Question

Q4. With reference to figure below; write about the type of load acting on the lever rod. What type of stress will be developed in the 2 components shown and where will the failure

Q4. With reference to figure below; write about the type of load acting on the lever rod. What type of stress will be developed in the 2 components shown and where will the failure occur first? [1] LEVER Bolt

Answer 1

Solution : : - FBD of levett siod, м} . L !A fevert 3104 :-→ Since' bevor blod is being constrained by bolt to have movement along x&g axes, there will steadion zeices at A om 1od along X-R Y axes. -> Since devet stod cant stotate about z-axis, there will be some bending moment of A. > F=o → te=) 03. Mardiso MATEd =0 → MA = Ed → FBD of bolt :- > Bett will expotience loto · both nalmal & shear stress threads due to Ry > But threading portion will also expofionce

bonding stress due to bending moment M = Fd. The threaded portion of bott is more sensitye to bonding p shealing action and so gailwie will occur at threaded portion mly.