Stress–strain behavior of composites under high strain rate compression along thickness direction: Effect of loading condition

Naik, N.K.; Rao, K.V.S.S. Narayana; Veerraju, Ch.; Ravikumar, G.

doi:10.1016/j.matdes.2009.06.005

Cited by 28 publications

(18 citation statements)

References 22 publications

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“…The SHPB testing can suffice nearly the uniaxial stress state and also be used as a tool to validate the determined constituti ve relations. The compressive dynamic behavior of various composites has been previousl y investigated [1][2][3][4][5] using hydraulic testing machines (strain rates up to $100 s…”

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confidence: 99%

“…The specimen dimensions are very critical in the SHPB testing. It was previously reported that the length to diameter ratio of cylindrical specimens should be between 0.5 and 2.0 in order to achieve dynamic equilibrium in the specimen during testing [1,17]. Cylindrical specimens with length to diameter ratio of one were core-drilled from the prepared plate in longitudinal, long transverse, and through-thicknes s directions.…”

mentioning

confidence: 99%

“…The compressive strength and failure strain of a E-glass fiber/epoxy at the strain rate of 1305 s À1 were reported 540 MPa and $0.05, respectively [1]. An inclined crack with a 45 °angle bisects through-thickness specimens into two regions.…”

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confidence: 99%

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Modeling quasi-static and high strain rate deformation and failure behavior of a (±45) symmetric E-glass/polyester composite under compressive loading

2013

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a b s t r a c tQuasi-static (1 Â 10 À3-1 Â 10 À2 s À1) and high strain rate ($1000 s À1) compressive mechanical response and fracture/failure of a (±45) symmetric E-glass/polyester composite along three perpen dicular directions were determined experimentally and numerically. A numerical model in LS-DYNA 971 usi ng material model MAT_162 was developed to investigate the compression deformation and fracture of the comp osite at quasi-static and high strain rates. The compressive stress-strain behaviors of the composite along three directions were found strain rate sensitive. The modulus and maximum stress of the composite increased with increasing strain rate, while the strain rate sensitivity in in-plane direction was higher than that in through-thickness direction. The damage progression determined by high speed camera in the specimens well agreed with that of numerical model. The numerical model successfully predicted the damage initiation and progression as well as the failure modes of the composite.

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Modeling quasi-static and high strain rate deformation and failure behavior of a (±45) symmetric E-glass/polyester composite under compressive loading

2013

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“…Many test methods have been developed to facilitate the dynamic characterisation of composite materials at high deformation rates. Previous test studies 8 highlighted the increase in stiffness and strength of composites with an increasing strain rate in matrix-dominated regions [17][18][19][20][21]. In some cases, explicit empirical relations were formulated to derive such material properties at corresponding strain-rates [20][21].…”

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confidence: 99%

Optimising curvature of carbon fibre-reinforced polymer composite panel for improved blast resistance: Finite-element analysis

et al. 2014

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Numerical studies were conducted to investigate the optimum curvature of a carbon fibrereinforced polymer (CFRP) panel that would provide an improved blast resistance. A dynamic finite-element (FE) model that incorporates fluid-structure interaction was developed to evaluate the response of these panels to blast in commercial finite-element software ABAQUS/Explicit. Previously reported experimental data by authors were utilised to validate a FE model, where a shock-tube apparatus was utilized to apply a controlled shock loading to quasi-isotropic composite panels with different radii of curvature. A threedimensional digital image correlation (DIC) technique coupled with high-speed photography was employed to measure out-of-plane deflections and velocities, as well as in-plane strains at the back face of panels. Macroscopic post-mortem analysis was performed to compare the deformation in these panels. The numerical results were compared to the experimental data and demonstrated a good agreement. The validated FE model was further used to predict the optimal curvature of CFRP panel with the aim to improve its blast-mitigation characteristics.

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“…There are typical studies on split Hopkinson pressure bar testing technique [22][23][24][25][26][27][28][29][30]. In some of our recent studies on WF composites [31][32][33] and epoxy resin [34,35], the strain rate was up to 2000 s À1 . Wang et al [36] presented an analytical method for assessing strain rate sensitivity of unidirectional composite laminates.…”

Section: Introductionmentioning

confidence: 99%

Analytical and experimental studies on mechanical behavior of composites under high strain rate compressive loading

et al. 2013

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Stress–strain behavior of composites under high strain rate compression along thickness direction: Effect of loading condition

Cited by 28 publications

References 22 publications

Modeling quasi-static and high strain rate deformation and failure behavior of a (±45) symmetric E-glass/polyester composite under compressive loading

Modeling quasi-static and high strain rate deformation and failure behavior of a (±45) symmetric E-glass/polyester composite under compressive loading

Optimising curvature of carbon fibre-reinforced polymer composite panel for improved blast resistance: Finite-element analysis

Analytical and experimental studies on mechanical behavior of composites under high strain rate compressive loading

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