A study on different failure criteria to predict damage in glass/polyester composite beams under low velocity impact

2015 ◽  
Vol 18 (5) ◽  
pp. 1291-1303 ◽  
Author(s):  
Manizheh Aghaei ◽  
Mohammad R. Forouzan ◽  
Mehdi Nikforouz ◽  
Elham Shahabi
Keyword(s):  
Failure Criteria ◽  
Composite Beams ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Polyester Composite

Failure Analysis of CCF300/5428 Laminates under Low Velocity Impact Based on Properties of Advanced Composite Material

2013 ◽  
Vol 387 ◽  
pp. 185-188
Author(s):  
Jian Yu Zhang ◽  
Ming Li ◽  
Li Bin Zhao ◽  
Bin Jun Fei
Keyword(s):  
Failure Analysis ◽  
Composite Laminates ◽  
Damage Model ◽  
Failure Criteria ◽  
Low Velocity Impact ◽  
Material System ◽  
Low Velocity ◽  
3D Fem ◽  
Velocity Impact ◽  
The Impact

A progressive damage model (PDM) composed by 3D FEM, Hashin and Ye failure criteria and Changs degradation rules was established to deeply understand the failure of a new material system CCF300/5428 under low velocity impact. User defined subroutines were developed and embedded into the general FEA software package to carry out the failure analysis. Numerical simulations provide more information about the failure of composite laminates under low velocity impact, including initial damage status, damage propagation and final failure status. The history of the impact point displacement and various damage patterns were detailed studied.

Effect of surface geometry on low-velocity impact behavior of laminated aramid-reinforced polyester composite

2016 ◽  
Vol 50 (29) ◽  
pp. 4077-4091 ◽  
Author(s):  
Ali İmran Ayten ◽  
Bülent Ekici ◽  
Arif Nihat Güllüoǧlu
Keyword(s):  
Energy Absorption ◽  
Volume Fraction ◽  
Low Velocity Impact ◽  
Surface Geometry ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Tests ◽  
Polyester Composite ◽  
The Impact ◽  
Effect Of Surface

The aim of this study is to investigate the effect of surface geometry for low-velocity impact applications. To achieve this purpose, aramid fiber-reinforced laminated polyester composite with various geometries such as cylindrical, elliptical, and spherical were prepared, and low-velocity impact properties were investigated numerically and experimentally. All properties such as orientation, fiber volume fraction, matrix material, and average thickness are the same in all samples. Experimental low-velocity impact behaviors of structure were determined by drop weight tester at low velocity 2.012 m/s. Simulations were carried out by LS-Prepost 4.2 and LS-Dyna v971 software. By this way, results of impact tests were verified and modeled with finite element method. Results of the impact tests showed that the elliptical samples have the highest energy absorption capability due to effective stress transfer capacity. According to experimental results, maximum energy absorption rate difference is 17% between elliptical 10 mm and cylindrical 5 mm geometries.

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