Damage and failure in low energy impact of fiber-reinforced polymeric composite laminates

Batra, R.C.; Gopinath, G.; Zheng, James

doi:10.1016/j.compstruct.2011.08.015

Cited by 130 publications

(56 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By physical evaluation of the surface roughness, the friction coefficient for the contact surfaces of the rollers and specimens was assumed equal to μ=0.3. Batra et al [38] assumed μ=0.25 for this coefficient in determining of contact between composite beams and supports.…”

Section: Fe Modeling Proceduresmentioning

confidence: 99%

Investigation of stiffness degradation progress in Glass/Vinylester laminated beams under large deformations

2017

View full text Add to dashboard Cite

There are many reports indicating that the maximum measured stress in the composite laminated beams under flexural loading appears different from that under tensile loading. The current study compares the results of Hashin failure criteria in the form of stress and strain components for prediction of failure strength in GFRP laminated beams. In the experimental program the composite laminates were tested under tensile and three-point-bending (3PB) loads. Then, it was trying to predict the flexural failure in laminates based on the measured ultimate stresses and strains in the tensile tests. The strain-based failure criteria employed in the FE models could achieve more admissible predictions for maximum load carrying capacity in the laminates compared to the stress-based criteria. Progressive failure analyses showed that due to higher elastic modulus of laminates under bending load, the maximum experienced stress under bending load becomes larger.

show abstract

Section: Fe Modeling Proceduresmentioning

confidence: 99%

Investigation of stiffness degradation progress in Glass/Vinylester laminated beams under large deformations

2017

View full text Add to dashboard Cite

show abstract

“…By physical evaluation of the contact surfaces, the friction coefficient between the rollers and the specimens was assumed to be μ=0.3. Batra et al (2012) assumed this coefficient as μ=0.25 for simulation of the contact between the composite beams and metallic supports. The mesh convergence study showed that discretizing the thickness of the UD laminates by one element per layer produces a sufficient accuracy but in the laminates with different orientation of the adjacent layers, each layer must be discretized by at minimum two elements.…”

Section: Finite Elements Modelingmentioning

confidence: 99%

On the Decreasing Flexural Modulus of Glass/Vinylester Composite Beams Up to Failure State

Kabir

Nazari

Hosseini‐Toudeshky

2017

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

The comparison of the failure state for composite laminates under bending and tensile loads is a well-known issue which has been intensively discussed in the literature. The scope of the current work is to investigate the appropriate method of the flexural modulus of the composite laminates by the aid of experimental and numerical approach. The primary objective of this study is to compare the experimental measurements of the elastic modulus of the composite laminates under the tensile and flexural tests. The numerical study is performed through progressive damage analysis (PDA) approach which is verified by simulation of the tensile specimens. This procedure is then used to predict the failure of the beam specimens under three-point-bending (3PB) test. Both interlaminar and intra-laminar damages are included in the developed models. The first type of damage is examined based on the continuum damage mechanics (CDM) approach and the second one based on the virtual crack closure technique (VCCT). The variation of the flexural modulus and ultimate strength of the composite beams is considerably depends on loading types and lay-up configurations. In this study, it is proven that the strain-based failure criterion can predict the realistic failure mode of the composite beams in consistency with the ultimate strains which was obtained from a simple tensile test.

show abstract

“…These problems and cost of experimentation can be avoided by using numerical methods, which can help in predicting the energy absorption and peak loads by considering competing mechanisms [6][7][8]. The combination of improved constitutive modelling and decreased computational costs make it possible to utilise continuum modelling of sandwich composites to numerically simulate impact response for a much wider range of impactor geometries and velocities [9].…”

Section: Introductionmentioning

confidence: 99%

Development of a finite element model for the simulation of parabolic impact of sandwich panels

Ramakrishnan

Guérard

Mahéo

et al. 2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Sandwich panels are lightweight structures of two thin high strength facesheets bonded to either side of a thick low density core such as foams and honeycombs. It is necessary to study the impact response of sandwich structures in order to ensure the reliability and safety of these structures. The response of sandwich panels to impact loading is usually studied for impact at normal angle of incidence. In real engineering situations, the structures are more frequently loaded at some oblique angle or with a complex trajectory. It is easy to carry out normal impact tests using devices like the drop tower, but impacts at oblique angles are difficult to characterise experimentally. A tri-dimensional impact device called Hexapod has been developed to experimentally study the impact loading of sandwich plates with a parabolic trajectory. The Hexapod is a modified Gough-Stewart platform that can be moved independently in the six degrees of freedom, corresponding to three translation axes and three rotation axes. In this paper, an approach for modelling the parabolic impact of sandwich structures with thin metallic facesheets and polymer foam core using commercial finite element code LS-DYNA software is presented. The results of the FE model of sandwich panels are compared with experimental data in terms of the time history of vertical and horizontal components of force. A comparison of the strain history obtained from Digital Image Correlation and LS-Dyna model are also presented.

show abstract

Damage and failure in low energy impact of fiber-reinforced polymeric composite laminates

Cited by 130 publications

References 30 publications

Investigation of stiffness degradation progress in Glass/Vinylester laminated beams under large deformations

Investigation of stiffness degradation progress in Glass/Vinylester laminated beams under large deformations

On the Decreasing Flexural Modulus of Glass/Vinylester Composite Beams Up to Failure State

Development of a finite element model for the simulation of parabolic impact of sandwich panels

Contact Info

Product

Resources

About