نتایج جستجو برای: collapse structure

تعداد نتایج: 1597376  

1997
S. Jhingan

We will describe here the structure of singularity forming in gravitational collapse of spherically symmetric inhomogeneous dust. Such a collapse is described by the Tolman-Bondi-Lemâ itre metric. The main new result here relates, in a general way, the formation of black holes and naked shell-focusing singularities resulting as the final fate of such a collapse to the generic form of regular in...

ژورنال: مواد پرانرژی 2021

as in order to protection of a blast loaded structure, three ways can be utilized: (1) increasing the stand-off using natural or artificial barriers, (2) increasing the structure strength or performance level, (3) decreasing the energy of blast using the passive, semi active, active and hybrid control methods. In recent method, using controlling mechanism and tools, the effect of blast waves is...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Mourad Sadqi Lisa J Lapidus Victor Muñoz

One of the most recurring questions in protein folding refers to the interplay between formation of secondary structure and hydrophobic collapse. In contrast with secondary structure, it is hard to isolate hydrophobic collapse from other folding events. We have directly measured the dynamics of protein hydrophobic collapse in the absence of competing processes. Collapse was triggered with laser...

Nowadays it is common to use the fragility curves in probabilistic methods to determine the collapse probability resulting from an earthquake. The uncertainties exist in intensity and frequency content of the earthquake records are considered as the most effective parameters in developing the fragility curves. The pulse-type records reported in the near-fault regions might lead to the major dam...

Journal: :Journal of computational chemistry 2010
In-Ho Lee Seung-Yeon Kim Jooyoung Lee

We have investigated the folding pathway of the 36-residue villin headpiece subdomain (HP-36) by action-derived molecular dynamics simulations. The folding is initiated by hydrophobic collapse, after which the concurrent formation of full tertiary structure and alpha-helical secondary structure is observed. The collapse is observed to be associated with a couple of specific native contacts cont...

2012
Chuanjia Hu Yujia Dai Jiahe Wang Mengyan Song Xiugen Jiang Min Ding

To analyze the effect of stressed skin action of rigid plate covering on anti-collapse behavior of solar greenhouses under snow load, the numerical simulation on the overall collapse process of single skeleton structure and 6skeleton overall spatial structure with rigid plate covering were conducted on ANSYS. The collapse modes of solar greenhouses and snow load-displacement curves were obtaine...

2015
Derya Deniz Junho Song Jerome F. Hajjar

Structural collapse is traditionally associated with the exceedance of a target value of inter-story drift or plastic hinge rotation at structural components. However, such an approach may not accurately estimate the structural collapse potential due to load redistribution and variation of structural damage within the structure. Moreover, collapse prediction may be sensitive to such assumed thr...

2013
Martin NOSKO F. SIMANČÍK R. FLOREK J. JERZ P. MÚČKA

Original scientific paper In this paper, the possibility to create uniform porous structure for nonsymmetric precursor heating was investigated together with changes in collapse stress and their reproducibility. The statistic relative standard deviation (RSD) of pore size was used to determine the structural uniformity. It was shown that proper adjustment of the foaming parameters leads to form...

We want to study the perturbation growth of an initial seed of an ellipsoidal shape in Top-Hat collapse model of the structure formation in the Modied Chaplygin gas cosmology. Considering reasonable values of the constants and the parameters of the model under study, we can show that a very small deviation from spherical symmetry (ellipsoidal geometry) in the initial seed leads to a nal highly ...

2014
Wei Li Lixin Xu

In this paper, we test the spherical collapse of a viscous unified dark fluid (VUDF) which has constant adiabatic sound speed and show the nonlinear collapse forVUDF, baryons, and dark matter, which are important in forming the large-scale structure of our Universe. By varying the values of the model parameters α and ζ0, we discuss their effects on the nonlinear collapse of the VUDF model, and ...

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