Dynamic mechanical behaviors of poplar wood

DOU Jin-long; WANG Xu-guang; LIU Yun-chuan

doi:10.11883/1001-1455(2008)04-0367-05

Volume 28 Issue 4

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(4): 367-371

LI Ru-jiang, LIU Tian-sheng, SHEN Zhao-wu, FAN Zi-jian. On stability of jet produced by shaped charge with porous liner[J]. Explosion And Shock Waves, 2009, 29(2): 217-220. doi: 10.11883/1001-1455(2009)02-0217-04

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DOU Jin-long, WANG Xu-guang, LIU Yun-chuan. Dynamic mechanical behaviors of poplar wood[J]. Explosion And Shock Waves, 2008, 28(4): 367-371. doi: 10.11883/1001-1455(2008)04-0367-05

Citation:

DOU Jin-long, WANG Xu-guang, LIU Yun-chuan. Dynamic mechanical behaviors of poplar wood[J]. Explosion And Shock Waves, 2008, 28(4): 367-371. doi: 10.11883/1001-1455(2008)04-0367-05

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Dynamic mechanical behaviors of poplar wood

doi: 10.11883/1001-1455(2008)04-0367-05

1.
University of Science and Technology Beijing, Beijing 100083, China;
2.
Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China

Publish Date: 2008-07-25

Abstract

Abstract

The dynamic mechanical properties of dry and water-saturated fast-growing poplar wood under dynamic compression was investigated by the split Hopkinson bar techanique and compared with the quasi-static compression experiment. The failure mechanism of the poplar wood discussed at high strain rates. Results show the following characters: (1) the compressive stress-strain curves of poplar wood are similar to those of other cellular solids which are characterized by three distinct region: elastic region, collapse region and densification region; (2) the fibers of the dry poplar samples after shock occur local bucking and collapse, but the fiber bundles of the water-saturated poplar samples detach along the grain direction due to the water in the cellular lumens which is incompressible and can not be extruded at high strain rates. (3) the strain rate effect of the poplar wood is evident.
- solid mechanics,
- mechanical behavior,
- split Hopkinson bars,
- poplar wood,
- strain rate effect

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