A dynamic test methodology for analyzing the strain-rate effect on the longitudinal compressive behavior of fiber-reinforced composites

2017 ◽  
Vol 180 ◽  
pp. 429-438 ◽  
Author(s):  
Marina Ploeckl ◽  
Peter Kuhn ◽  
Jürgen Grosser ◽  
Markus Wolfahrt ◽  
Hannes Koerber
Keyword(s):  
Strain Rate ◽  
Dynamic Test ◽  
Strain Rate Effect ◽  
Rate Effect ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Compressive Behavior ◽  
Test Methodology

scholarly journals Numerical Simulation Study on Strain Rate Effect of Fiber Reinforced Composites

2020 ◽  
Author(s):  
Hui Ye ◽  
Chang Liu ◽  
Yanrong Zhu
Keyword(s):  
Constitutive Model ◽  
Strain Rate ◽  
Composite Laminates ◽  
Model Simulation ◽  
Strain Rate Effect ◽  
Rate Effect ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Simulation Results

Abstract In order to study the effect of strain rate effect on the simulation precision of fiber reinforced composites, the dynamic enhancement factor (DIF) was introduced to modify the modulus and strength of the composite, and the modified Hashin failure criterion was used to establish a three-dimensional progressive damage constitutive model of composite materials which could consider the strain rate effect. The model is embedded into the Abaqus software by VUMAT subroutine, and the simulation of the projectile penetrating the fiberglass reinforced composite laminates is carried out. The simulation results are compared with the experimental results and the constitutive model simulation results without considering the strain rate effect. The results show that the constitutive model with strain rate established in this paper can accurately simulate the process of projectile penetrating the laminates. Compared with the simulation results without strain rate, the accuracy is increased in the model with strain rate, respectively by 14.1% at the penetration speed of 1.8 m/s and by 22.7% at 3 m/s. The errors, between the simulation results of without strain rate and that of the experiments, are increased with the increase of penetration speed, and increase from 28.7% of 1.8 m/s to 36.9% of 3 m/s. The simulation error of constitutive model with strain rate is relatively stable.

Multilevel Analysis of Strain Rate Effect on Visco-Damage Evolution in Short Random Fiber Reinforced Polymer Composites

2021 ◽  
Vol 36 (2) ◽  
pp. 213-218
Author(s):  
M. D. D. Boudiaf ◽  
L. Hemmouche ◽  
M. A. Louar ◽  
A. May ◽  
N. Mesrati
Keyword(s):  
Strain Rate ◽  
Damage Evolution ◽  
Glass Fibers ◽  
Rate Sensitivity ◽  
Polymeric Composite ◽  
Tensile Tests ◽  
Strain Rate Effect ◽  
Rate Effect ◽  
Fiber Reinforced ◽  
Stress Levels

Abstract In this study, the strain rate sensitivity of a discontinuous short fiber reinforced composite and the strain rate effect on the damage evolution are investigated. The studied material is a polymeric composite with a polyamide 6.6 matrix reinforced with oriented randomly short glass fibers at a 50% weigh ratio (PA6.6GF50). Tensile tests at low and high strain rate are conducted. In addition, interrupted tensile tests are carried out to quantify the damage at specific stress levels and strain rates. To perform the interrupted tensile tests, an intermediate fixture is realized via double notched mechanical fuses with different widths designed to break at suitable stress levels. The damage is estimated by the fraction of debonded fibers and matrix fractures. Based on the experimental observations, it is concluded that the ultimate stress and strain, and the damage threshold are mainly governed by the strain rate. Furthermore, it is established that the considered composite has a non-linear dynamic behavior with a viscous damage nature.

Fracture toughness in random-chopped fiber-reinforced composites and their strain rate dependence

2006 ◽  
Vol 100 (1) ◽  
pp. 695-701 ◽  
Author(s):  
George C. Jacob ◽  
James Michael Starbuck ◽  
John F. Fellers ◽  
Srdan Simunovic ◽  
Raymond G. Boeman
Keyword(s):  
Fracture Toughness ◽  
Strain Rate ◽  
Rate Dependence ◽  
Fiber Reinforced Composites ◽  
Strain Rate Dependence ◽  
Reinforced Composites ◽  
Fiber Reinforced
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