Bearing Stress. Bolts, rivets, and pinscreate stresses on thepoints of contact orbearing surfaces of thedmembers they connect.. The resultant of the forcedistribution on the surfaceis equal and opposite to theforce exerted on the pin: Corresponding averageforce intensity is calledthe bearing stress,PPohtdA6
Bearing Stress • Bolts, rivets, and pins create stresses on the points of contact or bearing surfaces of the members they connect. t d P A P b • Corresponding average force intensity is called the bearing stress, • The resultant of the force distribution on the surface is equal and opposite to the force exerted on the pin. 6
Stress Analysis & Design Exampled=25mm: Would like to determinethe stresses in the20mmFlat endTOPVIEWOFRODBCmembers and connectionsof the structure shown40 mmd=20mm: From a statics analysis:d=20mm25mmFAB= 40 kN600mmFRONTVIEW(compression)FBc = 50 kN (tension)Flat end50mm. Must consider maximumnormal stresses in AB and800mmQ=30kNQ=30kNBC, and the shearingENDVIEW125mm120mmstress and bearing stress30mmT20mm25mmat each pinned connectionBTOPVIEWOFBOOMAB7d=25mm
• Would like to determine the stresses in the members and connections of the structure shown. Stress Analysis & Design Example • Must consider maximum normal stresses in AB and BC, and the shearing stress and bearing stress at each pinned connection • From a statics analysis: FAB = 40 kN (compression) FBC = 50 kN (tension) 7