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Experimental and numerical studies on seismic behaviour of exterior beam-column joints
P. Asha,R. Sundararajan 사단법인 한국계산역학회 2014 Computers and Concrete, An International Journal Vol.13 No.2
A nonlinear finite element analysis using ANSYS is used to evaluate the seismic behavior of reinforced concrete exterior beam-column joints. The behavior of the finite element models under cyclic loading is compared with the experimental results. Two beam-column joint specimens (SH and SHD) with square hoop confinement in joint and throughout the column with detailing as per IS 13920 are studied. The specimen SHD was provided with additional diagonal bars from column to beam to relocate the plastic hinge formation from beam-column interface. The load-displacement relationship, joint shear stress and strain in beam obtained from numerical study showed good agreement with the experimental results. This investigation proves that seismic behaviour of reinforced concrete beam-column joints under reversed cyclic loading can be evaluated successfully using finite element modeling and analysis.
Development of Carbon Nanotubes and Polymer Composites Therefrom
P.K. Jain,Y.R. Mahajan,G. Sundararajan,A.V. Okotrub,N.F. Yudanov,A.I. Romanenko 한국탄소학회 2002 Carbon Letters Vol.3 No.3
Multiwall carbon nanotubes (MWNT) were produced using the arc-discharge graphite evaporation technique. Composite films were developed using MWNT dispersed in polystirol polymer. In the present work, various properties of the polymeric thin film containing carbon nanotubes were investigated by optical absorption, electrical resistivity and the same have been discussed.
Murugaiyan, V.,Saravanane, R.,Sundararajan, T. Techno-Press 2009 Geomechanics & engineering Vol.1 No.4
One-dimensional soil-column studies were carried out to understand the interaction of three industrial effluents namely amino acid ('highly acidic'), surfactant ('highly organic') and pharmaceutical ('organic and toxic') on the physicochemical behavior, index properties and shear strength of bentonite due to artificial contamination extending to nearly 300 days. Changes in inorganic and organic pollutants present in the effluents due to the interaction of the above effluents and soil were assessed to understand the physico-chemical behaviour. Batch and continuous modes of operation, 8 hrs and 16 hrs Hydraulic Retention Time [HRT] and 25%, 50% concentrations of effluents, were the parameters considered. Amino acid, surfactant and pharmaceutical effluents have shown a high variation in pH (7 to 8) after artificial contamination on bentonite that is their original characteristics of the above effluents have been completely reversed. Further, it is found that the shear strength of bentonite has reduced by about 20%, and with respect to liquid limit and plastic limit shows an increasing trend with time within the period of contamination.
Development of Carbon Nanotubes and Polymer Composites Therefrom
Jain, P.K.,Mahajan, Y.R.,Sundararajan, G.,Okotrub, A.V.,Yudanov, N.F.,Romanenko, A.I. Korean Carbon Society 2002 Carbon Letters Vol.3 No.3
Multiwall carbon nanotubes (MWNT) were produced using the arc-discharge graphite evaporation technique. Composite films were developed using MWNT dispersed in polystirol polymer. In the present work, various properties of the polymeric thin film containing carbon nanotubes were investigated by optical absorption, electrical resistivity and the same have been discussed.