Thanks dhengr. I have found some reference material (Roark's Formulas) that has cleared up my issue. According to the 7th edition of Roark's, the transverse shear (due to make up torque) is the dominant force in the threads, due to the fact that the thread is essentially an extremely short...
Thanks for the information Cockroach and Hydtools, however, I am still a little...confused...worried. Let me explain the situation more thouroughly. Due to the double shoulder connections (Vam, Grant Prideco, Etc)that are becoming more prevalent, it is becoming harder to fit parts into a Kelly...
Hi all,
I have been asked to design a 4 TPI Stub Acme thread for a drill string application. Most of my reference material seems to simply design based on a transverse shear area and bending, however, at the top root of the thread, there is a plane stress present that is comprised of the...
