Impact on multi-layered polypropylene foams

Mahéo, Laurent; Viot, Philippe

doi:10.1016/j.ijimpeng.2012.03.011

Cited by 34 publications

(14 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The second one is a non-homogeneous strain field area which is located at the center of the specimen. This non-homogeneity is due to foam beads with different densities which involve localization of deformation [9]. A average of strain field can be performed in this area to get the mean strain distorsion.…”

Section: Shear Test Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Multiaxial behavior of foams – Experiments and modeling

Mahéo

Guérard

Rio

et al. 2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Cellular materials are strongly related to pressure level inside the material. It is therefore important to use experiments which can highlight (i) the pressure-volume behavior, (ii) the shear-shape behavior for different pressure level. Authors propose to use hydrostatic compressive, shear and combined pressure-shear tests to determine cellular materials behavior. Finite Element Modeling must take into account these behavior specificities. Authors chose to use a behavior law with a Hyperelastic, a Viscous and a Hysteretic contributions. Specific developments has been performed on the Hyperelastic one by separating the spherical and the deviatoric part to take into account volume change and shape change characteristics of cellular materials.

show abstract

Section: Shear Test Resultsmentioning

confidence: 99%

“…Uniaxial compressive tests can be performed in quasistatic conditions using an electromechanical device or in dynamic conditions using a flywheel device or a SplitHopkinson Pressure Bar device as in [7][8][9]. Classical foam behavior is observed in Fig.…”

Section: Uniaxial Compressive Testmentioning

confidence: 99%

Multiaxial behavior of foams – Experiments and modeling

Mahéo

Guérard

Rio

et al. 2015

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…Reid and Peng (1997) presented the one-dimensional shock-wave model, namely, the rigid-perfectly-plastic-locking (R-P-P-L) model, for cellular solids and is used in many works (Harrigan et al, 2010; Ma and Ye, 2007; Maheo and Viot, 2013; Main and Gazonas, 2008) However, a shock wave can be generated at a very low impact velocity using R-P-P-L. This conflicts with the test observation.…”

Section: Introductionmentioning

confidence: 99%

Mesoscopic investigation of layered graded metallic foams under dynamic compaction

Zhang

Fan

et al. 2018

Advances in Structural Engineering

View full text Add to dashboard Cite

This article is aimed to reveal the dynamic response of layered graded metallic foam under impact loading using a three-dimensional mesoscopic model. First, a mesoscopic model for closed-cell metallic foam is proposed based on the X-ray computed tomography images. Second, a numerical analysis approach is presented and validated with test data. Third, it studies the dynamic behavior of the layered graded metallic foam under impact loading numerically. The metallic foam specimen is composed layer by layer. The porosity, which is a fraction of the voids volume over the total volume, is different with each other for the layers. Simulations are conducted to the specimen with increasing and decreasing porosity arrangement. Results show that the layer arrangement is critical to the dynamic properties. The mesoscopic deformation of cell walls and the energy absorption capability are also affected significantly. This article gives insights into the mechanical properties and mesoscopic deformation of layered graded metallic foam.

show abstract

“…This last feature is especially interesting when considering passive safety applications. Depending on the level of stress requiblack, it is possible to modify their composition or structure [2]. However, today this is mainly done by changing the density of the cellular material [3].…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of cellular materials with short fibres: Application to a bio-based cork multi-scale foam

Barbenchon

Kopp

Girardot

et al. 2020

Mechanics of Materials

View full text Add to dashboard Cite

A bio-sourced foam, agglomerated cork, was chosen to evaluate the influence of short fibres on the mechanical behaviour of cellular materials. The final material was obtained by mixing cork particles with a thermoset resin. Rigid short fibres were then added before uni-axial compression. Enhancing the foam's mechanical properties without increasing the density is a current problem in transport industries. In this article, we demonstrate how the addition of short fibres strongly modifies the mechanical behaviour of agglomerated foam materials. Dynamic Mechanical Analysis technique revealed that the glass temperature was greater for reinforced foams and more energy loss by heat in visco-elasticity was also noticed for this material. In quasistatic compression, rigidity was strongly enhanced, causing absorbed energy before densification to increase. Maximal force and displacement before fracture were studied by applying Mode I fracture tests, and both were improved by the addition of short fibres. The mesoscopic and microscopic observations revealed it was linked to fracture mechanisms, most of which happen inside cork beads for the reinforced cellular material. The properties of agglomerated foams may then be improved and tailoblack by the addtion of short fibres and make weight saving possible in several industrial applications.

show abstract

Impact on multi-layered polypropylene foams

Cited by 34 publications

References 11 publications

Multiaxial behavior of foams – Experiments and modeling

Multiaxial behavior of foams – Experiments and modeling

Mesoscopic investigation of layered graded metallic foams under dynamic compaction

Reinforcement of cellular materials with short fibres: Application to a bio-based cork multi-scale foam

Contact Info

Product

Resources

About