Behavior of Composite Shells Under Transverse Impact and Quasi-Static Loading

Wardle, Brian L.; Lagacé, Paul A.

doi:10.2514/2.481

Cited by 17 publications

(6 citation statements)

References 14 publications

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“…6 show that as the radius increases, both the critical snapping load and the deflections associated with the instability behavior ( shape curve) decrease. This behavior is noted for all curved shells tested [2,3]. Fig.…”

Section: Resultssupporting

confidence: 52%

“…This is a well-known result for composite plate structures. The effect of varying structural parameters on damage resistance can therefore be evaluated by considering the effect on the resulting maximum contact force; e.g., if increasing the radius increases the maximum contact force, then increasing the radius will generally cause an increase in the damage [3]. Maximum contact force is the key to understanding damage resistance.…”

Section: Resultsmentioning

confidence: 99%

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Impact Response and Damage of Composite Shell with Various Curvatures

Kim

Yang

2004

KEM

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In this study, the impact responses and damage behaviors of CF/Epoxy(Carbon Fiber/Epoxy Resin) composite laminates have been studied considering the effects of various curvature radius. During the impact, the impactor's kinetic energy is consumed by the rebound energy of the impactor, strain energy and damage energy. Most of the kinetic energy is consumed by delamination propagation including crack growth. Therefore the contact force-time and deflection-time histories were measured to determine the specimen response. All specimens were visually evaluated for damage after testing, and the non-destructive method(C-scan method) was used to determine the damage area. A device previously developed for impact testing of composite structures was used as the vertical free-falling testing machine. By experimenting with composite structures, we found that substantial differences in the responses of laminates subjected to either flat-plate or shell to transverse loading. And contact force, damage area and absorbed energy of the composite shells were a function of the curvature radius and impact energy.

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Section: Resultssupporting

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Impact Response and Damage of Composite Shell with Various Curvatures

Kim

Yang

2004

KEM

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“…It was evident that the damage inside the composite prior to buckling decreased the critical load significantly [2]. In their publications by Wardle et al [3][4][5] cylindrical composite panels have been examined under transverse concentrated point loading. Both critical loads and buckling modes have been investigated experimentally and numerically using a finite element technique.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of buckling response of composite shells compressed transversely between rigid platens

Cui

Bhattacharyya

Moltschaniwskyj

2005

Composites Part B: Engineering

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“…It is widely reported that there is broad equivalence between QSI and LVI loading conditions in composite plate specimens. 7–9 However, differences have also been reported based on the specimen stiffness 10 and material system. 11 Whilst the vast majority of research has been conducted on plate specimens, some authors have considered the similarity of the two loading regimes in composite materials in tubular geometries.…”

Section: Introductionmentioning

confidence: 99%

A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels

Allen

Ahmed

Hepples

et al. 2018

Journal of Composite Materials

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The equivalence of quasi-static indentation and low-velocity impact loading regimes has been assessed for composite overwrapped pressure vessels. Test specimens were assessed in detail in terms of the force–displacement response, and micro-focus computed tomography was used for qualitative and quantitative assessment of the associated damage to the constituent materials/interfaces. The results show that the force–displacement response follows an essentially similar pattern between the two loading regimes (within 10% for all cases). Quantitative assessment of the projected composite damage area and permanent deformation of the aluminium substrate as a function of peak indentor displacement also showed a high degree of equivalence between the loading regimes. It is concluded that quasi-static indentation represents a usable analogue for mechanistic assessment of low-velocity impact damage in the tested composite overwrapped pressure vessels.

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Behavior of Composite Shells Under Transverse Impact and Quasi-Static Loading

Cited by 17 publications

References 14 publications

Impact Response and Damage of Composite Shell with Various Curvatures

Impact Response and Damage of Composite Shell with Various Curvatures

Experimental and numerical study of buckling response of composite shells compressed transversely between rigid platens

A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels

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