Directions: Consider the structure in Fig. 1. Determine all theinternal forces i
ID: 1821062 • Letter: D
Question
Directions: Consider the structure in Fig. 1. Determine all theinternal forces in all the members.
Provide axial force values for two-force members (specifywhether in tension or compression).
Provide axial, shear, and moment diagrams for the remainingmembers. The following directions
will assist you:
1. Solve the frame to obtain the forces acting at the supportsand between all the members:
(a) Determine which members are two force members.
(b) Calculate resultants for both distributed loads.
(c) Consider global equilibrium to determine the forces at A andF.
(d) Consider the top piece to solve for the remainingunknowns.
2. For each frame member (each member that is not atwo-force member):
(a) Draw a free body diagram (with the original distributed load- not the resultant). Draw
member ABCD horizontally with A at the left end.
(b) Draw axial force, shear, and moment diagrams - determine thevalues of all peaks.
3. State the force (both magnitude and direction) in alltwo-force members.
Explanation / Answer
At first u must remove the support from Points A &F. Then replace it by horizontal & vertical reactionforce. Then take moments about A point, to find out vertical reactionforce at F point. Then take moments about F point to find out vertical reactionforce at A point. Now move frame wise (one frame must be considered individually& its ends are replaced by reactions & moments) In this way u will be able to find out the shear force &bending moment equation. Now u can draw shear force & bending moment diagramframe wise.Related Questions
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