A steel bar, 300 mm long and 24 mm diameter, is turned down to 18 mm diameter for one third of its length. It is heated 30°C above room temperature, clamped at both end and then allowed to cool to room temperature. If the distance between the clamps is unchanged, the maximum stress in the bar (a = 12.5x10-6 per °C & E=200GN/m²is)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A steel bar, 300 mm long and 24 mm diameter,
is turned down to 18 mm diameter for one third
of its length. It is heated 30°C above room
temperature, clamped at both end and then
allowed to cool to room temperature. If the distance
between the clamps is unchanged, the maximum
stress in the bar
(α = 12.5x10-6 per °C & E=200GN/m² is)
Transcribed Image Text:A steel bar, 300 mm long and 24 mm diameter, is turned down to 18 mm diameter for one third of its length. It is heated 30°C above room temperature, clamped at both end and then allowed to cool to room temperature. If the distance between the clamps is unchanged, the maximum stress in the bar (α = 12.5x10-6 per °C & E=200GN/m² is)
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