Designing foam filled sandwich panels for blast mitigation using a hybrid evolutionary optimization algorithm

Karen, İdris; Yazıcı, Murat; Shukla, Arun

doi:10.1016/j.compstruct.2016.07.081

Cited by 38 publications

(14 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang et al [30] studied the static and dynamic crushing of sandwich panels consisting of carbonfibre-reinforced polymer (CFRP) skins filled with very different materials (EPP, aluminium honeycomb, rubber foam balls and hollow plastic spheres) to investigate the relative performance of the filler material. Aluminium [31]- [33] and steel [34] sheets have been used as skins in combination with various foams. These studies showed that the properties of the core material obviously is significant, but also proved that the performance can be optimized with a proper choice of material.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static behaviour of crash components with steel skins and polymer foam cores

Reyes

2018

Materials Today Communications

View full text Add to dashboard Cite

Different types of crash components are extensively used by the automotive industry to absorb energy during car accidents. Such components typically consist of sandwich structures with thin metal or composite plates as skins and a cellular foam as core to dissipate the energy. In this study, the quasi-static behaviour of two types of polymeric foams with different densities, namely extruded polystyrene (XPS) and expanded polypropylene (EPP), utilized as core material in a crash component, has been investigated. First, an extensive material test program involving compression tests on cubic specimens loaded in different material directions was carried out to reveal the mechanical properties of the foams. Second, quasi-static impact tests were conducted on various target configurations consisting of 0.8 mm thick skins of Docol 600DL steel and the various foam materials as core. In these tests, the applied force and the displacement of the striker were registered by the test machine, while digital cameras and 3D-DIC were used to measure the back-plate out-of-plane displacement of the various components.It seems clear from the presented results that if low weight combined with maximum energy absorption are the primary interests, an XPS foam as core seems to be beneficial, while if force reduction and minimum back-plate displacement are most important, an EPP foam as core seems to be a better choice. Thus, the response of the crash component is largely determined by the properties of the core material during quasi-static loading.

show abstract

Section: Introductionmentioning

confidence: 99%

Quasi-static behaviour of crash components with steel skins and polymer foam cores

Reyes

2018

Materials Today Communications

View full text Add to dashboard Cite

show abstract

“…A large amount of study showed that even static, impact, or blast loading conditions, filling with foam inside the core cells improved the mechanical performance of the sandwich structures. [39][40][41][42][43][44][45][46][47][48][49][50] Not only improving strength and rigidity but also the self-healing purpose of the sandwich structure core's cells has filled with the self-healing capsules. 31 In our previous study, we have filled the Al honeycomb cells with macrocapsules carrying epoxy resin and activators as healing agents.…”

Section: Introductionmentioning

confidence: 99%

A sandwich panel that autonomously repairs sudden large holes and defects for tankers and pipelines carrying hazardous matter

Özer

Kuzu

Özada

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

The self-healing of micro and macro cracks is vital for eliminating defects such as damage progression and loss of strength in structures. In this study, a polyurethane (PU) based geometrically self-healing sandwich structure was developed. The geometric healing agent, PU resin and activator, were filled into macrocapsules, and these capsules were filled into the Aluminum (Al) honeycomb cells. Self-healing of structural strength, large holes and cracks in developed sandwich structures were investigated by performing quasi-static compression and impact penetration tests. The sandwich structure with a self-healing capsules-filled core was damaged by subjecting it to quasi-static and penetration impact loads, and the healing agents in the broken capsules were mixed. The damage in the specimen was removed by geometric self-healing. Liquid and air permeability tests were applied to the PU foam used as a healing agent. No liquid permeability was observed in the structure. In addition, significant reductions in air permeability were obtained. Scanning electron microscope images were used to explore the characterization of the PU foam structure cells.

show abstract

“…Fincham and Friswell 38 presented an optimization procedure for aerofoils and obtained optimized thickness distribution for them. Karen et al 39 performed structural optimization methods to obtain best distribution of filled core for sandwich panels. They implemented genetic Algorithm and Hooke-Jeeves Algorithm to improve performance of corrugated sandwich panel under shock loads.…”

Section: Introductionmentioning

confidence: 99%

Bending behavior and geometrical optimization of five-layered corrugated sandwich panels with equal in-plane principal stiffness

Vakilifard

Mazaheri

Shaban

2022

Journal of Composite Materials

View full text Add to dashboard Cite

In this work, bending properties of five-layer sandwich panels with corrugated three-layer core are investigated both numerically and experimentally. Sheet metal forming is employed to construct the corrugated core and three-point bending tests are performed to experimentally evaluate the bending behavior of the panels. Besides, reliable finite element model is developed and validated by the experimental results. The results show that the phase difference of the external core has no considerable effect on the panel behavior. Next, the effect of orientation for the corrugated cores is studied for two 0/90/0 and 90/0/90 layups. The results show that bending rigidity of 90/0/90 is greater than other case due to more bending rigidity of the external cores. To design an optimum sandwich panel, genetic algorithm is utilized by constraining the mass and height of the panel. For optimization purpose, an analytical formulations that is validated by presented experimental and numerical results are used. Based on optimization results, optimized sandwich panel is constructed and exposed to TPB test. Good agreement is observed between all the numerical, analytical and experimental methods. The results indicate that the optimized configuration can achieve notable higher bending resistance in the same weight especially for the 90/0/90 case. Finally, an isotropic multilayered sandwich panel is introduced and optimized to overcome the drastic anisotropic properties of corrugated cores. The optimized isotropic panel have equal bending rigidity in two principal axes of the panel.

show abstract

Designing foam filled sandwich panels for blast mitigation using a hybrid evolutionary optimization algorithm

Cited by 38 publications

References 40 publications

Quasi-static behaviour of crash components with steel skins and polymer foam cores

Quasi-static behaviour of crash components with steel skins and polymer foam cores

A sandwich panel that autonomously repairs sudden large holes and defects for tankers and pipelines carrying hazardous matter

Bending behavior and geometrical optimization of five-layered corrugated sandwich panels with equal in-plane principal stiffness

Contact Info

Product

Resources

About