Calculate the internal pressure, Mechanical Engineering

Assignment Help:

A pressure vessel is to be treated to generate compressive residual stresses on it inner surface. This involves increasing the pressure until taking 75% of the wall thickness goes into the plastic range. The external diameter of the vessel is 250mm and the internal diameter is 120mm, so that it must be regarded as a thick cylinder. The yield stress of the material is approximately 400MPa.

(a) Calculate the internal pressure required

(i) to cause first yield

(ii) to cause yield one third of the way through the wall thickness

(iii) to cause yield all the way across the wall

(b) Using your answers from part (a), sketch a curve of internal pressure versus radius of yielded zone boundary for the cylinder. Comment on the factor of safety against plastic collapse associated with the target amount of yield, taking into account the assumptions inherent in the calculations.


Related Discussions:- Calculate the internal pressure

Closed - open or isolated system, (a) Specify, giving reasons whether the f...

(a) Specify, giving reasons whether the following systems are closed, open or isolated when in operation (i) Kitchen Refrigerator (ii) Ice-cream freezer (iii) Scooter Engi

Determine the isentropic flow through the nozzle, Determine the isentropic ...

Determine the isentropic flow through the nozzle: In an isentropic flow through the nozzle, air flows at rate of 600Kg/hr. At inlet to the nozzle, the pressure is 2Mpa and te

What is floating foundations, What is Floating Foundations The settlem...

What is Floating Foundations The settlement of  foundations can be reduced if the applied load is compensated by excavation of a basement. This basement may be in the form of

Shear force and bending moment diagram, Shear force and bending moment diag...

Shear force and bending moment diagram: How can you draw a shear force and bending moment diagram. Sol.: In these diagrams, the Shear Force or bending moment are repr

Energy, What is solar energy?

What is solar energy?

Connecting rod, how to design a steel connecting rod using minimum weight a...

how to design a steel connecting rod using minimum weight and thickness?

Determine the dimensions of the tank, Determine the dimensions of the tank:...

Determine the dimensions of the tank: A conical water tank is to be fabricated from steel plate of 10 mm thickness. The shell should contain an apex angle (α) 15o. If the perm

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd