1. Journal Articles
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/1/6
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Item Response of circular bridge decks to moving vehicles(1977) Ramakrishnan, R.; Kunukkasseril, V.X.This paper discusses the dynamic response of a curved bridge deck to a moving vehicle. The bridge deck is idealized as a set of annular sector plates and circular rings rigidly jointed together. On the basis of classical plate and ring theories a method has been developed to obtain the response to a moving vehicle idealized as a spring mass system. After obtaining the normal modes and frequencies and establishing the orthogonality conditions, the problem of the forced motion of the deck is solved by the method of spectral representation. Numerical results have been presented to illustrate the effect of several vehicle and bridge parameters on the response. Copyright 1977 John Wiley & Sons, LtdItem Free vibration of stiffened circular bridge decks(1976) Ramakrishnan, R.; Kunukkasseril, V.X.An analytical method for determining the free vibration frequencies of stiffened curved bridge decks is presented. The bridge deck is idealized as a system consisting of a number of concentric annular plate and circular ring segments rigidly connected to each other. From the closed form solutions for free vibration of the individual plate segments and rings, the frequency of the system is obtained by imposing the edge and continuity conditions. Results for several cases are furnished and a comparison with experimental results is also presented. 1976.Item Asymmetric response of circular plates(1974) Ramakrishnan, R.; Kunukkasseril, V.X.This paper deals with the response of thin elastic circular plates to asymmetric loadings. The normal mode method of analysis is used. The transient reponse to an impact force away from the centre and to a concentrated impulse moment at any point are investigated. A comparison of analytical results with those from experimental study of response to an impact force is included. It is considered that the method of analysis developed can be used to determine design stresses. 1974 Academic Press Inc.