Page 1 of 2 HW5.doc 2/4/12

CEE220 Homework #5 Due on Monday, Feb. 13th. Please note that these topics will be covered on Quiz 2, Thursday, Feb. 16th.

Problem 1. [10-38 in the text]. Determine the bulk modulus for each of the following materials:

(a) rubber, Er = 0.4 ksi;! r = 0.48. (b) glass, Eg = 8(10

3)ksi,!g = 0.24.

Problem 2. [10-39 in the text]. The principal strains at a point on the aluminum fuselage of a jet aircraft are !1 = 780(10

!6 )!2 = 400(10

!6 ).

Determine the associated principal stresses at the point in the same plane. Eal =10(10

3)ksi,!al = 0.33. Problem 3.

Page 2 of 2 HW5.doc 2/4/12

Problem 4.

Problem 5.