Torsion Tab
Randomly curved fibers and sine fibers with elliptical, cellulose, and rectangular cross-section can be twisted to achieve torsion. The Torsion Angle defines how strongly the fibers are twisted within the first segment length. The Maximum Torsion Change adds a random component by allowing the torsion to change from one segment to the next.
Torsion Angle
The following examples show the effect of varying the Torsion Angle on sine fibers with an elliptical cross-section, with both amplitude values set to 0 to create straight fibers as a base. The torsion angle is set as indicated (0º, 10º, and 45º) while all other parameters are kept unchanged.
The torsion angle can be set to have a Constant value, or to follow a diameter distribution (Uniformly in interval, or Probability Distribution).
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Max Torsion Change
The Maximum Torsion Change determines the maximum allowed degree of change of the Torsion Angle from one segment to the next. The torsion change between different segments is uniformly distributed.
In the following examples, all randomness parameters are left unchanged, while the Max Torsion Change changes from 0º, to 15º, and finally to 30º. The segment length is always the default 50 µm.
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Combination with Segment Length
The association between Torsion Angle and Segment Length (under the Shape tab) can be observed in the following examples where the torsion angle is kept at a constant value of 45° whereas the segment length varies from the default 50 µm, to 25 µm, and finally to 10 µm.
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