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Refined plasticity model for concrete stress-strain relationship part II: inclusion of size effect

By Bambang Piscesa, Mario M Attard and Ali Khajeh Samani

Abstract

This article will discuss about the implementation of size effect into the proposed plasticity model by adjusting the plastic potential function or flow rule. A new parameter (αP0) that control the plastic dilation rate after the peak is proposed. In addition a method to include the initial plastic compacting during the plastic flow is also proposed and discussed in detail. The size effect is implemented by means of calibration the softening function in both axial direction and lateral direction with specific aspect ratio of height by width is equal to 2. Some comparison of the proposed plasticity model including the proposed plastic potential function with experimental results of several researcher is compared and discussed in detail

Topics: plasticity model, concrete stress-strain, triaxial-compression, plastic potential, size effect, flow rule, Construction Engineering and Management, Environmental Engineering, Structural Engineering
Publisher: ePublications@SCU
Year: 2014
OAI identifier: oai:epubs.scu.edu.au:acmsm23-1025
Provided by: ePublications@SCU
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