Differenciate between force method and displacement method of analysis
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Difference between force and displacement method are:-
Force Method:-
1. Assumed Force as Unknown
2. Preferable when structure has less static Indeterminacy.
3. Known as Flexibility Method. eg. Consistent Method of Deformations.
Displacement Method:-
Assumed Displacement as Unknown
Preferable when structure has less Kinematic Indeterminacy.
Known as Stiffness Method. e.g. Slope Displacement Method and Moment Distribution Method.
In case of Both ended Fixed Support, Static Indeterminacy = 6–3 = 3, while Kinematic Indeterminacy = 0. So, better to start the calculation from Moment Distribution Method.
Globally Displacement based analysis of structure is easy and used more.
Force Method:-
1. Assumed Force as Unknown
2. Preferable when structure has less static Indeterminacy.
3. Known as Flexibility Method. eg. Consistent Method of Deformations.
Displacement Method:-
Assumed Displacement as Unknown
Preferable when structure has less Kinematic Indeterminacy.
Known as Stiffness Method. e.g. Slope Displacement Method and Moment Distribution Method.
In case of Both ended Fixed Support, Static Indeterminacy = 6–3 = 3, while Kinematic Indeterminacy = 0. So, better to start the calculation from Moment Distribution Method.
Globally Displacement based analysis of structure is easy and used more.
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