Title of article :
Determination of critical material parameters
for numerical simulation of acrylic sheet forming
Author/Authors :
Y. DONG، نويسنده , , R. J. T. LIN، نويسنده , , D. BHATTACHARYYA، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2005
Abstract :
In order to accurately demonstrate the material behavior during numerical simulation of
thermoforming, the critical material parameters of any specific polymeric material need to
be determined properly. In this study, acrylic sheets (Poly(methyl methacrylate), PMMA) of
both opaque and transparent nature were chosen as the sample materials due to their
widespread usage for the manufacturing of bathwares and kitchen appliances. Hyperelastic
theory (e.g., Mooney-Rivlin and Ogden models) was employed with experimental
verification to obtain the critical material parameters of PMMA. By conducting uniaxial
tensile tests at elevated temperatures between 150 and 190◦C and utilising the least square
method (LSM), the major material parametric functions were derived in terms of forming
temperature. Preliminary application on simulation of free inflation of a bubble profile
resulted in promising agreement with the experimental data validating the developed
parameters. C 2005 Springer Science + Business Media, Inc
Journal title :
Journal of Materials Science
Journal title :
Journal of Materials Science