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Determination of Material Damping Based on Dissi-pated Energy in Concrete Dams by Finite Element Method

Credit to Download: 1 | Page Numbers 8 | Abstract Views: 82
Year: 2019
COI code: ISAV09_013
Paper Language: English

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Authors Determination of Material Damping Based on Dissi-pated Energy in Concrete Dams by Finite Element Method

Amir Souri - Ph.D. Student
  Hassan Mirzabozorg - Associate Professor, Faculty of Civil Engineering, K. N. Toosi University of Technology, No. 1346, Valiasr Street, Mirdamad Intersection, 19967-15433, Tehran, Iran.
  Morteza Javadi - Assistant Professor, Faculty of Mining, Geophysics, and Petroleum Engineering, Shahrood University of Technology, Shahrood, Iran,

Abstract:

In the present paper, a new numerical approach here named as Developed Energy Dissipation Algorithm (DEDA), which is based upon finite element analysis is utilized for evaluating the material damping ratio in the dynamic time history analysis of concrete gravity dams. In this approach, damping ratio takes a function of unit dissipation energy, which is also a function of stress amplitude. An iterative process is used to update the damping ratio in every time step of analysis. For the numerical example, the Pine Flat concrete gravity dam under Taft ground motion is selected. The dam crest displacement of the DEDA approach is compared with the so-called computer program EAGD-84 and the results show good agreements. Com-paring the results of the DEDA approach with the Traditional Rayleigh Damping Method (TRDM) gives the reasonable value, which agrees with the field tests.

Keywords:

Concrete gravity dams; Material damping; Finite element method; Seismic anal-ysis; Energy dissipation per unit volume.

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COI code: ISAV09_013

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Souri, Amir; Hassan Mirzabozorg & Morteza Javadi, 2019, Determination of Material Damping Based on Dissi-pated Energy in Concrete Dams by Finite Element Method, 9th International Conference on Acoustic and Vibration, تهران- دانشگاه علم و صنعت ايران, انجمن آكوستيك و ارتعاشات ايران, https://www.civilica.com/Paper-ISAV09-ISAV09_013.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Souri, Amir; Hassan Mirzabozorg & Morteza Javadi, 2019)
Second and more: (Souri; Mirzabozorg & Javadi, 2019)
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