Numerical investigation on the repeated low-velocity impact behavior of composite laminates

Zhou, Junjie; Wen, P.H.; Wang, Shengnan

doi:10.1016/j.compositesb.2020.107771

Cited by 82 publications

(30 citation statements)

References 55 publications

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“…It can be seen that the two results are in good agreement. Compared to the experimental results, the peak force of the simulation results is 6–10% lower and the impact response time is slightly longer, but this phenomenon can be reasonably explained [10,13]. Furthermore, as can be seen from the comparison of deformation contours of the structures depicted in Figure 5, the FE model is able to reflect the failure modes including debonding, buckling and core compression that occur in the experiments.…”

Section: Numerical Simulationmentioning

confidence: 80%

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Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Pan

Chen

Liu

et al. 2022

Jnl of Sandwich Structures & Materials

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Composite corrugated sandwich structures have a wide range of applications in aerospace field, and the loss of structural load carrying capacity due to low-velocity impact damage has become one of the main threats in practical applications. In this study, the impact resistance of corrugated sandwich panels prepared from thermoplastic composites (TPC) under low-velocity impact loading was investigated. Through a series of drop-weight experiments and finite element simulations, the impact response process and damage morphology of the thermoplastic composite sandwich panels were obtained, and the effects of different impact energy and different core arrangements on the energy absorption performance of the structure were explored. Finally, a parametric analysis of the perpendicularly-arranged double-layered corrugated sandwich panel was carried out. The results show that thermoplastic composite sandwich panels exhibit an overall collapse response rather than localised damage, and the structure maintains good integrity and stability. The perpendicularly-arranged sandwich panels rely on the orthogonal configuration characteristics to provide optimum impact load carrying capacity, their impact resistance can be further improved by increasing the thickness of top face-sheet and reducing the thickness of the middle face-sheet at the same time. This provides a basis for promoting the application of TPC in engineering and the design of sandwich structures.

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Section: Numerical Simulationmentioning

confidence: 80%

“…To date, a substantial number of works on exploring the impact resistance of metallic and fibre-reinforced thermosetting composite structures have been reported [13][14]. Gibson et al [15] conducted low-velocity impact experiments on glass fiber/epoxy resin composite honeycomb sandwich panels at high impact energy.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Pan

Chen

Liu

et al. 2022

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

show abstract

“…In the literature, some studies examine the effect of repeated impacts on the mechanical strength of composite materials. Zhou et al [ 32 ] numerically investigated the repeated impact response on carbon/epoxy composite plates in their study. As a result of the study, they observed that the maximum displacement amount of the material increased, and the energy absorption capacity decreased with the increase in the number of impacts applied on the composite plates.…”

Section: Introductionmentioning

confidence: 99%

Nonpenetrating repeated impact effect to the damage behavior of prestressed glass/epoxy composite pipes

2022

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Glass-reinforced plastic (GRP) composite pipes, the use of which has been increasing rapidly in many areas in recent years, may be exposed to the impact of different objects during assembly, operation, repair, and maintenance. Since composite materials are sensitive to impacts, it is vital to examine damage to the material. In this study, the repeated impact response of GRP composite pipes under internal hydrostatic pressure was investigated. In order to simulate different operating conditions on the GRP samples, a prestress was created by applying 4, 16, and 32 bar internal hydrostatic pressure. Then, the prestressed pipes were subjected to low velocity repeated impact tests. As a result of repeated impact tests at low velocity, changes in maximum displacement amount, maximum contact force, energy absorption capacity, and impact velocity were evaluated depending on the number of impacts applied to the samples. The changes in the strength of the samples subjected to repeated impact tests at different internal pressure levels were determined by the hoop tensile tests performed according to the ASTM D2290 standard. As a result of the hoop tensile tests, the variation of the material's tangential tensile strength and damage behavior according to impacts' number and the prestress were investigated.

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“…In our previous work, 35 some preliminary qualitative conclusions of repeated impact on the cross-ply composite laminates were obtained through numerical simulation, whereas the more comprehensive quantitative analysis is still needed through experimental methods. The aim of this study is to investigate the influence of multiple low energy impact on the response of thin cross-ply CFRP laminates.…”

Section: Introductionmentioning

confidence: 99%

Changes in dynamic mechanical behavior of carbon fiber reinforced polymer laminates under multiple low energy impacts

Zhou

Wang

2022

Journal of Composite Materials

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Composite laminates used in aircraft structures are easily subjected to multiple impacts during their service period. The detailed analysis of impact responses could reflect the stiffness of composite structure. Nevertheless, the impact response of laminates with a large width-thickness ratio is quite different from that of ordinary laminates. The deflection could reach several times the thickness during the impact. The present paper performed an experimental study using drop weight equipment to investigate the changes in dynamic mechanical behavior of carbon fiber reinforced polymer(CFRP) laminates during multiple low energy impacts. Three kinds of impact energy levels of 5, 10 and 15J were applied for the single impact event. The specimens impacted at 5 and 10J were then subjected to subsequent impacts in order to explore the differences between single and multiple strikes with the same total impact energy. The global mechanical responses during each impact procedure were recorded and analyzed by the changes of impact force, contact time, peak energy moment, energy absorption and displacement after every single impact. Although the first strike had introduced damages into the plates, the peak force and maximum displacement increased unexpectedly rather than decreased during the second strike. Meanwhile, the damage was evaluated using ultrasonic C-scan and visual inspection. The results indicated that the multiple impacts did not produce as much damage as the first strike. Short matrix cracks were observed at the edge of the dent except for the single impact with 5J energy.

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Numerical investigation on the repeated low-velocity impact behavior of composite laminates

Cited by 82 publications

References 55 publications

Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Experimental and numerical study on the low-velocity impact response of thermoplastic composite corrugated sandwich panels

Nonpenetrating repeated impact effect to the damage behavior of prestressed glass/epoxy composite pipes

Changes in dynamic mechanical behavior of carbon fiber reinforced polymer laminates under multiple low energy impacts

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