IIIT Hyderabad Publications |
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CORRELATION OF STRUCTURAL DAMAGE WITH ENERGY DISSIPATIONAuthor: Anuj Agrawal Date: 2020-02-20 Report no: IIIT/TH/2020/14 Advisor:Pradeep Kumar Ramancharla AbstractThe construction of buildings is attained using force based design based on existing code provisions. Force based design has limitations as it only takes into account peak acceleration but not frequency content and duration of ground motion. A more reliable technique under consideration is energy based design which takes into account frequency content as well as duration of ground motion. Therefore it is essential to study the relation between different structure as well as earthquake characteristics with energy. In this study two types of structure, long period and short period, is considered because of the major difference in their response to earthquake. Therefore behavior of long and short time period structures is studied in terms of energy and damage induced when subjected to dynamic earthquake ground motion. Structures were modeled considering single degree of freedom following appropriate assumptions. A tool has been developed to study the behavior for long and short time period structures using MATLAB. Elastoplastic model was assumed for the nonlinear response. Response was calculated by solving dynamic equilibrium equations using Newmark’s step by step integration scheme. The tool developed is capable of performing time history analysis for getting response and this response was used to calculate imparted energy, hysteretic energy etc. over time duration of ground motion. Hysteretic energy is responsible for any damage induced in the structure because it accumulates only when the structure goes into non- linear region Full thesis: pdf Centre for Earthquake Engineering |
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