نتایج جستجو برای: elastic foundations

تعداد نتایج: 101344  

2007
Neri Oxman Jesse Louis Rosenberg

The paper demonstrates the association between geometry and material behavior, specifically the elastic properties of resin impregnated latex membranes, by means of homogenizing protocols which translate physical properties into geometrical functions. Resin-impregnation patterns are applied to 2-D pre-stretched form-active tension systems to induce 3-D curvature upon release.This method enables...

2013
Guillem Portella Federica Battistini Modesto Orozco

Cytosine methylation is one of the most important epigenetic marks that regulate the process of gene expression. Here, we have examined the effect of epigenetic DNA methylation on nucleosomal stability using molecular dynamics simulations and elastic deformation models. We found that methylation of CpG steps destabilizes nucleosomes, especially when these are placed in sites where the DNA minor...

Journal: :Biochimica et biophysica acta 2015
Ulrich S Schwarz Jérôme R D Soiné

The measurement of cellular traction forces on soft elastic substrates has become a standard tool for many labs working on mechanobiology. Here we review the basic principles and different variants of this approach. In general, the extraction of the substrate displacement field from image data and the reconstruction procedure for the forces are closely linked to each other and limited by the pr...

2003
S. Li J. Wang M. D. Thouless

The effect of transverse shear on delamination in layered, isotropic, linear-elastic materials has been determined. In contrast to the effects of an axial load or a bending moment on the energy-release rate for delamination, the effects of shear depend on the details of the deformation in the crack-tip region. It therefore does not appear to be possible to deduce rigorous expressions for the sh...

Journal: :Journal of physics 2021

Abstract The effect of the foundation heterogeneity on mechanical behaviour a beam Vlasov soils is discussed. According to refined soil model, static problem beams lying transversely isotropic can be solved by an iterative method. In this paper, based energy variational principle, differential equations for under axial force foundations are derived. methods solving internal forces and deformati...

In this study, dynamic bearing capacity of adjacent shallow strip foundations located on sandy soil was examined using a numerical finite difference modeling, FLAC. The behavioral interference of shallow strip foundations under different conditions was investigated. The effect of soil strength parameters, geometric characteristics of shallow foundations and cyclic loads at different distance ra...

2013
Peng Zhang

Plastic concrete consists of aggregates, cement, water and bentonite, mixed at a high water cement ratio, to produce a ductile material. It is used for creating an impermeable barrier (cut-off wall) for containment of contaminated sites or seepage control in highly permeable dam foundations. The effects of water to binder ratio and clay dosage on mechanical properties of plastic concrete were i...

Journal: :پژوهشنامه مبانی تعلیم و تربیت 0
خسرو باقری نوع پرست محمد زهیر باقری نوع پرست

methods and principles used in education come from diverse foundations. this paper aims at examining philosophical and psychological foundations of education based on two similar views from the west and the east: the illuminationist philosophy of suhrawardi and phenomenology of husserl. questions of the research deal with philosophical and psychological foundations of education from the standpo...

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