luca dassa – 23/02/2015 1 / 8 crab cavities meeting preload bolt size (1) shear load: 602 n...
TRANSCRIPT
Luca Dassa – 23/02/2015 1 / 8CRAB cavities meeting
Preload Bolt size (1)
Shear load: 602 N (p=0.26 MPa) -> Min preload: 2006 with Static friction coefficient: 0.3Shear load: 602 N (p=0.26 MPa) -> Min preload: 6020 with Static friction coefficient: 0.1
Luca Dassa – 23/02/2015 2 / 8CRAB cavities meeting
AXIAL + BENDING + SHEARPressure: 2.6 bara (0.26 MPa) / Vessel weight / Static friction coefficient: 0.3Shear load: 602 N Bending moment (16.5 mm) = 4964 Nmm / Bending moment (11.2 mm) = 3369 Nmm
Bolt size (2)
Luca Dassa – 23/02/2015 3 / 8CRAB cavities meeting
ONLY SHEARPressure: 2.6 bara (0.26 MPa) / Vessel weight / Static friction coefficient: 0.3Shear load: 602 N
Bolt size (3)
Luca Dassa – 23/02/2015 4 / 8CRAB cavities meeting
FEA: Frictionless (coarse mesh)
Shear on bolts Bending moment on bolts
WARNING: p=0.18 MPaWarning: overloaded bolts beyond elastic limit!
Bolt size (4)
Luca Dassa – 23/02/2015 5 / 8CRAB cavities meeting
Deformation on the weld seam
Max def = around 0.1 mm
Bolt size (5)
Luca Dassa – 23/02/2015 6 / 8CRAB cavities meeting
Report Load cases
Luca Dassa – 23/02/2015 7 / 8CRAB cavities meeting
Weld seam sizing (long edge) Bolt cover