A rubber ball (see figure) is inflated to a pressureof 65 kPa. At that pressure, the diameter of theball is 240 mm and the wall thickness is 1.25 mm. Therubber has a modulus of elasticity E = 3.7 MPa andPoisson’s ratio v = 0.48.(a) Determine the maximum stress and strain inthe ball.(b) If the strain must be limited to 0.425, find theminimum required wall thickness of the ball.
A rubber ball (see figure) is inflated to a pressureof 65 kPa. At that pressure, the diameter of theball is 240 mm and the wall thickness is 1.25 mm. Therubber has a modulus of elasticity E = 3.7 MPa andPoisson’s ratio v = 0.48.(a) Determine the maximum stress and strain inthe ball.(b) If the strain must be limited to 0.425, find theminimum required wall thickness of the ball.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
A rubber ball (see figure) is inflated to a pressure
of 65 kPa. At that pressure, the diameter of the
ball is 240 mm and the wall thickness is 1.25 mm. The
rubber has a modulus of elasticity E = 3.7 MPa and
Poisson’s ratio v = 0.48.
(a) Determine the maximum stress and strain in
the ball.
(b) If the strain must be limited to 0.425, find the
minimum required wall thickness of the ball.
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