Effect of specimen size on energy dissipation characteristics of red sandstone under high strain rate

2014 ◽  
Vol 24 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Ming Li ◽  
Xianbiao Mao ◽  
Aihong Lu ◽  
Jing Tao ◽  
Guanghui Zhang ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Specimen Size ◽  
Red Sandstone

High strain-rate behavior of natural fiber-reinforced polymer composites

2011 ◽  
Vol 46 (9) ◽  
pp. 1051-1065 ◽  
Author(s):  
Wonsuk Kim ◽  
Alan Argento ◽  
Ellen Lee ◽  
Cynthia Flanigan ◽  
Daniel Houston ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
High Strain Rate ◽  
Strain Rate ◽  
Polymer Composites ◽  
Natural Fiber ◽  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Natural Fibers ◽  
Hopkinson Pressure Bar ◽  
Stress Strain

The high strain-rate constitutive behavior of polymer composites with various natural fibers is studied. Hemp, hemp/glass hybrid, cellulose, and wheat straw-reinforced polymeric composites have been manufactured, and a split-Hopkinson pressure bar apparatus has been designed to measure the dynamic stress–strain response of the materials. Using the apparatus, compressive stress–strain curves have been obtained that reveal the materials’ constitutive characteristics at strain rates between 600 and 2400 strain/s. Primary findings indicate that natural fibers in thermoset composites dissipate energy at lower levels of stress and higher strain than glass-reinforced composites. In the case of thermoplastic matrices, the effect on energy dissipation of natural fibers vs. conventional talc reinforcements is highly dependent on resin properties. Natural fibers in polypropylene homopolymer show improved reinforcement but have degraded energy dissipation compared to talc. Whereas in polypropylene copolymer, natural fibers result in improved energy dissipation compared to talc. These data are useful for proper design, analysis, and simulation of lightweight biocomposites.

scholarly journals Energy dissipation and high-strain rate dynamic response of E-glass fiber composites with anchored carbon nanotubes

2016 ◽  
Vol 88 ◽  
pp. 44-54 ◽  
Author(s):  
Veera M. Boddu ◽  
Matthew W. Brenner ◽  
Jignesh S. Patel ◽  
Ashok Kumar ◽  
P. Raju Mantena ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Energy Dissipation ◽  
Dynamic Response ◽  
High Strain Rate ◽  
Strain Rate ◽  
Glass Fiber ◽  
High Strain ◽  
Fiber Composites ◽  
Glass Fiber Composites ◽  
Rate Dynamic

scholarly journals A Fracture Criterion for Snow

1977 ◽  
Vol 19 (81) ◽  
pp. 111-121 ◽  
Author(s):  
R. L. Brown
Keyword(s):  
Free Energy ◽  
Energy Dissipation ◽  
High Strain Rate ◽  
Strain Rate ◽  
Internal Energy ◽  
Fracture Criterion ◽  
High Strain ◽  
Critical Value ◽  
Deformation Path ◽  
Fine Grained

AbstractA fracture criterion is developed for fine-grained granular snow and is shown to predict accurately the conditions required for fracture under multiaxial states of stress. The criterion is applied to two specific types of deformation histories. The first deformation path involves an initial high strain-rate to produce fracture from an unstressed rest configuration, and the second path involves multiple strain-rate paths. The criterion expresses the critical value of deviatoric free energy in terms of the volumetric free energy and internal energy dissipation, and it was found to predict fracture accurately for tension, compression, and shear.

HIGH STRAIN RATE LOADING OF ZIRCALOY

1985 ◽  
Vol 46 (C5) ◽  
pp. C5-511-C5-516
Author(s):  
A. Kobayashi ◽  
S. Hashimoto ◽  
Li-lih Wang ◽  
M. Toba
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Strain Rate Loading
Sign in / Sign up

Export Citation Format

Share Document