Experiments and numerical simulations of low-velocity impact of sandwich composite panels

2015 ◽  
Vol 38 (4) ◽  
pp. 646-656 ◽  
Author(s):  
Taotao Zhang ◽  
Ying Yan ◽  
Jianfeng Li
Keyword(s):  
Numerical Simulations ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Composite Panels ◽  
Low Velocity ◽  
Velocity Impact

Low-velocity impact behaviour of a shear thickening fluid (STF) and STF-filled sandwich composite panels

2018 ◽  
Vol 165 ◽  
pp. 74-83 ◽  
Author(s):  
Kunkun Fu ◽  
Hongjian Wang ◽  
Li Chang ◽  
Matthew Foley ◽  
Klaus Friedrich ◽  
...  
Keyword(s):  
Shear Thickening ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Composite Panels ◽  
Low Velocity ◽  
Shear Thickening Fluid ◽  
Velocity Impact ◽  
Impact Behaviour

Impact Damage Research of Sandwich Composite Laminates

2013 ◽  
Vol 710 ◽  
pp. 136-141
Author(s):  
Li Jun Wei ◽  
Fang Lue Huang ◽  
Hong Peng Li
Keyword(s):  
Compressive Strength ◽  
Composite Laminates ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Compression Process ◽  
Velocity Impact ◽  
Residual Compressive Strength ◽  
Core Materials

Sandwich composite laminates structure is a classic application of composite material on actual aircraft structural. Dealing with low-velocity impact damage and residual compressive strength of sandwich composite laminates, explicit finite element method of ABAQUS/Explicit software was adopted to simulate low-velocity impact and compression process. Impact response and invalidation on compression between sandwich composite laminates with different core materials and regular composite laminates were compared. The simulation results indicated that softer core materials can absorb more impact energy, reduce the structure damage and enhance the residual compressive strength after impact.

Self-Repairing Approaches for Resin Infused Composites Subjected to Low Velocity Impact

1999 ◽  
Author(s):  
Molefi Motuku ◽  
Gregg M. Janowski ◽  
Uday K. Vaidya
Keyword(s):  
Polymer Composites ◽  
Hollow Fibers ◽  
Low Velocity Impact ◽  
Composite Panels ◽  
Low Velocity ◽  
Fiber Failure ◽  
Velocity Impact ◽  
Damaged Zone ◽  
The Matrix ◽  
Copper Tubing

Abstract Low velocity impact response (LVIR) of glass reinforced polymer composites (GRPCs), which have the potential to self repair both micro- and macro-damage, has been investigated. This class of materials falls under the category of passive smart polymer composites. The self-repairing mechanism is achieved through the incorporation of hollow fibers in addition to the normal solid reinforcing fibers. The hollow fibers store the damage-repairing solution or chemicals that are released into the matrix or damaged zone upon fiber failure. Plain-weave S-2 glass fabric reinforcement, DERAKANE vinyl ester 411-C50 and EPON-862 epoxy resin systems were considered for this study. Different tubing materials were investigated for potential use for storing the repairing chemicals instead of the actual hollow repair-fibers and included borosilicate glass micro-capillary pipets, flint glass Pasteur pipets, copper tubing and aluminum tubing. Composite panels were fabricated by using vacuum assisted resin transfer molding (VARTM) process. The present investigation addressed fabrication of self-repairing composite panels, the processing quality, selection of storage material for the repairing solution and, release and transportation of repairing solution.

Experimental and Numerical Investigation of Response of Sandwich Composite Beam Subjected to Low-Velocity Impact

2015 ◽  
Vol 732 ◽  
pp. 239-246 ◽  
Author(s):  
Tomáš Mandys ◽  
Vladislav Laš ◽  
Tomáš Kroupa ◽  
Robert Zemčík
Keyword(s):  
Composite Beam ◽  
Progressive Failure ◽  
Material Model ◽  
Low Velocity Impact ◽  
Elastic Behavior ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
Non Linear ◽  
Force Time

This paper deals with the progressive failure analysis of sandwich composite beam loaded with transversely low-velocity impact. A user defined material model was used for modeling of the non-linear orthotropic elastic behavior of composite skin. The non-linear behavior of foam core was modeled using Low-Density Foam material model. The numerical model was validated using performed experiment and the results in terms of deflection and contact force time dependencies are mutually compared.

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