Browsing by Author "Ramamurti, V."

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    Dynamic response of railroad vehicle to rail joints and average vertical profile: A time domain approach
    (2007) Gangadharan, K.V.; Sujatha, C.; Ramamurti, V.
    One rigid body and three finite element models have been used to study the dynamic behaviour of a typical Electrical Multiple Unit Trailer coach running on Indian suburban tracks. Following eigenvalue analysis, dynamic responses to input excitation from rail joints and Average Vertical Profile (AVP) have been determined in the time domain, using mode superposition technique. Acceleration and displacement response at Centres of Gravity (eg) of car and bogie have been predicted. The analytical results compare well with experimental results and highlight the need to include superstructure elasticity to predict the dynamic response accurately. Copyright 2007 Inderscience Enterprises Ltd.
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    Dynamic response of railroad vehicle to rail joints and average vertical profile: A time domain approach
    (Inderscience Publishers, 2007) Gangadharan, K.V.; Sujatha, C.; Ramamurti, V.
    One rigid body and three finite element models have been used to study the dynamic behaviour of a typical Electrical Multiple Unit Trailer coach running on Indian suburban tracks. Following eigenvalue analysis, dynamic responses to input excitation from rail joints and Average Vertical Profile (AVP) have been determined in the time domain, using mode superposition technique. Acceleration and displacement response at Centres of Gravity (eg) of car and bogie have been predicted. The analytical results compare well with experimental results and highlight the need to include superstructure elasticity to predict the dynamic response accurately. Copyright © 2007 Inderscience Enterprises Ltd.
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    Dynamic response of railroad vehicles: A frequency domain approach
    (2008) Gangadharan, K.V.; Sujatha, C.; Ramamurti, V.
    A very elaborate Finite Element (FE) model and a rigid body model of a typical electrical multiple unit trailer coach are described. These models were used to find the dynamic response to track irregularities in the frequency domain. The Power Spectral Density (PSD) of track irregularities was used as input to the system. The influence of different track irregularities on dynamic response and coupling between vertical and lateral dynamics was investigated. Extensive experiments were carried out, and analytical results were compared with the measured response. Copyright 2008 Inderscience Enterprises Ltd.
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    Dynamic response of railroad vehicles: A frequency domain approach
    (Inderscience Publishers, 2008) Gangadharan, K.V.; Sujatha, C.; Ramamurti, V.
    A very elaborate Finite Element (FE) model and a rigid body model of a typical electrical multiple unit trailer coach are described. These models were used to find the dynamic response to track irregularities in the frequency domain. The Power Spectral Density (PSD) of track irregularities was used as input to the system. The influence of different track irregularities on dynamic response and coupling between vertical and lateral dynamics was investigated. Extensive experiments were carried out, and analytical results were compared with the measured response. Copyright © 2008 Inderscience Enterprises Ltd.