Page Comparison

Simulations on two different composite stack ups, figuring out the best material (unidirectional vs weave) for the catamaran.

Stackup 1

1. Unidirectional Prepreg (230 GPa) 0 degrees
2. Unidirectional Prepreg (230 GPa) 90 degrees
3. 5/8" Honeycomb Core
4. Unidirectional Prepreg (230 GPa) 90 degrees
5. Unidirectional Prepreg (230 GPa) 0 degrees

Stackup 2

1. Weave Prepreg (230 GPa) 0 degrees
2. Weave Prepreg (230 GPa) 45 degrees
3. 5/8" Honeycomb Core
4. Weave Prepreg (230 GPa) 45 degrees
5. Weave Prepreg (230 GPa) 0 degrees

Note: 0 degrees is the path from left to right on the catamaran

Workbench Setup

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Static Structural Setup

1. Fixed point at the center of the catamaran
2. 10000N of downwards force on the front driver side corner and the rear passenger side corner
3. 10000N of upwards force on rear driver side corner and the front passenger side corner

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Here are the results (The colors correspond to different values in stackup 1 vs stackup 2)

Stackup 1

1. Unidirectional Prepreg 0 degreesImage Removed
2. Unidirectional Prepreg 90 degreesImage Removed
3. 5/8" Honeycomb CoreImage Removed
4. Unidirectional Prepreg 90 degreesImage Removed
5. Unidirectional Prepreg 0 degreesImage Removed

Stackup 2

1. Weave Prepreg 0 degreesImage Removed
2. Weave Prepreg 45 degreesImage Removed
3. 5/8" Honeycomb CoreImage Removed
4. Weave Prepreg 45 degreesImage Removed
5. Weave Prepreg 0 degreesImage Removed

My initial analysis:

• The unidirectional has less stress on the sides
• Stress seems to be better distributed on the front and back panels with the weave