Determine the maximum pressure applied inside the shell, Mechanical Engineering

Assignment Help:

Determine the maximum pressure applied inside the shell:

A thin spherical shell of 1.5 m diameter is built by joining steel plates of 8 mm thickness by riveting. The efficiency of joint is given to be 75%. Determine the maximum pressure that may be applied inside the shell. Take permissible tensile stress as 140 N/mm2.

The efficiency of the joints influences the stresses induced. For a seamless shell, that means a shell having not joints, efficiency is 100%. For decreased efficiency, stresses are enhanced. Therefore, if η is the efficiency of the joints in the shell, then the hoop stress is provided by σh  = pd/4t η

Solution

In this example, this is given

Diameter, d = 1.5 m = 1500 mm.

Thickness, t = 8 mm.

Permissible hoop stress = 140 N/mm2.

Efficiency = 75% = 0.75.

 Therefore, we have

140 = p × 1500 / 4 × 8 × 0.75

∴ p = 2.24 N/mm2


Related Discussions:- Determine the maximum pressure applied inside the shell

Determine the largest value of force, Do not round intermediate calculation...

Do not round intermediate calculations; however for display purposes report intermediate steps rounded to four significant figures. Give your final answer(s) to three significant f

Beam, calculate the vertical reaction at A in Newtons

calculate the vertical reaction at A in Newtons

Describe the elements of polyhedral objects, Describe the Elements of Polyh...

Describe the Elements of Polyhedral objects Objects that are often encountered in engineering applications can be classified as either polyhedral or curved objects. A polyhedr

Bending stress in curved beams, aframe of punching machine and its varios d...

aframe of punching machine and its varios dimentions. if it has force of85kN determine others

Motion of two bodies - rough surface and rough pulley, Motion of two bodies...

Motion of two bodies - rough surface and rough pulley: THE HORIZONTAL SURFACE IS ROUGH AND THE STRING IS PASSING OVER ROUGH PULLEY. Figure shows two weights W 1 and W 2 c

Thermodynamics, microscopic and macroscopic view points

microscopic and macroscopic view points

Calculate the safe load using eulers formula, A 1.5m long column has circul...

A 1.5m long column has circular cross-section of 5cm diameter. One of the end of the column is fixed in the position and direction and other end is free. Taking factor of safety as

Cylinder - part of combustion engine, Cylinder - Part of combustion engine:...

Cylinder - Part of combustion engine: Cylinder: It provides cylindrical closed space to allow movement of piston and to admit charge. It is made up of grey cast iron or i

#title.wedge friction, explain wedge friction?with simple example? solve an...

explain wedge friction?with simple example? solve any simple problem in wedge friction

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