Compression molding of semi-concentrated fiber suspensions: Flow and fiber orientation
Alexandrou, Andreas N.
PublisherPubl by ASME
Place of publicationNew York, NY, United States
SourceAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Google Scholar check
MetadataShow full item record
The focus of this paper is compression molding of semi-concentrated fiber suspensions. During compression molding a premeasured amount of raw material (charge) is placed between two halves of a die. The die is then closed so that the charge is compressed, thus taking the shape of the die. In this paper we used the theory developed by Dinh and Armstrong for semi-concentrated fiber suspensions, although the theoretical background and numerical procedures developed in this paper can be extended to other theories as well. The constitutive equations are expressed in terms of the flow kinematics through the use of Finger and Cauchy finite deformation tensors which are approximated numerically using a semi-implicit finite difference scheme. The full unsteady form of the governing equations are formulated using a mixed Eulerian-Lagrangian description and solved using a classical Galerkin Finite Element Method. Results are shown for the filling of a two-dimensional cavity under various process conditions such as constant compression rate, constant compression force and at different fiber concentrations and fiber aspect ratios.
Showing items related by title, author, creator and subject.
Suppression of power fluctuations due to interaction between cascaded automatic channel power equalizers and fiber amplifiers in a 1018-km fiber link in a reconfigurable multiwavelength network Yoo, S. J. B.; Young, J. C.; Xin, W.; Ellinas, Georgios N.; Rauch, M.; Leblanc, H.; Baran, J.; Meagher, B.; Chang, G. -K; Garrett, L. D. (1998)
Transport of ellipsoid fibers in oscillatory shear flows: Implications for aerosol deposition in deep airways Shachar-Berman, L.; Ostrovski, Y.; Rosis, A. De; Kassinos, Stavros C.; Sznitman, J. (2018)It is widely acknowledged that inhaled fibers, e.g. air pollutants and anthropogenic particulate matter, hold the ability to deposit deep into the lungs reaching the distal pulmonary acinar airways as a result of their ...
Detailing procedures for seismic rehabilitation of reinforced concrete members with fiber reinforced polymers Tastani, S. P.; Pantazopoulou, Stavroula J. (2008)