Thanks for all the replies.
I have lots of examples of fuselage bending and pressurization. Bruhn and Niu have been lots of help too.
I am more annoyed that people have been blindly using these equations without a reference or showing their own derivations. I will not use these without a...
New to aviation and getting my feet wet in the analysis side. Analyzing a fuselage mounted antenna installation and was told to use these calculations (attached) for fuselage bending. However I can't find what reference/text book this came from and the person who gave it to me is unaware also...