نتایج جستجو برای: Instability analysis
تعداد نتایج: 2892784 فیلتر نتایج به سال:
recently, two of the authors have introduced the collapse capacity spectrummethodology, which allows the assessment of the collapse capacity of highly inelastic p-deltasensitive regular frame structures without performing non-linear time-history analyses. the mainingredient of this method is the collapse capacity spectrum, which represents the seismic collapsecapacity of an inelastic non-deteri...
in this work, we analyse a pair of two-dimensional coupled reaction-diusion equations known as the gray-scott model, in which spot patterns have been observed. we focus on stationary patterns, and begin by deriving the asymptotic scaling of the parameters and variables necessary for the analysis of these patterns. a complete bifurcation study of these solutions is presented. the main mathematic...
in this study a nonlinear asymmetric instability analysis carried out to study primary atomization of annular liquid sheets emanating from the prefilming airblast atomizer using a perturbation method and potential flow assumption. in this direction, firstly governing equations derived according to potential flow assumption and conservation equations while dynamic and static boundary condition a...
in this article, vibration analysis of an euler-bernoulli beam resting on a pasternak-type foundation is studied. the governing equation is solved by using a spectral finite element model (sfem). the solution involves calculating wave and time responses of the beam. the fast fourier transform function is used for temporal discretization of the governing partial differential equation into a set ...
1. introduction increasing of extreme events such as flood, hailstorm, drought, thermal waves, dust storm and other dangerous climatological events, especially in local scale, could be the result of the climatic change over the globe. the characteristics and impacts of severe weather are function of place and time of occurrence. severe weathers are usually accompanied by strong winds and heavy ...
asymptotically exact and nonlocal third order nonlinear evolution equations are derivedfor two counterpropagating surface capillary gravity wave packets in deep water in thepresence of wind flowing over water.from these evolution equations stability analysis ismade for a uniform standing surface capillary gravity wave trains for longitudinal perturbation. instability condition is obtained and g...
Background and Objective: Functional ankle instability (FAI), characterized by feeling of “giving way” and recurrent episodes of ankle sprain, is the most prevalent problem following ankle sprain which causes balance deficits and limitations in activity and sport and can affect health status. Little is known about correlation between self-reported instability-as chief complaint of i...
In the present study, employing David Saunders's standpoints on political instability and its indicators, political instability at the period of Muhammad KhwarazmShah has been surveyed, based on two basic concepts of changes and challenges. The characteristics of political instability at the period mentioned have been identified in four categories of norm change, change of chief executive offic...
Background: Considering the high prevalence of sprain and ankle instability and the disturbing side effects, like decreased stability and increased posture vacillation, it is necessary to perform preventive exercises to avoid such injuries. Thus, the goal of the present research was analyzing the effect of eightweeks of combined exercises on the time of accessing to stability and replacement...
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