Interal Pressurization Loading
Interal Pressurization Loading
(OP)
Hello All,
I am analyzing a small exterior mounted GPS antenna being installed with an external doubler. I can calculate the shear loading on the rivets due to hoop and longitudinal loading from internal pressurization. My question is, how do you determine what portion of that load acts in tension on the fasteners due to curvature of the fuselage. Essentially, the problem is a cylindrical pressure vessel with a rectangular doubler installed exteriorly with 4 rows of rivets. I can calculate the shear acting on the rivets, but how do you correctly determine any tensile loading on them?
I am analyzing a small exterior mounted GPS antenna being installed with an external doubler. I can calculate the shear loading on the rivets due to hoop and longitudinal loading from internal pressurization. My question is, how do you determine what portion of that load acts in tension on the fasteners due to curvature of the fuselage. Essentially, the problem is a cylindrical pressure vessel with a rectangular doubler installed exteriorly with 4 rows of rivets. I can calculate the shear acting on the rivets, but how do you correctly determine any tensile loading on them?





RE: Interal Pressurization Loading
another day in paradise, or is paradise one day closer ?
RE: Interal Pressurization Loading
another day in paradise, or is paradise one day closer ?
RE: Interal Pressurization Loading
However, if the size of the GPS antenna was understated (some of them have blades), and you actually do have loads at the antenna base, then reinforcement is necessary where the antenna is attached by screws. This reinforcement should resemble a "beam" that traverses from frame to frame (ideally), or stringer to stringer (if necessary).
STF