Theoretical Formulation of Amplifier–Vehicle–Bridge System Based on Sophisticated Vehicle Model

2021 ◽  
Author(s):  
Judy P. Yang
Keyword(s):  
Vehicle Model ◽  
Theoretical Formulation ◽  
Bridge System

Dynamic Analysis of Coupled Vehicle-Bridge System with Uniformly Variable Speed

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Li Wei-zhen ◽  
Chen Chang-ping ◽  
Mao Yi-qi ◽  
Qian Chang-zhao
Keyword(s):  
Degrees Of Freedom ◽  
Inertia Force ◽  
Variable Speed ◽  
Vehicle Model ◽  
Response Curves ◽  
Mass System ◽  
Moving Vehicle ◽  
Dynamical Characteristics ◽  
Runge Kutta Method ◽  
Bridge System

AbstractIn this paper, a planar biaxial vehicle model with four degrees of freedom is presented based on spring-damping-mass system theory. By using Runge-Kutta method, the dynamic characteristics of a simply support bridge acting by moving vehicle with uniform variable speed are analyzed, and the effects of inertia force, relative acceleration and initial velocity are taken into consideration in the present research. The time-deflection response curves of the bridge under the variation of initial speed and acceleration are analyzed. Some valuable results are found which can provide a theoretical direction for the consideration of dynamical characteristics in design of bridge system.

Anti-Windup Control for an Air-Breathing Hypersonic Vehicle Model

2005 ◽  
Author(s):  
Kevin P. Groves ◽  
Andrea Serrani ◽  
Stephen Yurkovich ◽  
Michael A. Bolender ◽  
David B. Doman
Keyword(s):  
Hypersonic Vehicle ◽  
Vehicle Model ◽  
Air Breathing

scholarly journals Empirical Study of Car Crash Simulation Analysis within the Development Phase

2019 ◽  
Vol 1 (1) ◽  
pp. 2843-2852 ◽  
Author(s):  
Naouress Fatfouta ◽  
Julie Stal-Le Cardinal ◽  
Christine Royer
Keyword(s):  
Empirical Study ◽  
Qualitative Analysis ◽  
Simulation Analysis ◽  
Development Phase ◽  
Vehicle Model ◽  
Crash Simulation ◽  
Automotive Company ◽  
Car Crash ◽  
Industrial Context ◽  
Current Practices

AbstractCar crash simulation analysis is an important phase within the vehicle development. It intends to analyse the crashworthiness of the vehicle model and examine the level of passive security. However, this activity is not trivial because of the considerable collaboration within the project, the large amount of analysed and exchanged data and a high exigency. Consequently, a solution to assist, ease and reduce the time of the process is desired.To study the current practices followed in the car crash simulation analysis an empirical study has been conducted. This study has been applied within the simulation analysis team, in the development phase, within an automotive company. This paper describes a qualitative analysis of the industrial context and diagnoses the dysfunctions in the current practices. This paper also highlights the current challenges encountered in the car crash simulation analysis.

scholarly journals Random Assignment Problems on 2d Manifolds

2021 ◽  
Vol 183 (2) ◽  
Author(s):  
D. Benedetto ◽  
E. Caglioti ◽  
S. Caracciolo ◽  
M. D’Achille ◽  
G. Sicuro ◽  
...  
Keyword(s):  
Assignment Problem ◽  
Unit Area ◽  
Constant Term ◽  
Beltrami Operator ◽  
Explicit Calculation ◽  
Dimensional Manifold ◽  
Two Dimensional ◽  
Random Assignment ◽  
Assignment Problems ◽  
Theoretical Formulation

AbstractWe consider the assignment problem between two sets of N random points on a smooth, two-dimensional manifold $$\Omega $$ Ω of unit area. It is known that the average cost scales as $$E_{\Omega }(N)\sim {1}/{2\pi }\ln N$$ E Ω ( N ) ∼ 1 / 2 π ln N with a correction that is at most of order $$\sqrt{\ln N\ln \ln N}$$ ln N ln ln N . In this paper, we show that, within the linearization approximation of the field-theoretical formulation of the problem, the first $$\Omega $$ Ω -dependent correction is on the constant term, and can be exactly computed from the spectrum of the Laplace–Beltrami operator on $$\Omega $$ Ω . We perform the explicit calculation of this constant for various families of surfaces, and compare our predictions with extensive numerics.

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