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quiz_hdot_m11_14

# quiz_hdot_m11_14 - MATERIALS AND STRUCTURES QUIZ FORMULA...

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MATERIALS AND STRUCTURES QUIZ FORMULA AND FACT SHEET Three Great Principles : Equilibrium, Compatibility, Constitutive Relations Two Pretty Good Principles: Superposition and Symmetry ( ) Equilibrium: F ( i ) = 0 M ( i ) + r ( i ) F i = 0 F = force vector, r = position vector of point on line of action of the force, M = moment vector. Structural Analysis: Usually consists of four steps: 1) Idealization of a physical reality to a simpler, idealized model (i.e. a truss with idealized support conditions) 2) Replacement of boundary conditions (pin, roller, clamp, frictional slider) by equipollent forces and moments 3) Calculation of support reactions - usually using a free body diagram 4) Calculate internal forces (stresses) and displacements (strains) Idealized supports: H V V H H M Pin Jointed Trusses - Idealizing assumptions 1. All bars are straight 2. Bar joints are frictionless pins 3. Bars are massless and perfectly rigid (for loading analysis) 4. All loads and reactions are applied at the joints.

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quiz_hdot_m11_14 - MATERIALS AND STRUCTURES QUIZ FORMULA...

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