Elastic behaviour characterisation of vulcanised rubber for finite element
analysis
สมบัติยืดหยุ่นเฉพาะของยางวัลคาไนซ์เพื่อใช้ในวิธีไฟไนท์เอเลเมนต์
Vilaiporn Luksameevanish, D. of Sci., F. of Sci. and Tech., PSU.
E-mail : vnoparat@bunga.pn.psu.ac.th
Grant : The National Metal and Material Technology Center (MTEC)
Published : Songklanakarin J Sci Technol 2000, 22(3) : 367-378
Key words : rubber, elastic properties, finite element analysis
Characterisation of vulcanised rubber elastic behaviour, using a strain energy function proposed by Rivlin is employed here. The relation of the reduced true stress as a cubic function of (I1-3) is simplified to describe three simple deformation modes of rubber, following the study of Yeoh. Three simple experiments of uniaxial tension, uniaxial compression and simple shear were then performed in order to determine the strain energy constants- the characteristics of the compound for use in the Finite Element Analysis software. Agreement of experimental and FEA was found in the case of filled NR compounds, having carbon black filler up to 70 phr. Disagreement of the comparison was clearly seen in the high filled SBR compounds.
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