highway wind damage
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Category 5 Hurricane Wind DamageFEA stress analysis
Highway Sign
10/29/2017 rev BDon Blanchet
3B Associates
dwb3298@verizon.net
Prepared for: FL-DOT1
Solidworks 2018 model
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Steel construction welded and boltedSteady 200 MPH wind loading
FEA mesh – 450,000 d.o.f.
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Boundary Conditions
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Bolted to heavyConcrete supports2 places
Results: permanent deformation – 2.89 inches
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Results: peak stress
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Steel yield pointExceeded
Near base of verticalsupports
Conclusions
Simple static analysis predicts failure at a steady wind pressure.
More complex dynamic analysis recommended CFD turbulence calculations to predict vibration response due to downstream vortex shedding.
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