The modeling of fiber-reinforced thermoplastics (composites) is more complex than in other applications, since the parts are usually thin and shorter fibers are often used.Other aspects, such as the 3-dimensional orientation of the fibers and the significant orientation variations across the part also contribute to the complexity of the problem.
Gate position and fiber orientation
Fiber orientation on Peek + Glassfiber part
Fiber orientation - IXEF + 50% Glassfiber
In injection-molded composites, the fiber alignment (or orientation) distributions show a layered nature, and are affected by:
Without proper consideration of the fiber behavior, there is a tendency to significantly overestimate the orientation levels. The results from a fiber orientation analysis can be used as input for a warpage analysis, providing more detailed elemental results, and considerably enhanced analysis accuracy.
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