PEMODELAN TIME-DEPENDENT BEHAVIOR MATERIAL DENGAN MENGGUNAKAN ELEMEN SPRING DAN DASHPOT

Abstract

Abstract To model behavior of material, there are two basic models of the material element i.e.: spring and dashpot. In many cases, time-dependent behavior of a material can not enough be used just one or two basic model of the material element. To model time-dependent behavior of a material, combination of many basic material elements should be used. The most important of long term behaviors of concrete material is creep behavior. Many equation of creep prediction of the concrete materials have been proposed to many design specification and rule design, i.e.: American Concrete Institute (ACI), CEB/FIP 78 and 90, Bażant-Panula, Sakata, etc. This paper will be considering and demonstrating how to model creep compliance based on creep coefficient as used by ACI-209 by using assembly of those basic material element. Keywords: time-dependent behavior, creep compliance, material model.