Estimation of hysteretic energy demand using concepts of modal pushover analysis
Current time: 01-22-2018, 06:47 PM
Users browsing this thread: 1 Guest(s)
Author: TAFATNEB
Last Post: TAFATNEB
Replies 0
Views 1010

Estimation of hysteretic energy demand using concepts of modal pushover analysis
#1
Estimation of hysteretic energy demand using concepts of modal pushover analysis

Author: Tholen Prasanth , Siddhartha Ghosh , d Kevin R. Collins | Size: 235 KB | Format: PDF | Quality: Unspecified | Publisher: EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS Earthquake Engng Struct. Dyn. 2008; 37:975–990 Published online 17 March 2008 in Wiley InterScience (http://www.interscience.wiley.com). DOI: 10.1002/eqe.802 | Year: 2008 | pages: 16


[Image: info.png]

Hysteretic energy dissipation in a structure during an earthquake is the key factor, besides maximum displacement, related to the amount of damage in it. This energy demand can be accurately computed
only through a nonlinear time-history analysis of the structure subjected to a specific earthquake ground acceleration. However, for multi-story structures, which are usually modeled as multi-degree of freedom
(MDOF) systems, this analysis becomes computation intensive and time consuming and is not suitable for adopting in seismic design guidelines. An alternative method of estimating hysteretic energy demand on MDOF systems is presented here. The proposed method uses multiple ‘generalized’ or ‘equivalent’ single
degree of freedom (ESDOF) systems to estimate hysteretic energy demand on an MDOF system within the
context of a ‘modal pushover analysis’. This is a modified version of a previous procedure using a single ESDOF system. Efficiency of the proposed procedure is tested by comparing energy demands based on
this method with results from nonlinear dynamic analyses of MDOF systems, as well as estimates based on the previous method, for several ground motion scenarios. Three steel moment frame structures, of 3-, 9-, and 20-story configurations, are selected for this comparison. Bias statistics that show the effectiveness of the proposed method are presented. In addition to being less demanding on the computation time and
complexity, the proposed method is also suitable for adopting in design guidelines, as it can use response spectra for hysteretic energy demand estimation.

[Image: download.png]
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************



[-] The following 7 users say Thank You to TAFATNEB for this post:
  • vardan, blaze, jcbv, zrilek, malc, PinkPant, civilgen
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
Pushover Analysis of I-5 RAVENNA Bridge TAFATNEB 0 1,110 08-14-2014, 09:26 AM
Last Post: TAFATNEB
Some Remarks on the Seismic Demand Estimation in the Context of Vulnerability Assessm TAFATNEB 0 816 05-10-2014, 11:21 AM
Last Post: TAFATNEB
Modal Pushover Analysis of SAC Buildings TAFATNEB 0 971 04-26-2014, 07:15 PM
Last Post: TAFATNEB
Behavior of high frequency modal responses in non linear seismic  analysis  TAFATNEB 0 933 04-17-2014, 10:57 AM
Last Post: TAFATNEB
3D PUSHOVER ANALYSIS: THE ISSUE OF TORSION TAFATNEB 1 1,183 11-25-2013, 08:13 AM
Last Post: andersen3



Users browsing this thread: 1 Guest(s)