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

Thermal stress, how did the formula derived smax = Ed1 a ?T/d 2

how did the formula derived smax = Ed1 a ?T/d 2

Composites , For an automotive component of your choice that is traditional...

For an automotive component of your choice that is traditionally metallic, review how it could be re-engineered as a composite? How factors such as fibre & matrix type, fibre volum

TTT of effective normalizing of Ductile tiron, At 1500 degrees F, how much ...

At 1500 degrees F, how much time is required to effectively normalize ductile iron

Describe the types of wear, (a) Describe the types of wear and causes of we...

(a) Describe the types of wear and causes of wear. Draw figures whenever necessary. (b) Describe any 4 cutting tool materials in detail. (c) Describe the various reasons for

Explain the concept of time dilation, Explain the concept of time dilation....

Explain the concept of time dilation. Describe experimental verification of time dilation. Explain: (i) Length contraction (ii) Time Dilation in STR What are proper length an

Planimeter, procedure for measuring area of square by planimeter

procedure for measuring area of square by planimeter

Head pump, the pump, shown in the figure, is used to deliver water to a dis...

the pump, shown in the figure, is used to deliver water to a distribution system. there is no flow to or from reservoir A, but it is used to damp pressure and protect the pump. th

Dynamics of the water tank, A Perspex tank ure 1), which has parallel sides...

A Perspex tank ure 1), which has parallel sides for the top part of its height and a 'V' shaped section for the bottom part and a constant width throughout, is used as a receptacle

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