کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
778770 | 1464146 | 2008 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Characterization and constitutive modeling of aramid fibers at high strain rates Characterization and constitutive modeling of aramid fibers at high strain rates](/preview/png/778770.png)
The quasi-static and rate-dependent mechanical properties of aramid yarns are presented together with a study on different methods of securing yarn specimens in tensile tests. While capstans were found to be suitable for quasi-static tests, they either were not strong enough or had too high inertia for dynamic tests in a Split Hopkinson Pressure Bar setup. Instead, specially designed clamps were used. A viscoelastic material model to describe the mechanical behavior of the yarns, including failure, is also presented. The material model was employed in the computational simulation of ballistic penetration of woven aramid fabrics. Comparison of the simulations and actual ballistic tests showed that predictions of the energy absorbed by the fabric were in good agreement with the experiments.
Journal: International Journal of Impact Engineering - Volume 35, Issue 11, November 2008, Pages 1303–1313