Determination of orthotropic properties of glass fibre reinforced thermoplastics using X-ray tomography and multiscale finite element computation

2016 ◽  
Vol 136 ◽  
pp. 635-649 ◽  
Author(s):  
Abderrahmane Ayadi ◽  
Hedi Nouri ◽  
Sofiane Guessasma ◽  
Frederic Roger
Keyword(s):  
Finite Element ◽  
Glass Fibre ◽  
X Ray ◽  
Glass Fibre Reinforced ◽  
Element Computation ◽  
Multiscale Finite Element ◽  
Orthotropic Properties ◽  
Reinforced Thermoplastics ◽  
Finite Element Computation

An ABAQUS toolbox for multiscale finite element computation

2013 ◽  
Vol 52 ◽  
pp. 323-333 ◽  
Author(s):  
Adjovi Tchalla ◽  
Salim Belouettar ◽  
Ahmed Makradi ◽  
Hamid Zahrouni
Keyword(s):  
Finite Element ◽  
Element Computation ◽  
Multiscale Finite Element ◽  
Finite Element Computation

Some Modeling Issues on the Finite Element Computation of Thermal Stresses in Metal Lines

1993 ◽  
Vol 115 (4) ◽  
pp. 392-403 ◽  
Author(s):  
Arturo O. Cifuentes ◽  
Iqbal A. Shareef
Keyword(s):  
Finite Element ◽  
Stress Field ◽  
Geometric Nonlinearity ◽  
Thermal Stresses ◽  
Element Computation ◽  
Element Technique ◽  
Versus Plane ◽  
Evolving Models ◽  
Finite Element Computation

Thermal stresses are a major concern in the reliability of metal lines. This paper addresses some modeling issues concerning the determination of thermal stresses in such structures. Specifically, a finite element technique that allows one to follow the evolution of the stress field as a function of the steps of the manufacturing process is discussed. In addition, comparisons between several modeling strategies, namely, plane stress versus plane strain, geometric nonlinearity versus geometric linearity, “frozen view” models versus “evolving” models, etc., are presented. A detailed example describing the manufacturing of a copper line is included to illustrate these points.

scholarly journals Microstructure and Mechanical Performance of 3D Printed Wood-PLA/PHA Using Fused Deposition Modelling: Effect of Printing Temperature

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1778 ◽  
Author(s):  
Guessasma ◽  
Belhabib ◽  
Nouri
Keyword(s):  
Finite Element ◽  
Mechanical Performance ◽  
Tensile Behaviour ◽  
Fused Deposition Modelling ◽  
X Ray ◽  
Fused Deposition ◽  
Element Computation ◽  
3D Printed ◽  
Micro Tomography ◽  
Finite Element Computation

The microstructure and mechanical performance of wood-based filament is investigated in the case of Fused Deposition Modelling (FDM) technique using experimental and numerical approaches. The printing process of wood-PLA/PHA is conducted by varying the printing temperature, typically from 210 °C to 250 °C. The filament temperature during the laying down is measured using infra-red camera to study the thermal cycling. In addition, X-ray micro-tomography is used to evaluate the material arrangement of printed wood-PLA/PHA at different length scales. Tensile experiments are performed to rank the loss in mechanical performance with respect to the filament properties. Finally, finite element computation is considered to predict the tensile behaviour based on the implementation of the real 3D microstructure issued from X-ray micro-tomography. The results show that the wood-based filament is printable over a wide range of temperatures and exhibits a marked heat accumulation tendency at high printing temperatures. However, the limited gain in tensile performance at these temperatures makes 220 °C an optimal choice for printing wood-based filament. The elongation at break of 3D-printed wood-PLA/PHA is remarkably similar to the results observed for the filament. Finite element computation reveals that despite this apparent similarity, the associated deformation mechanisms are different.

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