نتایج جستجو برای: scale contact mechanics

تعداد نتایج: 858047  

Journal: :international journal of nanoscience and nanotechnology 2012
m. h. korayem z. rastegar

contact mechanics is related to the deformation study of solids that meet each other at one or more points. the physical and mathematical formulation of the problem is established upon the mechanics of materials and continuum mechanics and focuses on computations involving bodies with different characteristics in static or dynamic contact. contact mechanics gives essential information for the s...

M. H. Korayem Z. Rastegar

Contact mechanics is related to the deformation study of solids that meet each other at one or more points. The physical and mathematical formulation of the problem is established upon the mechanics of materials and continuum mechanics and focuses on computations involving bodies with different characteristics in static or dynamic contact. Contact mechanics gives essential information for the s...

Journal: :international journal of advanced design and manufacturing technology 0
m. h korayem m. noroozi kh. daeinabi

abstract: application of atomic force microscope as a manipulator for pushing-based positioning of nano-particles has been of considerable interest during recent years. however a detailed modeling of the interaction forces and control on the afm tip is important for prosperous manipulation control, a reliable control of the afm tip position during the afm-based manipulation process is a main is...

Journal: :international journal of nanoscience and nanotechnology 2013
m. h. korayem z. rastegar a. h. korayem a. e. heidari

in this paper, the effect of air relative humidity and capillary force on contact geometry of surfaces based on jkr model by atomic force microscopy was investigated in order to manipulate nano-particles. with transition from macro to nano-scale, the effect of surface forces becomes more significant in comparison with inertial force. because contact mechanics models are based on surface energy ...

A. E. Heidari A. H. Korayem M. H. Korayem Z. Rastegar

In this paper, the effect of air relative humidity and capillary force on contact geometry of surfaces based on JKR model by Atomic force microscopy was investigated in order to manipulate nano-particles. With transition from macro to nano-scale, the effect of surface forces becomes more significant in comparison with inertial force. Because contact mechanics models are based on surface energy ...

Journal: :international journal of nanoscience and nanotechnology 2014
m. h. korayem r. n. hefzabad hefzabad m. taheri z. mahmoodi

the theory of contact mechanics deals with stresses and deformations which arise when the surfaces of two solid bodies are brought into contact. in elastic deformation contact occurs over a finite area. a regular method for determining the dimensions of this area is hertz contact model. appearance of atomic force microscope results in introduction of contact mechanics into biology. low elastici...

Journal: :Journal of Computational Physics 2021

Direct numerical simulation (DNS) yields the highest fidelity predictions of mechanical deformation at pore scale, but is prohibitively expensive for analyzing large or many samples. Discrete element methods (DEM) are an efficient alternative, limited to granular media and incapable estimating controlling prediction errors. We present a pore-level multiscale method (PLMM) that approximates DNS ...

Journal: :Journal of Tribology 1986

M. H. Korayem M. Taheri R. N. Hefzabad Hefzabad Z. Mahmoodi

The theory of contact mechanics deals with stresses and deformations which arise when the surfaces of two solid bodies are brought into contact. In elastic deformation contact occurs over a finite area. A regular method for determining the dimensions of this area is Hertz Contact Model. Appearance of atomic force microscope results in introduction of Contact ...

The low Young's modulus of biological particles results in their large deformation against the AFM probe forces; therefore, it is necessary to study the contact mechanics of bioparticles in order to predict their mechanical behaviors. This paper specifically deals with the contact mechanics of DNA nanoparticles with spherical and cylindrical shapes during manipulation. In previous studies, ...

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