Aerospace Structures

Use this for “A fuselage 2 m in radius with 1.6 mm skin is pressurized to 60 kPa above the outside air. Find the hoop and axial stress.”

Use this for “Carbon fibers (230 GPa) fill 60% of an epoxy (3.5 GPa) lamina. Find its modulus across the fibers.”

Use this for “Carbon fibers (230 GPa, 1.8 g/cm³) fill 60% of an epoxy (3.5 GPa, 1.2 g/cm³) lamina. Find its density and its stiffness per unit mass.”

Use this for “A 2 mm aluminum skin spans 100 mm between stringers, its edges simply supported. At what stress does it buckle?”

Use this for “An aluminum strut has σᵧ = 350 MPa, E = 70 GPa and KL ÷ r = 40. At what stress does it fail?”

Use this for “A spar takes 10,000 cycles at a stress with a life of 100,000, then 2000 cycles where the life is 10,000. What damage is used, and how many repeats fail it?”

Use this for “An aluminum part has σ′f = 1000 MPa and b = −0.1. How many cycles does it last at a stress amplitude of 300 MPa?”