CIVL 306
Civil Engineering Materials
HW#1
Problem 1.1
Given: A tensile load of 100,000 lb is applied to a metal bar with a 1.0 X 1.0 cross-section and a gauge
length of 2. Under this load, the bar elastically deforms so that the gauge length increases to
Problem 1
Given: A nonlinear material has the stress-strain relationship shown below.
= 50(1 1000 )
()
()
Required: Determine
a) The tangent modulus at a stress of 35 ksi
b) The chord modulus between a stress of 30 ksi and 40 ksi
50
Stress (ksi)
40
30
20