نتایج جستجو برای: dynamic impact

تعداد نتایج: 1143868  

A. Mortezaei H. Naderpour, Rui C. Barros S.M. Khatami

Building pounding occurs between two adjacent buildings with small gap or without sufficient separation distance. It leads to damage buildings during earthquake due to impact. Many researchers have investigated building pounding based on impact force reduction and energy dissipation increase, when two buildings collide with each other. In numerical investigations, using specific link element, i...

ژورنال: Journal of Railway Research 2015
Makoto Ishida, ,

This topic is very traditional and basically has been concerned for a long time. A lot of sophisticated vehicle/track interaction model and track dynamic deterioration model have been developed so far. The author also developed a track settlement progress model comprising a vehicle/track interaction model and a track settlement law. Hanging sleepers are usually caused more or less by the dyn...

Journal: :international journal of transportation engineereing 2014
krishna saw b. k. katti g. joshi

rapid urban growth is resulting into increase in travel demand and private vehicle ownership in urban areas. in the present scenario the existing infrastructure has failed to match the demand that leads to traffic congestion, vehicular pollution and accidents. with traffic congestion augmentation on the road, delay of commuters has increased and reliability of road network has decreased. four s...

A novel computational fluid dynamics and molecular kinetic theory (CFD-MK) method was developed to simulate the impingement of a nanodroplet onto a solid surface. A numerical solution of the Navier–Stokes equation using a volume-of-fluid (VOF) technique was used to model nanodroplet deformation. Dynamic contact angle during droplet impact was obtained by molecular kinetic theory. This dynamic c...

Journal: :اقتصاد و توسعه کشاورزی 0
محمود صبوحی علیه آزادگان

in the current study, the generalized maximum entropy (gme) and dynamic positive equilibrium problem (dpep) approach were introduced and used to estimate the set of dynamic supply functions of selected annual crops in mashhad-chenaran plain during the years 2003-2011.in addition, the allen and morishima elasticities of derived demand inputs, and supply elasticity of the crops were determined. t...

A combined finite/ discrete element method is presented for modelling of composite specimens subjected to dynamic/impact loadings. The main task is set on developing an algorithm for simulation of potential bonding and debonding/delamination phenomena during impact or general dynamic loading conditions. In addition, full fracture analysis can also be performed. The proposed approach adopts a ge...

In this paper, symmetric water entry of twin wedges is investigated for deadrise angle of 30 degree. Three numerical simulation of a symmetric impact, considering rigid body dynamic equations of motion in two-phase flow is presented. The two-phase flow around the wedges is solved by Finite Element based on Finite Volume method (FEM-FVM) which is used in conjunction with Volume of Fluid (VOF) sc...

براتی, امیرحسین, فرحان, ویدا, لطفی, غلامرضا, محمودی, اصغر,

Objective: The main objective of the study was to investigate the effect of factitious and true neurofeedback training on the balance performance of active males. Methods: Twenty physical education male students were selected through purposive sampling and were randomly divided into real neurofeedback and sham neurofeedback groups (with mean age 21.38±1.32 years and mean weight of 71.01...

Journal: Iranian Economic Review 2017

This study examines the dynamic relationship between foreign direct investment (FDI) and total factor productivity having controlled for other channels of external openness: exports and imports in four ASEAN countries: Indonesia, Malaysia, Singapore, and Thailand. We employ the panel data analysis PDA (fixed effect and dynamic panel models) as well as the panel cointegration and Granger causali...

A novel computational fluid dynamics and molecular kinetic theory (CFD-MK) method was developed to simulate the impingement of a nanodroplet onto a solid surface. A numerical solution of the Navier–Stokes equation using a volume-of-fluid (VOF) technique was used to model nanodroplet deformation. Dynamic contact angle during droplet impact was obtained by molecular kinetic theory. This dynamic c...

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