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Palli, Srihari
- Challenges in Rail Vehicle-Track Modeling and Simulation
Abstract Views :274 |
PDF Views:194
Authors
Affiliations
1 Centre for Transportation Systems, Indian Institute of Technology, Roorkee, IN
2 Mech. Engg. Dept., Maharishi Markandeshwar University, Mullana, IN
3 Mech. Engg. Dept., Indian Institute of Technology, Roorkee, IN
4 Mech. Engg. Dept., Aditya Institute of Technology and Management, Tekkali, IN
1 Centre for Transportation Systems, Indian Institute of Technology, Roorkee, IN
2 Mech. Engg. Dept., Maharishi Markandeshwar University, Mullana, IN
3 Mech. Engg. Dept., Indian Institute of Technology, Roorkee, IN
4 Mech. Engg. Dept., Aditya Institute of Technology and Management, Tekkali, IN
Source
International Journal of Vehicle Structures and Systems, Vol 7, No 1 (2015), Pagination: 1-9Abstract
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.Keywords
Vehicle Dynamics, Modeling and Simulation, Rail Vehicle, Suspension Components, Track Models.Full Text
- Dynamic Analysis of Indian Railway Integral Coach Factory Bogie
Abstract Views :289 |
PDF Views:156
Authors
Affiliations
1 Mech. Engg. Dept., Aditya Institute of Technology and Management, Tekkali, IN
2 Mech. Engg. Dept., Andhra University, College of Engineering, Visakhapatnam, IN
3 Mech. Engg. Dept., Maharishi Markandeshwar University, Mullana, IN
1 Mech. Engg. Dept., Aditya Institute of Technology and Management, Tekkali, IN
2 Mech. Engg. Dept., Andhra University, College of Engineering, Visakhapatnam, IN
3 Mech. Engg. Dept., Maharishi Markandeshwar University, Mullana, IN
Source
International Journal of Vehicle Structures and Systems, Vol 7, No 1 (2015), Pagination: 16-20Abstract
Dynamic response of railway coach is a key aspect in the design of coach. Indian railway sleeper and 3 tier AC coaches consist of two railway bogies, where the central distance of the center of gravity between the bogies is 14.9 m. Analysis of railway bogie forms a basis for investigating the behaviour of the coach as a whole. The current work carried out is, vehicle dynamic response in terms of Eigen frequency modal analysis and harmonic analysis of a Indian railway 6 Ton Integral Coach Factory (ICF) bogie using finite element (FE) method. The entire bogie model is discretized using solid92 tetrahedral elements. The primary and secondary suspension systems are modelled as COMBIN14 elements in the FE model of the bogie. Modal analysis of the bogie model using Block Lanczos method in ANSYS is carried out to extract first few natural modes of vibration of the bogie. The roll mode frequency attained in Modal analysis is in good agreement with the fundamental frequency calculated analytically. Sinusoidal excitation is fed as input to bottom wheel points to analyse the harmonic response of the bogie in terms of displacement at different salient locations. Harmonic response results reveal that the bogie left and right locations are more vulnerable than the locations near the centre of gravity of the bogie.Keywords
Dynamic Response, Modal Analysis, Harmonic Analysis, Finite Element Model, ANSYS.Full Text
- Stress and Vibrational Analysis of an Indian Railway RCF Bogie
Abstract Views :277 |
PDF Views:177
Authors
Affiliations
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University) Mullana, IN
2 Mech. Engg. Dept., AITAM, Tekkali, Andhra Pradesh, IN
3 Mech. Engg. Dept., Andhra University College of Engg., Visakhapatnam, Andhra Pradesh, IN
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University) Mullana, IN
2 Mech. Engg. Dept., AITAM, Tekkali, Andhra Pradesh, IN
3 Mech. Engg. Dept., Andhra University College of Engg., Visakhapatnam, Andhra Pradesh, IN
Source
International Journal of Vehicle Structures and Systems, Vol 9, No 5 (2017), Pagination: 296-302Abstract
In the present work, static and dynamic finite element analyses are carried out on an Indian railway 6 ton RCF sleeper bogie. The geometrical CAD model of railway vehicle has been developed in UG-NX7.5 and has been exported to ANSYS12.1 package where finite element modelling and the required static and dynamic analyses have been performed. For dynamic response, modal, harmonic and transient dynamic analyses are carried out. First few natural modes of vibration of the bogie are extracted in Eigen frequency analysis and it is observed that the roll mode attained at a frequency which is well matched with the fundamental natural frequency calculated analytically. The harmonic peaks obtained are matching well with the natural frequencies obtained in modal analysis. Response to the ground excitation when the bogie passes over a bump is simulated in transient analysis.Keywords
Railway Bogie, Static Analysis, Transient Analysis, Finite Element Modelling, Laden Sleeper, Unladen Sleeper.Full Text
- Modernization of Railway Track with Composite Sleepers
Abstract Views :469 |
PDF Views:426
Authors
Affiliations
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University) Mullana, IN
2 Mech. Engg. Dept., AITAM, Tekkali, Andhra Pradesh, IN
3 Dept. of Mech. Engg, Amity School of Engineering and Technology, Amity University, Uttar Pradesh, Noida, IN
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University) Mullana, IN
2 Mech. Engg. Dept., AITAM, Tekkali, Andhra Pradesh, IN
3 Dept. of Mech. Engg, Amity School of Engineering and Technology, Amity University, Uttar Pradesh, Noida, IN
Source
International Journal of Vehicle Structures and Systems, Vol 9, No 5 (2017), Pagination: 321-329Abstract
Railway sleeper is an important component of railway network. Its clamping is also a critical issue in order to avoid any slippage and to maintain the alignment or cross level. Earlier, railway network used wooden sleepers worldwide. Further steel sleepers in parallel with wooden sleepers have been employed. Both are replaced with concrete sleepers with the advancements. With the modernization, the idea of railway sleepers with fibre composite materials has been introduced which is accepted worldwide due to its unique features over any other type of sleeper. This paper discuss about different composite material sleepers and review the important features associated with them i.e. composition, properties, advantages and limitations.Keywords
Railway Sleeper, Wooden Sleeper, Steel Sleeper, Concrete Sleeper, Composite Sleeper, FFU Synthetic Sleeper.Full Text
- Rail Vehicle Modelling and Simulation using Lagrangian Method
Abstract Views :299 |
PDF Views:145
Authors
Affiliations
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University), Mullana, Haryana, IN
2 Dept. of Mech. Engg, Amity School of Engg. and Tech., Amity University, Uttar Pradesh, Noida, IN
3 Mech. Engg. Dept., AITAM, Tekkali, Andra Pradesh, IN
1 Mech. Engg. Dept., Maharishi Markandeshwar (Deemed to be University), Mullana, Haryana, IN
2 Dept. of Mech. Engg, Amity School of Engg. and Tech., Amity University, Uttar Pradesh, Noida, IN
3 Mech. Engg. Dept., AITAM, Tekkali, Andra Pradesh, IN
Source
International Journal of Vehicle Structures and Systems, Vol 10, No 3 (2018), Pagination: 188-194Abstract
Formulation of vehicle dynamics problem is dealt either with Newton’s method or Lagrange’s method. This paper provides a broad understanding of Lagrange’s method applied to railway vehicle system. The Lagrange’s method of analytical dynamics provides a complete set of equations through differentiations of a function called Lagrangian function which includes kinetic and potential energy with respect to independent generalised coordinates assigned to the system. This paper also discusses rigid body rotational dynamics along with the concept of generalised coordinates (constrained and un-constrained) and generalised forces in detail.Keywords
Lagrangian Function, Euler’s Angle, Newton’s Method, Generalized Forces, Generalized Coordinates, Body Fixed Axes.Full Text
References
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- R.C. Sharma. 2013. Stability and eigenvalue analysis of an Indian railway general sleeper coach using Lagrangian dynamics, Int. J. Vehicle Structures & Systems, 5(1), 9-14. http://dx.doi.org/10.4273/ijvss.5.1.02.
- R.C. Sharma. 2017. Ride, eigenvalue and stability analysis of three-wheel vehicle using Lagrangian dynamics, Int. J. Vehicle Noise & Vibration, 13(1), 13-25. https://doi.org/10.1504/IJVNV.2017.086021.
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- R.C. Sharma. 2016. Evaluation of passenger ride comfort of Indian rail and road vehicles with ISO 2631-1 standards: Part 1 - Mathematical modeling, Int. J. Vehicle Structures & Systems, 8(1), 1-6. https://doi.org/10.4273/ijvss.8.1.01.
- R.C. Sharma. 2016. Evaluation of passenger ride comfort of Indian rail and road vehicles with ISO 2631-1 standards: Part 2 - Simulation, Int. J. Vehicle Structures and Systems, 8(1), 7-10. https://doi.org/10.4273/ijvss.8.1.02.
- S.K. Sharma and A. Kumar. 2017. Impact of electric locomotive traction of the passenger vehicle ride quality in longitudinal train dynamics in the context of Indian railways, Mechanics & Industry, 18(2), 222. https://doi.org/10.1051/meca/ 2016047.
- S.K. Sharma and A. Kumar. 2017. Ride performance of a high speed rail vehicle using controlled semi active suspension system, Smart Materials and Structures, 26(5), 55026.
- S.K. Sharma and A. Kumar. 2017. Ride comfort of a higher speed rail vehicle using a magnetorheological suspension system, Proc. IMechE, Part K: J. Multi-body Dynamics, 232(1), 32-48. https://doi.org/10.1177/1464419317706873
- S. K. Sharma, R.C. Sharma, A. Kumar and S. Palli, 2015. Challenges in rail vehicle-track modelling and simulation. Int. J. Vehicle Structures and Systems, 7(1), 1-9. http://dx.doi.org/10.4273/ijvss.7.1.01.
- A Review on Dynamic Analysis of Rail Vehicle Coach
Abstract Views :363 |
PDF Views:221
Authors
Affiliations
1 Mechanical Engineering Dept., AITAM, Tekkali, Andhra Pradesh, IN
2 Mechanical Engineering Department, Andhra University College of Engineering, Andhra Pradesh, IN
3 Dept. of Mech. Engg, Amity School of Engg. and Tech., Amity University, Uttar Pradesh, Noida, IN
4 Mechanical Engineering Department, Maharishi Markandeshwar (Deemed to be University), Mullana, IN
1 Mechanical Engineering Dept., AITAM, Tekkali, Andhra Pradesh, IN
2 Mechanical Engineering Department, Andhra University College of Engineering, Andhra Pradesh, IN
3 Dept. of Mech. Engg, Amity School of Engg. and Tech., Amity University, Uttar Pradesh, Noida, IN
4 Mechanical Engineering Department, Maharishi Markandeshwar (Deemed to be University), Mullana, IN
Source
International Journal of Vehicle Structures and Systems, Vol 10, No 3 (2018), Pagination: 204-211Abstract
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.Keywords
Railway Coach, Review, Dynamic Analysis, Modelling, Simulation, Wheel-Rail System.Full Text
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