The mesh elements are created along the midsurface

• Aluminum (E=70000 MPa, nu=0.3, rho=2.7e-9 tonn/mm^3)
• Chord:
  • average diameter: 50mm
  • wall thickness: 4mm
• Brace:
  • average diameter: 40mm
  • wall thickness: 2mm

apply a torsional moment passing through the chord s.t. the nominal shear stress according to the beam theory is 1 MPa; evaluate the stress concentration at the joint as the peak equivalent von Mises stress (according to the employed discretization).

nominal section properties

initial mesh

final version

Esercizio complementare

esercizio_portale_caricato_fuoripiano_v001.wxmx