5-Eng-2P04-B - Trusses and Frames Dieter Stolle, Professor...

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1 Trusses and Frames Dieter Stolle, Professor Department of Civil Engineering McMaster University Free-Body Diagrams (FBD) Examples - 1
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2 Free-Body Diagrams (FBD) Examples - 2 Pin-Jointed Plane Truss Members can only support axial load Forms rigid frame
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3 Equilibrium Statically Determinate: 2 rb n n j  For stability we require: 3 r n 23 b nj  Statically indeterminate, redundant bars: b  Unstable:
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4 Equilibrium Forces in the Members of a Pin-Jointed Truss
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5 Application of Newton’s Third Law Method of Joints Equilibrium at each joint analyzed systematically and independently
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6 Truss Breaking up the Problem Free Body Diagram Idealization Identifying Dispensable Members
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5-Eng-2P04-B - Trusses and Frames Dieter Stolle, Professor...

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