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

Thermodynamics, show that energy of an isolated system is conserved

show that energy of an isolated system is conserved

Resultant of coplanar concurrent force system, Resultant of coplanar concur...

Resultant of coplanar concurrent force system: The resultant force, of given system of forces can be found out by the resolution method, which is discussed below: Assume th

Formed heads of vessels, Q. Formed heads of vessels? Formed heads are g...

Q. Formed heads of vessels? Formed heads are generally of 2:1 semi ellipsoidal form, but other heads may be used, such as hemispherical, torispherical, conical and toriconical.

Which functions used for coating, Q. Which functions used for coating? ...

Q. Which functions used for coating? • Improves arc stability by providing certain chemical which have this ability, by ionizing the path of arc. • Provides a protective gaseou

Bore - thermodynamics, Bore - Thermodynamics: The inner diameter of en...

Bore - Thermodynamics: The inner diameter of engine cylinder is called as bore. It can be measured by a vernier calliper or bore gauge. As engine cylinder wears out with the p

Compute the force exerted by the tires on the road, Compute the force exert...

Compute the force exerted by the tires on the road: An automobile of mass 1500 kg traverses a 500 m curve at a constant speed of 50 kmph. Supposing no banking of the curve,

Free body diagrams of cylindrical rollers - mechanics, Free body diagrams o...

Free body diagrams of cylindrical rollers: The t wo cylindrical rollers A and B which are identical, each having weight W are supported by an inclined plane and vertic

Critical euler axial compression stress, Determine the minimum critical Eul...

Determine the minimum critical Euler axial compression force,  Pcr and the minimum critical Euler axial compression stress, cru, for the column below which is pinned at the top and

Kinematics and dynamics of Machines, Please help me with this question if y...

Please help me with this question if you are 100 % sure that you will assure me a perfect grade. Please let me know as soon as possible. I need the solution within 18 hours from no

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