| Home  | About ScienceAsia  | Publication charge  | Advertise with us  | Subscription for printed version  | Contact us  
Editorial Board
Journal Policy
Instructions for Authors
Online submission
Author Login
Reviewer Login
Volume 48 Number 5
Volume 48 Number 4
Volume 48 Number 3
Volume 48 Number 2
Volume 48S Number 1
Volume 48 Number 1
Earlier issues
Volume 34 Number 3 Volume 34 Number 4 Volume 35 Number 1

previous article next article

Research articles

ScienceAsia 34 (2008): 395-399 |doi: 10.2306/scienceasia1513-1874.2008.34.395


Characterization of material constants based on synthetic biaxial data


Roongrote Wangkieta,b, Sedthawatt Sucharitpwatskula, Chakrit Sirisinhab,c, Chudej Deeprasertkulb,c, Pongdhorn Sae-Ouia,b,*

 
ABSTRACT:     When applying finite element analysis (FEA) to the designing of rubber products, the material constants are required as input data. To obtain sufficiently accurate material constants, combined tests and biaxial tests are recommended. However, these tests are time-consuming and sometimes require special equipment. We propose a fast and easy method to characterize the material constants. In this method, only the tensile test is required. The tensile data are used to generate biaxial data based on the constant true Young modulus with varying Poisson’s ratio approach. The synthetic biaxial data are then converted into material constants by multiple regression. Compared with the material constants obtained from conventional method, those obtained from the proposed method give a better prediction of rubber behaviour under tension and simple shear modes. Even though they give a poorer prediction under compression mode, the difference between the FEA and experimental results is relatively low (∼11–12%). Thus, it could be concluded that the material constants obtained from this method could give good prediction of rubber behaviour under various types of deformation.

Download PDF

4 Downloads 1205 Views


erotik shop
a National Metal and Materials Technology Center, 114 Thailand Science Park, Paholyothin Rd, Klong 1, Klong-Luang, Pathumthani 12120, Thailand
b Rubber Research Unit, Faculty of Science, Mahidol University, Salaya Campus, Phutthamonthon 4 Rd, Salaya, Nakornprathom 73170, Thailand
c Department of Chemistry, Faculty of Science, Mahidol University, Salaya Campus, Phutthamonthon 4 Rd, Salaya, Nakornprathom 73170, Thailand

* Corresponding author, E-mail: pongdhor@mtec.or.th

Received 26 Nov 2007, Accepted 21 Jul 2008