Scaling of low-velocity impact response in composite structures

2009 ◽  
Vol 91 (3) ◽  
pp. 358-365 ◽  
Author(s):  
Andreas P. Christoforou ◽  
Ahmet S. Yigit
Keyword(s):  
Composite Structures ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

scholarly journals An Investigation on Low Velocity Impact Response of Multilayer Sandwich Composite Structures

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
S. Jedari Salami ◽  
M. Sadighi ◽  
M. Shakeri ◽  
M. Moeinfar
Keyword(s):  
Composite Structures ◽  
Sandwich Panel ◽  
Testing Machine ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Core Material ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
The Core

The effects of adding an extra layer within a sandwich panel and two different core types in top and bottom cores on low velocity impact loadings are studied experimentally in this paper. The panel includes polymer composite laminated sheets for faces and the internal laminated sheet called extra layer sheet, and two types of crushable foams are selected as the core material. Low velocity impact tests were carried out by drop hammer testing machine to the clamped multilayer sandwich panels with expanded polypropylene (EPP) and polyurethane rigid (PUR) in the top and bottom cores. Local displacement of the top core, contact force and deflection of the sandwich panel were obtained for different locations of the internal sheet; meanwhile the EPP and PUR were used in the top and bottom cores alternatively. It was found that the core material type has made significant role in improving the sandwich panel’s behavior compared with the effect of extra layer location.

Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires

2007 ◽  
Vol 45 (9) ◽  
pp. 799-808 ◽  
Author(s):  
S.M.R. Khalili ◽  
A. Shokuhfar ◽  
K. Malekzadeh ◽  
F. Ashenai Ghasemi
Keyword(s):  
Hybrid Composite ◽  
Composite Structures ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Thin Walled

Accuracy and Computational Efficiency of Finite Element Models for Low Velocity Impact on Composite Structures Subject to Progressive Damage and Delamination1

2015 ◽  
Vol 10 (6) ◽  
Author(s):  
Ahmed H. A. Ibrahim ◽  
Ahmet S. Yigit
Keyword(s):  
Finite Element ◽  
Computational Efficiency ◽  
Composite Structures ◽  
Material Behavior ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Contact Modeling ◽  
Velocity Impact ◽  
Composite Damage

There has been growing interest to use composites in load carrying structures where high strength and light weight are of major concern, e.g., oil industry (offshore structures and platforms, pipe systems, and tubings), sports equipment, automobiles, and aircraft industries. Despite extensive research in the last two decades, mechanical behavior of composite structures subject to contact and impact loading is still not well understood. It is well known that composites are highly vulnerable to various modes of failure and damage due to impact by foreign objects. Such impact events are not only dependent on the material behavior but also on the dynamics of the structure. Finite element (FE) packages are capable of simulating impact response of composite structures subject to impact. It requires extensive training and in-depth knowledge to obtain an adequate FE model with proper impact response prediction and acceptable computational efficiency. Limited FE models have the ability to capture composite damage due to impact when internal delamination or fiber/matrix failures are present. Severe nonlinearities are encountered during FE analysis to capture composite damage progression or material degradation. This work investigates different FE modeling approaches by analyzing their prediction of force–time history and force–indentation curve occurring in composite plates as a result of low velocity impact. The objective is to provide guidelines on selecting the most appropriate approach for a given impact situation. Moreover, a computationally efficient approach in contact modeling is presented. The proposed approach yields better computation efficiency for contact modeling on both isotropic and composite materials.

Low-velocity impact studies on GFRP and hybrid composite structures

2020 ◽  
Vol 12 (3-4) ◽  
pp. 125-141
Author(s):  
Harshavardhan Shetty ◽  
D. Sethuram ◽  
B. Rammohan ◽  
P. R. Budarapu
Keyword(s):  
Hybrid Composite ◽  
Composite Structures ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Studies

Response and failure modes of biaxial warp-knitted flexible composite subject to low-velocity impact

2021 ◽  
pp. 152808372110154
Author(s):  
Ziyu Zhao ◽  
Tianming Liu ◽  
Pibo Ma
Keyword(s):  
Impact Energy ◽  
Linear Density ◽  
Failure Modes ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Minor Effect ◽  
Low Velocity ◽  
Velocity Impact ◽  
Flexible Composites ◽  
The Impact

In this paper, biaxial warp-knitted fabrics were produced with different high tenacity polyester linear density and inserted yarns density. The low-velocity impact property of flexible composites made of polyurethane as matrix and biaxial warp-knitted fabric as reinforcement has been investigated. The effect of impactor shape and initial impact energy on the impact response of flexible composite is tested. The results show that the initial impact energy have minor effect on the impact response of the biaxial warp-knitted flexible composites. The impact resistance of flexible composite specimen increases with the increase of high tenacity polyester linear density and inserted yarns density. The damage morphology of flexible composite materials is completely different under different impactor shapes. The findings have theoretical and practical significance for the applications of biaxial warp-knitted flexible composite.

Low-velocity impact response and breakage characteristics of hollow brittle particles

2021 ◽  
Vol 150 ◽  
pp. 103813
Author(s):  
Zhiqiang Fan ◽  
Tao Suo ◽  
Taoyi Nie ◽  
Peng Xu ◽  
Yingbin Liu ◽  
...  
Keyword(s):  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

scholarly journals Analysis Of Low-Velocity Impact Response In Aa5083 Plate

2021 ◽  
Vol 1123 (1) ◽  
pp. 012040
Author(s):  
V. Sairam ◽  
S.Kishor Kanna ◽  
P.S.Samuel Ratna Kumar
Keyword(s):  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact
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