Can I read Integral-based Constitutive Equation for Rubber at High Strain Rates on EtoBox?

Integral-based Constitutive Equation for Rubber at High Strain Rates by Michelle S. Hoo Fatt; Xin Ouyang is a scholarly article available to read on EtoBox.

What is Integral-based Constitutive Equation for Rubber at High Strain Rates about?

High-speed experiments were conducted to characterize the deformation and failure of Styrene Butadiene Rubber at impact rates. Dynamic tensile stress-strain curves of uniaxial strip specimens and force-extension curves of thin sheets were obtained from a Charpy tensile impact apparatus. Results from the uniaxial tension tests indicated that although the rubber became stiffer with increasing strain rates, the stress-strain curves remained virtually the same above 280 s À1 . Above this critical strain rate, strength, fracture strain and toughness decreased with increasing strain rates. When strain rates were below 180 s À1 , the initial modulus, tensile strength and breaking extension increased as the strain rate increased. Between strain rates of 180 and 280 s À1 , the initial modulus and tensile strength increased with increasing strain rates but the extension at break decreased with increasing strain rates. A hyper-viscoelastic constitutive relation of integral form was used to describe the rate-dependent material behavior of the rubber. Two characteristic relaxation times, 5 ms and 0.25 ms, were needed to fit the proposed constitutive equation to the data. The proposed constituti

Author

Michelle S. Hoo Fatt; Xin Ouyang

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0020-7683)

Published

2007

Language

EN