated cement paste (hcp). The models are based on the emerging nanostructural vision of calcium silicate hydrate (C-S-H) morphology, and account for the intermolecular interactions between nano-scale calcium C-S-H particles. The models also incorporate the effects of capillary porosity and microcracking within hydrated cement paste. The intrinsic modulus of elasticity and tensile strength of hydrated cement paste are determined based on intermolecular interactions between C-S-H nano-particles. Modeling of fracture toughness indicates that frictional pull-out of the micro-scale calcium hydroxide (CH) platelets makes major contributions to the fracture energy of hcp. A tensile strength model was developed for hcp based on the linear elastic fracture mechanics theories. The predicted theoretical models are in reasonable agreements with empirical models developed based on the experimental performance of hcp.

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“…The van der waals force per unit area (F vdw ) between two flat surfaces separated by a distance d can be expressed as follows: 8 ( 1) where h w is the dielectric constant, approximately 10eV or 1.6022 × 10…”

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confidence: 99%

Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

Ghebrab¹,

Soroushian²

2010

International Journal of Concrete Structures and Materials

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“…Frictional resistance laws that range from the simplest Amontons-Coulomb stick-slip friction [17], to heuristic laws such as slip-or velocity-weakening laws [4,17,18], to laws based on recent laboratory friction experiments including rate-andstate [19][20][21][22][23][24][25][26][27][28] and leaky threshold laws [18,25,26,28], to other types of rupture and healing laws characterized by inner-and outer-physical scales [7].…”

Section: The Virtual California Modelmentioning

confidence: 99%

Strategies for the Detection and Analysis of Space-Time Patterns of Earthquakes on Complex Fault Systems

Rundle

Klein

Tiampo

et al. 2003

Lecture Notes in Computer Science

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Abstract. Our research focuses on computational techniques to understand the dynamics of space-time patterns in driven threshold systems, particularly on earthquake fault systems. We discuss the scientific and computational formulation of strategies for understanding such spacetime patterns, leading optimistically to earthquake forecasting and prediction. In particular, we describe pattern dynamics techniques that can be used to relate the observable processes on earthquake fault systems to the fundamentally unobservable dynamical processes. To illustrate our results, we study the emergent modes of the earthquake fault system in southern California, both with models (Virtual California) and with data.

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“…Last two decades, atomic scale friction has been attracted much attention for the understanding of fundamental mechanisms of macroscopic friction and for many fields of high precision engineering such as nanomachine [1]. Frictional force microscope (FFM) has played an important role in study of atomic scale friction [1,2]. Behavior of frictional force in FFM experiments has been studied theoretically and numerically based on the model which consists of a single atom tip and the potential by a substrate surface [3,4,5,6,8].…”

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Atomic scale friction between clean graphite surfaces

Matsushita

Matsukawa

Sasaki

2005

Solid State Communications

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We investigate atomic scale friction between clean graphite surfaces by using molecular dynamics. The simulation reproduces atomic scale stick-slip motion and low frictional coefficient, both of which are observed in experiments using frictional force microscope. It is made clear that the microscopic origin of low frictional coefficients of graphite lies on the honeycomb structure in each layer, not only on the weak interlayer interaction as believed so far.

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Sliding Friction: Physical Principles and Applications

Cited by 683 publications

References 0 publications

Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

Strategies for the Detection and Analysis of Space-Time Patterns of Earthquakes on Complex Fault Systems

Atomic scale friction between clean graphite surfaces

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