Results 181 to 190 of about 1,461,299 (208)

Equivalent mechanical analog for dynamic analysis of pure conical tanks

Thin-Walled Structures, 2006
Abstract This study is motivated by the lack of information regarding seismic analysis and design of liquid-filled conical tanks. The main challenge in this type of fluid–structure interaction problem is the estimation of the forces associated with the hydrodynamic pressure resulting from the vibration of the structure. A simplified mechanical analog
A.A. El Damatty, A.M.I. Sweedan
openaire   +1 more source

Equivalence Principle as Applied to Conical Arrays

1979
Abstract : The program 'Equivalence Principle As Applied To Conical Arrays' has been successfully completed. The equivalence principle pattern synthesis technique has been used to provide aperture distributions for an experimental conical array. The array consisted of thirty-seven crossed-slot elements on a cone of half-angle 10.25 degrees and was ...
openaire   +1 more source

Equivalent Models of Pure Conical Tanks under Vertical Ground Excitation

Journal of Structural Engineering, 2005
Elevated water tanks are commonly built with superstructure vessels that have a truncated conical shape. As a result of the inclination of the vessel’s walls, the axisymmetric hydrodynamic pressure that is associated with vertical ground accelerations develops hoop and axial meridional stresses. The purpose of the current study is to establish a simple
A. M. Sweedan, A A. El Damatty
openaire   +1 more source

Conically equivalent convex sets and applications

2010
Given a normed space X and a cone K in X, two closed, convex sets A and B in X* are said to be K-equivalent if the support functions of A and B coincide on K. We characterize the greatest set in an equivalence class, analyze the equivalence between two sets, find conditions for the existence and the uniqueness of a minimal set, extending previous ...
ELISA CAPRARI, ZAFFARONI, Alberto
openaire   +3 more sources

Diagnostics of the railway track and rolling stock interaction system according to the parameters of ride comfort and equivalent taper

Proceedings of Petersburg Transport University
Purpose: to identify the influence of the geometric parameters of wheel sets and rail track on the smoothness of the ride and the level of passenger comfort for an automated diagnostic system.
Alexander Gaponenko, Artem Kiselev
semanticscholar   +1 more source

Research on the effect of vertical installation angle and layout of anti-yaw damper on the dynamic performance of high-speed EMUs

Journal of Vibration and Control
With the increase in operating speed of high-speed electric multiple units (EMUs), the regulatory role of anti-yaw dampers in vehicle operational stability has become critical.
Yayun Qi, Jiacheng Wang, Huanyun Dai, Sihao Luo, Yan Zheng, Huadong Jing   +5 more
semanticscholar   +1 more source

A study on the effect of inerters in the motor elastic suspension on the stability of bogies in high-speed trains

Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit
Inerters are widely used in structural vibration systems, but there is little research on their use in the elastic-suspension of motors in high-speed train bogies.
Yayun Qi, Peng Ao, Huanyun Dai, Hua Liu, Hao Wu, Gangzhi Tang   +5 more
semanticscholar   +1 more source

Sensitivity Analysis of the Conical-Shaped Equivalent Model of a Bolted Joint

Journal of Mechanical Design, 2003
In this paper, the conical-shaped equivalent model for a bolted joint is considered. In particular, the governing equations for this model are made non-dimensional for the purposes of conducting sensitivity analysis. From this work, a plot of the dimensionless spring-rate of the clamped material is generated for all reasonable designs for which the ...
openaire   +1 more source

Multiobjective Optimization of the Worn Turnout Rail Profile Driven by a Hybrid Intelligent Algorithm

Transportation Research Record
When high-speed trains pass through worn turnouts, the severe wear of the rails often leads to the carbody lateral acceleration (CLA) exceeding the standard.
Qian Xiao, Yihang Yang, Chao Chang
semanticscholar   +1 more source

Dynamic analysis of ultra-low frequency carbody swaying for a high-speed rail vehicle: Causes and measures

Journal of Vibration and Control
This paper investigated on the ultra-low frequency carbody swaying (ULFCS) of a high-speed railway vehicle through field tests and numerical simulations.
Jianfeng Sun, Jijun Gong, Maoru Chi, Yonghua Jiang, Weidong Jiao, S. E   +5 more
semanticscholar   +1 more source