Q1. The stress-strain diagram for a bone is shown, and can be described by the equation 0.45 (106) + 0.36 (1012), where is in kPa. Determine the yield strength assuming a 0.2% offset Hint: calculate the slope at =0 first Q2. Direct tension indicators are sometimes used instead of torque wrenches to ensure that a bolt has a prescribed tension when used for connections. If a nut on the bolt is tightened so that the six 3-mm high heads of the indicator are strained 0.1 mm/mm, and leave a contact area on each head of 1.5 mm, determine the tension in the bolt shank. The material has the stress-strain diagram shown. Q3. The 2014-16 aluminium rod has a diameter of 30 mm and supports the load shown. Determine the displacement of end A with respect to end E. Neglect the size of the couplings Q4. The rigid bar is supported by the pin-connected rod CB that has a cross-sectional area of 14 mm and is made from 6061-T6 aluminum. Determine the vertical deflection of the bar at D when the distributed load is applied. Modulus of Elasticity: 68.9GPa -0.45(10) + 0.36(10-12) (MPa) 3 mm 600 450 'P e (mm/mm) 0.0015 0.3 8 kN 4 kN 6 kN 2 kN 4 m 2 m- 2 m -2m 1.5m 300 N/m D B -2 m 2 m-