5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


ANALYSIS OF RUBBER BEARING BEHAVIOR WITH MATERIAL DETERIORATION

 

Makoto Obata 1* and Yoshiaki Goto 2

1 Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Nagoya, Japan

E-mails: This email address is being protected from spambots. You need JavaScript enabled to view it.

2 Next Generation Seismic Engineering Laboratory, Nagoya Institute of Technology, Gokiso-cho, Nagoya, Japan

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

DOI:10.18057/ICASS2018.P.121

ABSTRACT:

As rubber bearings play an important role in seismic design of bridges, it is of great necessity to accurately evaluate their deformation characteristics and fracture properties.  Since ordinary rubber in rubber bearings is expected to undergo huge shear deformation as large as several hundred percent until failure and because they have material properties unique to rubber-like materials such as hyper elasticity, plasticity and viscosity, inevitably, large deformation problems and complicated stress-strain relationships must be considered for numerical analyses.  Therefore, many researches have been aiming for accurate numerical simulation of the behavior of rubber bearings.  In this work, the Mullins effect are focused among them. As for the Mullins effect, the formulation introduced so far, such as the one by Ogden-Roxburgh, does not necessarily reproduce the actual behavior very well under cyclic loading.  This research attempts a deformation-based approach.  Numerical simulation shows that a newly introduced damage surface can remedy the shortcomings the simple Mullins model.

Keywords:

Rubber bearings; Constitutive model; Numerical simulation

Download PDF:

IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM