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JournalISSN: 0975-3540

International Journal of Vehicle Structures & Systems 

MAFTREE
About: International Journal of Vehicle Structures & Systems is an academic journal published by MAFTREE. The journal publishes majorly in the area(s): Materials science & Diesel fuel. It has an ISSN identifier of 0975-3540. Over the lifetime, 546 publications have been published receiving 1616 citations.


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Journal ArticleDOI
TL;DR: In this article, the authors present an overview of the current features and applications for components of rail vehicle-track dynamic modeling and few challenges which these applications find while doing the simulations, and analyse the best practice for the optimum performance of suspension components, wheel-rail contact conditions and modeling inputs such as track geometry.
Abstract: Rail vehicle-track modeling and simulations, in past many years is developed a long way from its origins as a research tool. This paper presents an overview of the current features and applications for components of rail vehicle-track dynamic modeling and few challenges which these applications find while doing the simulations. This paper discusses appropriate modeling choices for different applications and analyse the best practice for the optimum performance of suspension components, wheel-rail contact conditions and modeling inputs such as track geometry.

43 citations

Journal ArticleDOI
TL;DR: A semi-active suspension system using Magnetorheological (MR) damper overcomes all the inherent limits of passive and active suspension systems and combines the advantages of both.
Abstract: A semi-active suspension system using Magnetorheological (MR) damper overcomes all the inherent limits of passive and active suspension systems and combines the advantages of both. This paper gives a concise introduction to the suspension system of a passenger vehicle which is presented along with the analysis of semi-active suspension system using MR fluid dampers based on Bingham model. MR dampers are filled with MR fluids whose properties can be controlled by applying voltage signal. To further prove the statement, a quarter car model with two degrees of freedom has been used for modeling the suspension system the sprung mass acceleration of passive suspension system has been compared with the semi-active suspension system using the Bingham model for MRF damper. Simulink/MATLAB is used to carry out the simulation. The results drawn show that the semi-active suspension system performed better than the passive suspension system in terms of vehicle stability.

33 citations

Journal ArticleDOI
TL;DR: This paper is an attempt to cover various modelling and simulation methods of the railway bogie and coach adopted by various researchers to understand the dynamic behaviour of the railways coach.
Abstract: Railway vehicle is one of the rigorously developing passenger and goods carrier in the past few centuries. Dynamic behaviour of the railway coach is a vital aspect in its design and also in terms of passenger safety and ride comfort. Dynamic response includes both deterministic and probabilistic analyses. Modal, harmonic and transient dynamic analysis is part of deterministic analyses, whereas random response using spectrum methods and power spectral density (PSD) is a probabilistic approach. This paper is an attempt to cover various modelling and simulation methods of the railway bogie and coach adopted by various researchers to understand the dynamic behaviour of the railway coach. Further, the research findings of various dynamic parameters obtained theoretically and practically against different inputs like sinusoidal and random inputs to the car body have been discussed. This forms a basis in understanding the development of railway coach design when one is interested in carrying out free and forced vibration analysis on the coach, as well as assists to optimize various design parameters of components like bogie, car body and suspension elements in terms of vehicle dynamics.

32 citations

Journal ArticleDOI
TL;DR: In this article, the emissions of Kirloskar Direct Injection 4-stroke Diesel engine, single cylinder air cooled, 4.4 kW, constant speed at 1500 rpm, compression ratio 17.5:1 with different blends of diesel refined sunflower oil is analysed.
Abstract: In this study, the emissions of Kirloskar Direct Injection 4-stroke Diesel engine, single cylinder air cooled, 4.4 kW, constant speed at 1500 rpm, compression ratio 17.5:1 with different blends of diesel refined sunflower oil is analysed. Methyl Esters of refined sunflower was trans-esterified before blending with diesel. The main objective of this experiment is to study the NOx, CO, HC and smoke emissions by varying the injection timing and load. The experiments were conducted with various blends - BRSF10, BRSF30, BRSF40, at different pressures (180 bar, 210 bar, and 240 bar) and different level of loads (0%, 25%, 50%, 75%, 100%). A 3-hole nozzle was used to inject the fuel. The combustion results were studied using AVL gas analyser. The results show that engine temperature decreases at higher loads by 2°, NOx and CO decreases and there was a marginal increase in HC and the exhaust temperature.

29 citations

JournalDOI
TL;DR: In this article, the authors focused on the assessment of acceleration-induced injuries of lower extremities during a mine blast underneath an armoured vehicle, where the occupant's torso is shielded from the direct effects of the mine blast.
Abstract: Anti tank (AT) mines and improvised explosive devices (IED) pose a serious threat to the occupants of infantry vehicles. The detonating explosives create shock waves, which induce large acceleration impulses and deformations in the vehicular structure. These impulse loads are transmitted to the occupant through vehicle-occupant contact interfaces such as the floor and seat. If the resulting loads and accelerations transmitted to the occupant are not sufficiently attenuated to values below thresholds set by occupant injury criteria, they can lead to severe injury and fatality. The occupant’s feet are usually in direct contact with the floor and therefore lower extremity injuries are very common during AT and IED explosions. This study focuses on the assessment of acceleration-induced injuries of lower extremities during a mine blast underneath an armoured vehicle, where the occupant's torso is shielded from the direct effects of the mine blast. Numerical models of the mine blast experimental test set-up are created using the dynamic finite element code LS-DYNA®. A numerical HYBRID III dummy is used to simulate the occupant’s response. Simulations results are compared with experimental data to validate the use of the HYBRID III dummy for injury assessment in such an application. The occupant lower extremity response to varying magnitudes of vehicle floor impact velocities caused by mine blasts is parametrically studied to lend insight into the maximum sustainable and survivable loading conditions as well as the design of protective structures that can be incorporated into the vehicle structure to attenuate these loads. Characteristic trends in the occupant response are used for predicting the response for new loading conditions. The effect of initial position of the occupant's lower extremities on the impact response and associated injury levels is also studied.

28 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
202349
2022172
20214
202025
201958
201868