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aoncurly aoncurly is offline
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Join Date: Nov 2005
Location: San Marino, CA
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The diagonals, much like building diagonals, only see load due to forces perpendicular to the strut/brace. (A building lateral system is your system, rotated 90-degrees, and diagonals are for lateral forces such as wind on a building.) I would agree that the addition of diagonals would increase torsional rigidity, but my comments were in reference to loads you described earlier in your video (you only showed loads in one direction). I think there is differential vertical displacement of the strut towers as the car flexes, thus creating a vertical load component at the strut towers. The actual load path is probably very circuitous so I think it's a bit more complicated than you originally described, but your point is well-taken: the braces will aid in torsional rigidity.
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Old 01-21-2019, 01:10 PM
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