Stress-strain behavior of segmented polyurethaneureas under pure shear deformation

✍ Scribed by Toshikazu Takigawa; Satoshi Yamasaki; Kenji Urayama; Masaoki Takahashi; Toshiro Masuda

• Publisher: Springer-Verlag
• Year: 1996
• Tongue: English
• Weight: 667 KB
• Volume: 35
• Category: Article
• ISSN: 0035-4511
• DOI: 10.1007/bf00366915

✦ Synopsis

Elastic properties of segmented polyurethaneureas (SPUs) under pure shear deformation were investigated. Data were analyzed by using strain energy density function (W). The values of the derivatives of W with respect to the invariants of the strain tensor (Ii; i = 1, 2, 3) at zero strain limit were also estimated theoretically and were compared with those estimated by experiment. The limiting value of the derivative with respect to 11 (0 W/OI I) was shown theoretically to be 5 G/8, while the derivatives with respect to/2 and/3 (0 W/OI2 and 0 W/OI3) were respectively -G/8 and -3G/8. The theoretical prediction could explain the asymptotic behavior of the derivatives of SPUs as well as isoprene rubber (IR) reported by Kawabata et al. at small I~ limit.