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S.R. Satish Kumar

Other affiliations: Nagoya University
Bio: S.R. Satish Kumar is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Finite element method & Pier. The author has an hindex of 10, co-authored 18 publications receiving 306 citations. Previous affiliations of S.R. Satish Kumar include Nagoya University.

Papers
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Journal ArticleDOI
TL;DR: Various approaches to include SSI in analysis of structures and guidelines outlined in prominent seismic codes are summarized and a review of contemporary research in field of SSI is presented.

80 citations

Journal ArticleDOI
TL;DR: The pseudodynamic test is increasingly being used for testing structures under seismic loads as mentioned in this paper, due to the limited capacity of available equipment and also to economic reasons, testing is often required to be carried out on scaled models rather than full-scale structures.
Abstract: The pseudodynamic test is increasingly being used for testing structures under seismic loads. Due to the limited capacity of available equipment and also to economic reasons, testing is often required to be carried out on scaled models rather than full-scale structures. Although the similitude laws are well established, the selection of a suitable set of scale factors is often complicated due to the infinite number of possible sets. The various aspects to be considered in selecting a suitable set of scale factors are clarified. The question of possible differences in test results due to a difference in testing procedure is answered by means of tests on identical specimens using three typical procedures. It was found that the results obtained can be considered to be identical for practical purposes.

58 citations

Journal ArticleDOI
TL;DR: In this article, a single-bay ten-storey concentric braced frame with diagonal non-buckling bracing is chosen for studying their effect during earthquake loadings and a nonlinear time history analysis was carried out using SAP2000 to study the variation of maximum base shear, roof displacement, inter storey drift, damage index and stresses in various members due to the El Centro earthquake accelerogram.

44 citations

Journal ArticleDOI
TL;DR: In this paper, a new and efficient connection is proposed which is easy to fabricate and convenient for erection, which employs channel connectors welded to the column flange and bolted to the beam to transfer beam flange forces into the column webs thereby avoiding the need to provide internal diaphragms.

43 citations

Journal ArticleDOI
TL;DR: In this article, an evolutionary-degrading hysteretic model is presented which can be used to simulate the seismic response of thin-walled steel structures and the degradation of strength and stiffness is related to the concept of the damage index.

33 citations


Cited by
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01 Jan 1990
TL;DR: The ASCE/SEI 7-05 standard as discussed by the authors provides a complete update and reorganization of the wind load provisions, expanding them from one chapter into six, and includes new ultimate event wind maps with corresponding reductions in load factors.
Abstract: Minimum Design Loads for Buildings and Other Structures provides requirements for general structural design and includes means for determining dead, live, soil, flood, wind, snow, rain, atmospheric ice, and earthquake loads, as well as their combinations, which are suitable for inclusion in building codes and other documents. This Standard, a revision of ASCE/SEI 7-05, offers a complete update and reorganization of the wind load provisions, expanding them from one chapter into six. The Standard contains new ultimate event wind maps with corresponding reductions in load factors, so that the loads are not affected, and updates the seismic loads with new risk-targeted seismic maps. The snow, live, and atmospheric icing provisions are updated as well. In addition, the Standard includes a detailed Commentary with explanatory and supplementary information designed to assist building code committees and regulatory authorities. Standard ASCE/SEI 7 is an integral part of building codes in the United States. Many of the load provisions are substantially adopted by reference in the International Building Code and the NFPA 5000 Building Construction and Safety Code. Structural engineers, architects, and those engaged in preparing and administering local building codes will find this Standard an essential reference in their practice. Note: New orders are fulfilled from the second printing, which incorporates the errata to the first printing.

974 citations

Patent
05 Mar 2010
TL;DR: In this article, the amorphous silicon film is formed using silane gas diluted with hydrogen and crystallization is attained in the crystallization process even with the continuous formation of the base film through the polysilicon film in the single film forming chamber.
Abstract: At present, a forming process of a base film through an amorphous silicon film is conducted in respective film forming chambers in order to obtain satisfactory films. When continuous formation of the base film through the amorphous silicon film is performed in a single film forming chamber with the above film formation condition, crystallization is not sufficiently attained in a crystallization process. By forming the amorphous silicon film using silane gas diluted with hydrogen, crystallization is sufficiently attained in the crystallization process even with the continuous formation of the base film through the amorphous silicon film in the single film forming chamber.

185 citations

Patent
16 Aug 2004
TL;DR: In this paper, the TFTs are fabricated using an active layer crystallized by making use of nickel, and the gate electrodes are comprising tantalum, and a heat treatment is performed to getter nickel element in the active layer and to drive it into the source/drain regions.
Abstract: There are disclosed TFTs that have excellent characteristics and can be fabricated with a high yield. The TFTs are fabricated, using an active layer crystallized by making use of nickel. Gate electrodes are comprising tantalum. Phosphorus is introduced into source/drain regions. Then, a heat treatment is performed to getter nickel element in the active layer and to drive it into the source/drain regions. At the same time, the source/drain regions can be annealed out. The gate electrodes of tantalum can withstand this heat treatment.

174 citations

Journal ArticleDOI
TL;DR: In this article, the ground motion parameters than can be assumed as structural and non-structural damage measures are discussed, followed by a discussion of the damage measures relating to simple (linear) and more complex (non-linear) structural responses.
Abstract: This article reviews the ground motion parameters than can be assumed as structural and non-structural damage measures. Measures of seismic damage potential based on ground motion records are first described, followed by a discussion of the damage measures relating to simple (linear) and more complex (non-linear) structural responses. The second section reviews the measures of damage phenomena which govern structural degradation and/or collapse, including experimental results and analytical models. The relationship between earthquake characteristics and type and level of damage on the seismic response of structures is examined, and data from different well-known destructive earthquakes are given.

150 citations

Journal ArticleDOI
TL;DR: In this article, the authors reviewed the developments in the methodologies used to create reduced scale models as a design tool, including those based in the use of: dimensional analysis, differential equations and energetic methods.

133 citations