The Type 9B chassis is one of several chassis
designs used to determine the effect on
chassis torsional stiffness of various design features.
The
chassis is constructed from square tubing. All chassis members are
constructed using 25 mm square steel tube with a 1.6
mm wall thickness.
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The image
above shows the 3D wireframe structure used to perform a simple
stress analysis for this chassis design.
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The image
above shows the predicted stress levels (axial stress along
each tube) in the chassis structure
due to an
applied torsional load. The red colour indicates the most
highly stressed chassis members.
Yellow
indicates moderate stress levels while blue indicates low
stress.
This chassis was tested for theoretical torsional stiffness. A value
of 200 lbs.ft/degree was calculated.
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