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

Compute the ratio of the torque, Compute the ratio of the torque: Comp...

Compute the ratio of the torque: Compute the ratio of the torque transmitted by a hollow & a solid shaft of the similar material, length & weight. Solution d i = inte

Working of a four-stroke engine , Working of a Four-stroke Engine: To unde...

Working of a Four-stroke Engine: To understand the working of a four-stroke motorcycle engine, the whole operation can be divided into four parts, known as strokes. The strokes ar

Atomic hydrogen welding, Atomic Hydrogen Welding In this process, an a...

Atomic Hydrogen Welding In this process, an arc is struck between two tungsten electrodes using AC power supply.The Streams of hydrogen gas are passed from orifices around the

Calculate plastic zone - fatigue crack propagation mechanism, Calculate pla...

Calculate plastic zone: Calculate plastic zone ahead of crack in above problem if σY = 250 MPa. Solution From Eq. Here KI is taken as KI max since the plastic

Mp, one point cutting tool

one point cutting tool

Define spot welding electrodes, Q. Define spot welding electrodes • ...

Q. Define spot welding electrodes • To conduct the welding current to the work pieces. • To transmit to the work pieces in the weld area the amount of force needed to pro

What are the elements of theory of vibrations, What are the Elements of The...

What are the Elements of Theory of Vibrations All bodies possessing mass and elasticity can vibrate or undergo vibratory motion. Let us understand a few basic definitions used

Determine the centroid of the truss gusset plate, Determine the centroid of...

Determine the centroid of the truss Gusset Plate shown in figure below.

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