Finite element analysis of the thermoforming of Polypropylene

O'Connor, Ciaran; Menary, Gary; Martin, Peter; McConville, Eileen

doi:10.1007/s12289-008-0291-x

Cited by 13 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest thinning occurred at the bottom corner radius of the cup where the wall thickness was 1.013 mm, a 16% decrease from the initial sheet thickness of 1.2 mm. Higher thinning and thickness variations were observed in both thermoforming and plug‐assist thermoforming of PP as reported by O'Connor et al [ 17 ] In experiments and numerical modeling, they observed more than 50% decrease in the wall thickness of tapered cups that were thermoformed using 1.23 mm initial sheet thickness and at 150–160°C temperature range.…”

Section: Resultssupporting

confidence: 66%

A numerical study on warm deep drawing of polypropylene

Reddy

Mallick

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

Warm deep drawing of polypropylene, a semi‐crystalline thermoplastic polymer, is studied using finite element analysis. In this process, a circular polypropylene blank is preheated to a temperature much below its melting temperature and deep drawn into the shape of a flat‐bottom cylindrical cup using a punch‐die combination, both initially at 25°C. The material model used for the analysis considers the effects of varying temperature and strain rate during the deep drawing process on the depth of draw. The effects of blank holder force, initial blank temperature, blank diameter, and die and punch corner radii on the depth of draw are determined. Thickness, temperature, and strain variations in the drawn cups, punch forces, and failure modes are also determined.

show abstract

Section: Resultssupporting

confidence: 66%

A numerical study on warm deep drawing of polypropylene

Reddy

Mallick

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…In Abaqus, viscoelasticity can be modeled for large-strain applications as a function of reduced time for time-dependent analyses [24,25]. The viscoelastic model is defined in Abaqus using the Prony series, where the relaxation moduli are given as follows [26,27]:…”

Section: The Constitutive Model Used In Abaqusmentioning

confidence: 99%

Modeling the Thermoforming Process of a Complex Geometry Based on a Thermo-Visco-Hyperelastic Model

Ragoubi,

Ducloud,

Agazzi

et al. 2024

JMMP

View full text Add to dashboard Cite

The thermoforming process is commonly used in industry for the manufacturing of lightweight, thin-walled products from a pre-extruded polymer sheet. Many simulations have been developed to simulate the process and optimize it with computer tools. The development of testing machines has simplified the simulation of this type of process, allowing researchers to characterize the behavior of the material at different temperatures and for large deformation to be closer to the real conditions of the process. This paper presents the results of a study on the modeling of the thermoforming process for an industrial demonstrator made from a high-impact polystyrene (HIPS) polymer. The HIPS shows a mechanical behavior that depends on the temperature and strain rate. In such conditions, a thermo-hyper-viscoelastic constitutive model is used to replicate the thermoforming process of the industrial demonstrator using ABAQUS/Explicit. Its behavior is determined via various experimental tests: uniaxial tensile tests at different temperatures and strain rates and Dynamic Mechanical Analysis (DMA). A comparison between the numerical and experimental results is carried out for the evolution of film thickness. The paper concludes with a discussion of possible improvements to be considered for future simulations of the thermoforming process using Abaqus, which presents complex challenges in terms of contact and material modeling.

show abstract

“…The temperature distribution can be controlled to build non-uniform conditions by zone-heating to prevent the thinner corners under uniform temperature profile [ 15 , 16 ]. The numerical approach by finite element analysis (FEA) offered a way to achieve process modelling of thermoforming validated by the experimental tests [ 17 , 18 , 19 , 20 , 21 ], which helped optimise the operation by virtual testing to improve the traditional trial-and-error method [ 17 , 18 , 19 ]. The temperature could be easily implemented into FEA modelling to perform process simulation at non-uniform or non-isothermal conditions [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling

Wei

2021

Polymers

View full text Add to dashboard Cite

Poly (lactic acid) (PLA) has a broad perspective for manufacturing green thermoplastic products by thermoforming for its biodegradable properties. The mechanical behaviour of PLA has been demonstrated by its strong dependence on temperature and strain rate at biaxial deformation. A nonlinear viscoelastic model by the previous study was employed in a thermoforming process used for food packaging. An optimisation approach was developed by achieving the optimal temperature profile of specimens by defining multiple heating zones based on numerical modelling with finite element analysis (FEA). The forming process of a PLA product was illustrated by modelling results on shape evolution and biaxial strain history. The optimal temperature profile was suggested in scalloped zones to achieve more even thickness distribution. The sensitivity of the optimal results was addressed by checking the robustness under perturbation.

show abstract

Finite element analysis of the thermoforming of Polypropylene

Cited by 13 publications

References 7 publications

A numerical study on warm deep drawing of polypropylene

A numerical study on warm deep drawing of polypropylene

Modeling the Thermoforming Process of a Complex Geometry Based on a Thermo-Visco-Hyperelastic Model

Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling

Contact Info

Product

Resources

About