Experimental study of the out-of-plane dynamic compression of hexagonal honeycombs

Xu, Shanqing; Beynon, John H.; Ruan, Dong; Lu, Guoxing

doi:10.1016/j.compstruct.2012.02.024

Cited by 201 publications

(110 citation statements)

References 23 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…In a parallel study [13], it was experimentally demonstrated that honeycomb specimens with 9×9 cells are sufficient to represent a large block of honeycomb. Therefore, using the same method, honeycomb specimens were carefully cut by sharp, thin knives to contain 9×9 cells for honeycombs In order to study the effect of the entrapped air on the honeycomb properties during dynamic crushing, every specimen was sealed by a layer of GMS Composites EP-280 films, whose properties are listed in Table 2, on each end.…”

Section: Materials and Specimensmentioning

confidence: 99%

“…In a parallel study of the out-of-plane dynamic behaviour of hexagonal honeycombs by Xu et al [13], a strong strength enhancement was observed when the compressive velocity increased from 5×10 -5 to 10 m/s, especially when the deformation occurred in the region close to the densification strain. The present paper will focus on the effect of entrapped air aiming at a better interpretation of the relationship between the entrapped air and the strength enhancement.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Strength enhancement of aluminium honeycombs caused by entrapped air under dynamic out-of-plane compression

Beynon

Ruan

et al. 2012

International Journal of Impact Engineering

View full text Add to dashboard Cite

The out-of-plane crushing behaviour of aluminium hexagonal honeycombs containing different percentages of holes (i.e., the fraction of penetrated cells to the total) was extensively investigated over a wide range of strain rates where each test was conducted at constant compression velocity.Strength enhancement due to the increase of the strain rate and the entrapped air was studied. It is found that the strain hardening of honeycomb structures during the dynamic crush is mostly attributed to the pressure change caused by the entrapped air. The leaking rate,   , was then studied and found to be dependent on the strain and strain rate, and independent of the wall thickness to edge length ratio, t/l. An empirical constitutive relation describing the plastic collapse stress in relation to the t/l ratio, the strain and strain rate is proposed, which agrees well with the experimental results.

show abstract

Section: Materials and Specimensmentioning

confidence: 99%

mentioning

confidence: 99%

Strength enhancement of aluminium honeycombs caused by entrapped air under dynamic out-of-plane compression

Beynon

Ruan

et al. 2012

International Journal of Impact Engineering

View full text Add to dashboard Cite

show abstract

“…Considerable experimental and numerical studies have been conducted to investigate the dynamic behavior of cellular structures Wang et al, 2006;Zhou et al, 2012;Wang et al, 2011;Chen et al, 1999;Tan et al, 2005;Masters and Evans, 2009;Blawi and Abot, 2008;Xu et al, 2012). The deformation, crushing stress and energy absorption as well as the cell geometric topology of the uniform cellular structures have been studied systematically.…”

Section: Introductionmentioning

confidence: 99%

Dynamic crushing of uniform and density graded cellular structures based on the circle arc model

Zhang

Wei

Wang

et al. 2015

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

A new circle-arc model was established to present the cellular structure. Dynamic response of models with density gradients under constant velocities is investigated by employing Ls-dyna 971. Compared with the uniform models, the quasi-static plateau stress of different layers seems a significant parameter correlated with the deformation mode except for inertia effect when the density gradient is introduced. The impact velocity becomes much more vital on the deformation of the unit cell than the density gradient. The stress at both the impact and stationary sides is investigated in details. Furthermore, the stress-strain curve is compared with the modified shock wave theory. The density gradient does have some remarkable influence on the energy absorption capability, and a certain density gradient is not always beneficial to the energy absorption. Irrespective of the impact velocity, there seems always a critical strain where the energy absorbed by all these specimens could approximate to nearly the same value. So the critical strain-velocity curve is plotted and gives the beneficial area for energy absorption pertinent to density gradients and impact velocity.

show abstract

“…For example, the out-of-plane compressive strength of aluminium hexagonal honeycomb is 2 times greater than the in-plane compressive strength [11]. Extensive studies on the out-of-plane compressive behaviour of regular honeycombs have been reported in the literature [12][13][14][15][16]. As reported by Radford et al [12], stainless-steel square honeycombs with relative density 0.1   failed with torsional plastic buckling under quasi-static out-of-plane compression.…”

Section: Introductionmentioning

confidence: 81%

Dynamic compressive response of additively manufactured AlSi10Mg alloy hierarchical honeycomb structures

Zhang

Liu

Ren

et al. 2018

Composite Structures

View full text Add to dashboard Cite

Experimental study of the out-of-plane dynamic compression of hexagonal honeycombs

Cited by 201 publications

References 23 publications

Strength enhancement of aluminium honeycombs caused by entrapped air under dynamic out-of-plane compression

Strength enhancement of aluminium honeycombs caused by entrapped air under dynamic out-of-plane compression

Dynamic crushing of uniform and density graded cellular structures based on the circle arc model

Dynamic compressive response of additively manufactured AlSi10Mg alloy hierarchical honeycomb structures

Contact Info

Product

Resources

About