The sanding-drum mandrel shown in the figure is made for use with a hand drilI. The mandrel is made from a rubber-like material that expands when the nut is tightened to secure the sanding sleeve placed over the outside surface. If the diameter D of the mandrel increases from 1.50 in. to 1.60 in. as the nut is tightened, determine (a) the average normal strain along a diameter of the mandrel. (b) the circumferential strain at the outside surface of the mandrel.

The sanding-drum mandrel shown in the figure is made for use with a hand drilI. The mandrel is made from a rubber-like material that expands when the nut is tightened to secure the sanding sleeve placed over the outside surface. If the diameter D of the mandrel increases from 1.50 in. to 1.60 in. as the nut is tightened, determine (a) the average normal strain along a diameter of the mandrel. (b) the circumferential strain at the outside surface of the mandrel.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The sanding-drum mandrel shown in the figure is made for use with a hand drill. The mandrel is made from a rubber-like material that
expands when the nut is tightened to secure the sanding sleeve placed over the outside surface. If the diameter D of the mandrel
increases from 1.50 in. to 1.60 in. as the nut is tightened, determine
(a) the average normal strain along a diameter of the mandrel.
(b) the circumferential strain at the outside surface of the mandrel.
Sanding sleeve
Mandrel
Answers:
(a) ED =
in./in.
(b) Ес
in./in.

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