Fiber reinforced polymer-confined concrete under high strain rate compression: Behavior and a unified dynamic strength model

2020 ◽  
Vol 260 ◽  
pp. 120460
Author(s):  
Yong-Chang Guo ◽  
Shu-Hua Xiao ◽  
Jun-Jie Zeng ◽  
Yu Zheng ◽  
Xiang Li ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Dynamic Strength ◽  
Fiber Reinforced Polymer ◽  
Confined Concrete ◽  
Strength Model ◽  
Compression Behavior ◽  
Reinforced Polymer ◽  
Strain Rate Compression

High Strain Rate Compression Behavior and Constitutive Relation of As-Extruded Mg-Gd-Y Magnesium Alloy

2011 ◽  
Vol 686 ◽  
pp. 162-167 ◽  
Author(s):  
Zheng Liu ◽  
Ping Li Mao ◽  
Chang Yi Wang
Keyword(s):  
Magnesium Alloy ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Strain Rates ◽  
High Strain Rates ◽  
Stress Strain ◽  
Compression Behavior ◽  
Calculated Stress ◽  
Strain Rate Compression

The high strain rate compression behavior of extruded Mg-Gd-Y magnesium alloy was tested by split Hopkinson pressure bar (SHPB) under the strain rates of 465s-1，2140s-1and 3767s-1. As comparison the quasi-static compression behavior was tested in the meanwhile. The results show that the quasi-static yield stress is equivalent to that of high strain rates, but the flow stress at high strain rates are higher than that of quasi-static stain rate at the same strain. When the strain rate is increase from quasi-static to high strain rates the deformation stresses increase obviously but within the present testing high strain rates, increasing the strain rate the stress has a slight increasing, indicating that at high strain rate the stress of Mg-Gd-Y magnesium alloy is not sensitive to the strain rate. The constitutive equation between deformation stress, strain and strain rate was build based on the tested compression stress strain curves. The calculated stress strain data were compared with tested stress strain curves. The results demonstrate that when the strain rates are 0.001s-1，465s-1，2140s-1respectively the calculated and experimental data are fit very well. The calculated stress is higher than that of tested stress if the strain rate is increase to 3767s-1and the strain is more than 0.15. The discrepancy was explained through the physical soundness of Johnson-Cook model.

Frequency Characterizations of Epoxy/CNTs Composites under Compression at Different Strain Rates

2016 ◽  
Vol 25 (3) ◽  
pp. 096369351602500
Author(s):  
Pibo Ma ◽  
Yuping Chang ◽  
Gaoming Jiang
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Amplitude Spectrum ◽  
Epoxy Composites ◽  
Strain Rates ◽  
Frequency Range ◽  
Compression Behavior ◽  
Specific Frequency ◽  
Strain Rate Compression

This paper reports the compression behavior of epoxy composites with various carbon nanotubes (CNTs) contents, under quasi-static and high strain rate compression. The compression behaviours of epoxy composites with various CNTs contents under quasi-static and high strain rate compression were compared and analyzed in the frequency domain using the fast Fourier transform (FFT) method. The results show that the compression behavior, amplitude spectrum and phase spectrum of the epoxy/CNTs composite are strain rate sensitive. The epoxy/CNTs composites can absorb higher energy in a specific frequency range.

scholarly journals Fracture behavior of twin induced ultra-fine grained ZK61 magnesium alloy under high strain rate compression

2019 ◽  
Vol 8 (4) ◽  
pp. 3475-3486 ◽  
Author(s):  
Abdul Malik ◽  
Wang Yangwei ◽  
Cheng Huanwu ◽  
Muhammad Abubaker Khan ◽  
Faisal Nazeer ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
High Strain Rate ◽  
Strain Rate ◽  
Fracture Behavior ◽  
High Strain ◽  
Fine Grained ◽  
Strain Rate Compression

High strain rate compression testing of K-49/3501-6 Kevlar/epoxy composites

1997 ◽  
Author(s):  
Eric Preissner ◽  
Eyassu Woldesenbet ◽  
Jack Vinson ◽  
Eric Preissner ◽  
Eyassu Woldesenbet ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Compression Testing ◽  
Epoxy Composites ◽  
Strain Rate Compression
Sign in / Sign up

Export Citation Format

Share Document