Acomodação estrutural na associação de cascas axi-simétricas sujeitas a pressões internas

Abstract

This work has the objective of determining the lower bound estimates of the shakedown pressure for flush radial cilinder-sphere intersections. Two elastic analysis methods were developed to find the stresses at the junction, where the most charged elements are situated. The shakedown pressure was achieved by applying Melan's theorem and using the results of the elastic analysis obtained from one of the methods: The Asymptotic method, which is used when the geometric parameter k, of the sphere, is under 30 and the Simplified Method when k is greater than this value. To find the results, a program was made, and it gives besides the shakedown pressure other useful intermediate values. The vessel pressure is increased up to the shakedown pressure, by using a maximizing subroutine of the IMSL, whith is at the Burroughs 6700 Computer from COPPE, and was inserted in the body of our program.