Material Modeling of Structural Foams in Finite Element Analysis Using Compressive Uniaxial and Triaxial Data

Founas, M.; Nusholtz, Guy S.

doi:10.4271/930434

Cited by 15 publications

(3 citation statements)

References 4 publications

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“…The first is continuum modelling. A number of theories have been presented, namely critical state theory, which is used in standard finite element codes such as ABAQUS, and enhancements have been developed to take account of specific foam behaviour [9][10][11][12][13][14][15][16][17]. The second approach is micro-modelling, in which the actual cellular structure is modelled [18].…”

Section: Introductionmentioning

confidence: 99%

Strain Measures for Rigid Crushable Foam in Uniaxial Compression

Mines

2002

Strain

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Progressive collapse deformation mechanisms in Rohacell‐51WF foam during uniaxial compression has been studied. Measures of a macroscopic engineering strain are identified. The elastic and plastic parts of a macroscopic engineering strain can be predicted by using the compression failure strain, lock‐up strain, and time dependent elastic and plastic parts of lock‐up strain, which are material parameters. Identification of strain measures in a uniaxial compression test is essential to get material parameters for an elastoplastic model. The viscoelastic recovery property of Rohacell‐51WF foam is also described.

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Section: Introductionmentioning

confidence: 99%

Strain Measures for Rigid Crushable Foam in Uniaxial Compression

Mines

2002

Strain

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“…11,15 Much work has been done to study the mechanical behavior of polymeric foams, either on their experimental or numerical mechanical characteristics, such as the work of. 5,7,[16][17][18][19] However, none of these studies have led to the determination of the intrinsic parameters of the foams. Standardized tests concerning foams, mainly sandwiches, do not make it possible to directly identify intrinsic properties due to the geometry of the samples.…”

Section: Introductionmentioning

confidence: 99%

A new methodology for the mechanical behavior analysis of polyvinyl chloride and recycled polyethylene terephthalate foams: Finite element model updating using mechanical field measurements

Salloum,

Léger,

Chebbo

et al. 2023

Jnl of Sandwich Structures & Materials

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This paper aims to characterize the intrinsic mechanical behavior of an eco-friendly foam core used in sandwich materials dedicated to the maritime sector. A thorough understanding of intrinsic properties is essential for accurate dimensional structure characterization. The model setup is based on the choice of materials that meet the criteria of sustainable development, mechanical performance, and durability to promote ecological practices in the nautical industry. Experimental tests, instrumented by a digital image correlation technique, were carried out on two types of foams: polyvinyl chloride (PVC), which is the reference foam traditionally used in marine applications, and recycled polyethylene terephthalate (rPET), the substitute foam. The sample sizes recommended by compression test standards often lead to complex stress states that do not allow direct determination of the foam's intrinsic mechanical properties. Therefore, a finite element model updating method was required to identify the anisotropic elastic behavior of these two types of foams.

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“…In some cases it is possible to reduce the forces and hence, the decelerations by a factor of 2 (Ref. 6).…”

Section: Introductionmentioning

confidence: 99%

Fibre reinforced polyurethane foam to increase passive safety of vehicle occupants

Mkrtchyan¹,

Maier²

2007

Plastics, Rubber and Composites

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In order to reduce development and certification time and costs for composite automotive structures, efficient computational methods are needed to predict structural integrity and failure of these structures under dynamic loads, such as appearing in the crash and impact scenarios. Modern finite element codes provide a good basis for simulation of complex dynamic events, particularly in case of the head impact of vehicle occupants. This process includes especially modelling of the complex behaviour of the materials used in the car interior. In present paper the glass mat reinforced polyurethane foam of higher densities is characterised experimentally and modelled with finite element methods in the purpose of increasing the passive safety of the occupants. By using the degenerate biphase material model in PAM-CRASH the behaviour of the reinforced foam is modelled at structural macro level. Furthermore, the damage and energy absorption ability of different ribbed absorbers, fabricated from the composite and real automotive components, A pillars are considered under impact loadings. The constructed finite element material model leads to close agreement with the performed experimental results.

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Material Modeling of Structural Foams in Finite Element Analysis Using Compressive Uniaxial and Triaxial Data

Cited by 15 publications

References 4 publications

Strain Measures for Rigid Crushable Foam in Uniaxial Compression

Strain Measures for Rigid Crushable Foam in Uniaxial Compression

A new methodology for the mechanical behavior analysis of polyvinyl chloride and recycled polyethylene terephthalate foams: Finite element model updating using mechanical field measurements

Fibre reinforced polyurethane foam to increase passive safety of vehicle occupants

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