Answer the following questions concisely (no more than half a page per question): a What do you understand by strength, stiffness and stability in the Mechanics of Solids context? b Identify, sketch and explain how to calculate all possible failure modes of a bicycle chain (for the link plates and the pin). c What is/are the difference(s) between von Mises (Maximum Distortion Energy) and Tresca (Maximum Shear Stress) failure criteria?

Considering Figure 20-8 (textbook), the torsion geometry parameter, Jw, for case 2 when b=6 and d=9 is most likely:     400.5     562.5     283.5     60.8     279.0     392.6     386.0     572.6     184.1

1. For the stress-strain curve shown below, please estimate the properties indicated. (a) Fracture Strain Please do your work on a separate sheet of paper, and put your answers in the boxes on the right. Be sure to include the proper symbol and units. Stress Strain 70 60 50 Stress (ksi) 240 30 20 10 70 0 0.000 60 50 Stress (ksi) 40 20 10 KULL 0 0.000 0.010 0.050 0.100 Strain (in/in) Stress Strain 0.020 0.030 Strain (in/in) 0.040 0.150 0.050 (b) Ultimate Tensile Stress (c) Fracture Stress (d) Proportional Limit (e) Elastic Modulus (1) Yield Stress (g) Tensile Toughness (Modulus of Toughness) (h) Modulus of Resilience

al stress and between which two pulleys does it occur and (6) take G = 80 GP. gle of rotation of pulley E relative to pulley A. %3D d = 100 d = 75 d = 75 d = 25 TA TB T Tc TD TE 1500 1000 1000 2000 Fro 0(All dimensions are in mm) Tp = 660 N.m, tad Tc = 275 N.m, TE = 110 N.m, %3D %3D anstugaa doe9 rebianos lleda aW TB 880 N.m, TA = 55 N.m %3D