Thin Cylinder

A rubber ball is inflated to a pressure of 80 kPa. At that pressure the diameter of the ball is 208 mm and the wall thickness is 1.2 mm. The rubber has a modulus of elasticity E=3.5 MPa and Poisson’s ratio ν= 0.45. Determine the maximum stress in the ball.

• 3.467 Mpa

• 3.657 Mpa

• 3.746 Mpa

• 3.576 Mpa

What must be the wall thickness of a thin cylindrical vessel of diameter 1m if it is to withstand an internal pressure of 70 bar (7 MN/m²) and the hoop stresses are limited to 270 MN/m²

• 12.96 m

• 12.96 cm

• 1.296 mm

• 12.96 mm

A cylinder has an internal diameter of 230 mm, has walls 5 mm thick and is 1 m long. It is found to change in internal volume by 12.0 x 10^-6 m3 when filled with a liquid at a pressure p. If E= 200 GPa and v = 0.25, and assuming rigid end plates, determine the value of hoop stress

• 28.8 GN/m²

• 28.8 MN/m²

• 28.8 kN/m²

• 28.8 N/m²

A steel cylinder 1m long of 150 mm internal diameter and plate thickness 5 mm is subjected to an internal pressure of 70 bar (70 MN/m²); the increase in volume owing to the pressure is 16.8x10^-6 m³. Find the values of Poisson’s ratio

• 0.3

• 0.28

• 0.25

• 0.299

A spherical gas container made of steel has a 6 m outer diameter and a wall thickness of 9 mm. Knowing that the internal pressure is 500 kPa, determine the maximum normal stress in the container

• 83.1 GPa

• 83.1 kPa

• 83.1 MPa

• 83.1 Pa

Circumferential stress also known as

Determine the normal stress in a basketball of 240 mm diameter and 3 mm wall thickness that is inflated to a gage pressure of 62 kPa

• 1.2 GPa

• 1.0 MPa

• 1.2 KPa

• 1.2 MPa

What is the symbol for the hoop stress

Choose the type of thin walled pressure that cover in your syllabus

Give the best answer to describe about stress in spherical vessel?