scholarly journals Experimental and numerical investigation of the contact behavior during FE forming simulation of continuously reinforced composites in wet compression molding

2019 ◽  
Author(s):  
Christian Poppe ◽  
Dominik Dörr ◽  
Fabian Kraus ◽  
Luise Kärger
Keyword(s):  
Numerical Investigation ◽  
Compression Molding ◽  
Reinforced Composites ◽  
Contact Behavior ◽  
Forming Simulation ◽  
Wet Compression

BVID analysis of non-crimp fabric cross-ply laminate manufactured through wet compression molding process

2020 ◽  
Author(s):  
Sooyoung Lee ◽  
Chaeyoung Hong ◽  
Taeseong Choi ◽  
Hye-gyu Kim ◽  
Wooseok Ji
Keyword(s):  
Compression Molding ◽  
Molding Process ◽  
Wet Compression

Numerical Investigation on Impact Energy Absorption of Single-Walled Carbon Nanotube Reinforced Composites

2012 ◽  
Author(s):  
Lingyu Sun ◽  
Jian Zhang ◽  
Dingxin Leng
Keyword(s):  
Numerical Investigation ◽  
Energy Absorption ◽  
Impact Energy ◽  
Metal Matrix ◽  
Failure Modes ◽  
Volume Fraction ◽  
Matrix Material ◽  
Reinforced Composites ◽  
Alloy Matrix ◽  
The Impact

With the exceptional mechanical properties, carbon nanotubes (CNTs) are considered to be attractive candidate reinforcements for composite materials and to have potential applications in improving the energy absorption capability of matrix material. However, it is still difficult to reveal the micro-mechanisms of the impact energy absorption of CNT-reinforced composites by experiments, hence, the numerical investigation is helpful. In this paper, a unit cell of single-walled CNTs (SWCNTs) embedded in metal matrix is modeled by nano-scale finite element method. Under impact loads, the failure modes of a single SWCNT and the SWCNT in matrix are predicted, respectively, and several possible energy absorption mechanisms are explained and compared. The investigation shows that, the metal matrix restraints the radial expansion of the SWCNT and therefore improves its crush buckling resistance, and makes it absorb more energy before collapse. The specific energy absorption of SWCNTs-reinforce composites increases with the increasing volume fraction of SWCNTs in both matrixes, and ascends more quickly in magnesium alloy than in aluminum alloy matrix.

scholarly journals CSAI analysis of non-crimp fabric cross-ply laminate manufactured through wet compression molding process

2021 ◽  
Vol 255 ◽  
pp. 113056
Author(s):  
Sooyoung Lee ◽  
Chaeyoung Hong ◽  
Taeseong Choi ◽  
Hye-gyu Kim ◽  
Seong-Woo Im ◽  
...  
Keyword(s):  
Compression Molding ◽  
Molding Process ◽  
Wet Compression

scholarly journals Development of a Modular Draping Test Bench for Analysis of Infiltrated Woven Fabrics in Wet Compression Molding

2019 ◽  
Vol 809 ◽  
pp. 35-40
Author(s):  
Fabian Albrecht ◽  
Clemens Zimmerling ◽  
Christian Poppe ◽  
Luise Kärger ◽  
Frank Henning
Keyword(s):  
Test Bench ◽  
Compression Molding ◽  
Woven Fabrics ◽  
Forming Process ◽  
Process Step ◽  
Cycle Times ◽  
Reinforced Plastics ◽  
Local Material ◽  
Comprehensive Knowledge ◽  
Wet Compression

The wet compression molding (WCM) process enables short cycle times for production of fiber-reinforced plastics due to simultaneous infiltration, viscous draping and consolidation in one process step. This requires a comprehensive knowledge of occurring mutual dependencies in particular for the development of process simulation methods and for process optimization. In this context, it is necessary to develop suitable test benches to enable an evaluation of the outlined viscous draping behavior. In order to evaluate and suitably design the draping process, grippers are mounted on a surrounding frame, which enables targeted restraining of the local material draw-in during forming. In supporting the development of the new test bench, first experimental and simulation results are compared, which thereby enables a first validation of the simulation approaches. Results show a good agreement between experimental and numerical results in terms of shear deformation and final gripper displacement under dry and viscous conditions. Results recommend that future development for investigations of viscous draping effects should focus an enabling measurement of gripper displacement during the forming process. Beyond that, the modular test bench design enables experimental and virtual draping optimization and deduction of blank holder concepts for WCM tools.

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