Determination of critical material parameters for numerical simulation of acrylic sheet forming

Dong, Yu; Lin, Richard; Bhattacharyya, Debes

doi:10.1007/s10853-005-6096-0

Cited by 41 publications

(35 citation statements)

References 19 publications

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“…can be determined by the best-fitting of experimental data based on the least square method [32][33][34][35]. v f is the volume fraction of fillers and is a shape factor in relation to filler geometry and loading direction.…”

Section: Mathematical Modellingmentioning

confidence: 99%

Polylactic acid (PLA)/halloysite nanotube (HNT) composite mats: Influence of HNT content and modification

Dong

Marshall

Haroosh

et al. 2015

Composites Part A: Applied Science and Manufacturing

157

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Polylactic acid (PLA)/halloysite nanotube (HNT) composite mats: Influence of HNT content and modification, Composites: Part A (2015), doi: http://dx. AbstractPolylactic acid (PLA)/halloysite nanotube (HNT) composite mats were successfully fabricated via electrospinning. Composite mats reinforced by both unmodified and modified HNTs with a dispersant BYK-9076 were prepared at the HNT contents of 0, 1, 5 and 10 wt%/v. The influence of HNT content and modification was investigated comprehensively, based on several characterisation techniques such as scanning electron microscopy (SEM), Xray diffraction (XRD) analysis, mechanical testing, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR).Typical modified Halpin-Tsai model and modified Halpin-Tsai laminate hybrid model in conventional composite theory were used, which were found difficult to predict the entire experimental data of elastic moduli for PLA/HNT composite mats, possibly arising from the nanosized effect of both HNTs and some electrospun PLA nanofibres within composite mats.

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Section: Mathematical Modellingmentioning

confidence: 99%

Polylactic acid (PLA)/halloysite nanotube (HNT) composite mats: Influence of HNT content and modification

Dong

Marshall

Haroosh

et al. 2015

Composites Part A: Applied Science and Manufacturing

157

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show abstract

“…Between the clamp and the wall the sheet lays on the mold surface and the applied pressure on this surface is zero. The only variation of the sheet thickness in this region stems from the stretching due to the applied Figure 4 Predicted thickness of the Acrylic (PMMA) sheet in the hoop direction at the middle of the sheet compared to the experimental data 21,22 at 1608C. pressure inside the mold.…”

Section: Resultsmentioning

confidence: 99%

Thermoforming process of amorphous polymeric sheets: Modeling and finite element simulations

Makradi

Belouettar²,

Ahzi

et al. 2007

J of Applied Polymer Sci

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A temperature and strain rate dependent model for the thermoforming process of amorphous polymer materials is proposed. The polymeric sheet is heated at a temperature above the glass transition temperature then deformed to take the mold shape by the means of an applied pressure. The applied process temperature is taken uniform throughout the sheet and its variation is due only to the adiabatic heating. The behavior of the polymeric material is described by a micromechanicallybased elastic-viscoplastic model. The simulations are conducted for the poly(methyl methacrylate) using the finite element method. The polymer sheet thickness and the orientation of the polymer molecular chains show an important dependence on the process temperature, the applied pressure profile, and the contact forces with the mold surface.

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“…Material models developed for thermoforming simulation commonly include material properties obtained from uniaxial tests [11,12]. Based on these observations, uniaxial tensile stretching of samples was preferred in place of industrial heavy-gage thermoforming procedure.…”

Section: Thermoforming Experimentsmentioning

confidence: 99%

“…Material models developed for numerical simulations commonly include material properties obtained from uniaxial tests. In numerical simulation of acrylic sheet forming, critical material properties were determined from uniaxial tension tests [11]. Thickness distribution results from numerical simulation were found in good correlation with experimental results [12].…”

Section: Introductionmentioning

confidence: 99%

Micro-deformation mechanisms in thermoformed alumina trihydrate reinforced poly(methyl methacrylate)

Gunel

Basaran

2009

Materials Science and Engineering: A

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Determination of critical material parameters for numerical simulation of acrylic sheet forming

Cited by 41 publications

References 19 publications

Polylactic acid (PLA)/halloysite nanotube (HNT) composite mats: Influence of HNT content and modification

Polylactic acid (PLA)/halloysite nanotube (HNT) composite mats: Influence of HNT content and modification

Thermoforming process of amorphous polymeric sheets: Modeling and finite element simulations

Micro-deformation mechanisms in thermoformed alumina trihydrate reinforced poly(methyl methacrylate)

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