ISSN:
0193-7197
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Long glass fiber reinforced PP sheets, called stampable sheets, are attractive materials because of their light weight, high strength, high moldability, recyclability, and so on. Therefore, stampable sheets have been used in comparatively large products such as bumper beams or seat shells in the car industry. In order to design molds and select adequate molding conditions, flow patterns of stampable sheet must be characterized. In this paper, we carried out the finite element method of the flow of stampable sheet, using the lamination theory. One-ply sheet can be regarded as two PP resin layers and one reinforced layer. Large deformation analysis was performed with heat condition analysis, and the material was modeled as an elastic-perfect plastic material. In-plane and out-plane flow patterns were analyzed. In the former, the material flow occurred in the plane, as in the fabrication of plane sheet, and in the latter, the flow pattern was as in the case of ribs or boss parts. Numerical results suggested that in-plane flow was characterized by slippage flow, and out-plane flow was characterized by squeezing flow.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/vnl.730010313
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