This book is one of the best book of structural analysis for I.E.S. preparationFull description
This book is one of the best book of structural analysis for I.E.S. preparation
One of test in Structure Laboratory.....
This book is one of the best book of structural analysis for I.E.S. preparationDescripción completa
One of test in Structure Laboratory.....
Descripción completa
Descripción completa
Deskripsi lengkap
Full description
force
Full description
Full description
qwe
Full description
Full description
force in statically determinate truss
Full description
Full description
ADVANTAGES 1. SMALLER STRESSES
ADVANTAGES 2. GREATER STIFFNESSES
ADVANTAGES 3. REDUNDANCIES
ADVANTAGES 3. REDUNDANCIES
DISADVANTAGES 1. STRESSES DUE TO SUPPORT SETTLEMENTS
DISADVANTAGES 2. STRESSES DUE TO TEMPERATURE CHANGES AND FABRICATED ERRORS
ANALYSIS OF INDETERMINATE STRUCTURES FUNDAMENTAL RELATIONSHIPS
Equilibrium equations
Compatibility conditions
Member force-deformation relations
METHOD OF ANALYSIS
FORCE (FLEXIBILITY) METHODS
DISPLACEMENT (STIFFNESS) METHODS
FORCE METHOD
Small structures with few redundants
Used to derive the member force-deformation relations to develop the displacement method
DISPLACEMENT METHOD
More systematic
Can be easily implemented on computers
METHOD OF CONSISTENT DEFORMATIONS- FORCE METHOD
James C. Maxwell in 1864 Involves removing enough restraints from the indeterminate structures to render it statically determinate. Primary structure-determinate structure, which must be statically stable Redundant restraints-excess restraints removed from the given indeterminate structure to convert it to the determinate primary structure.
PROCEDURE FOR ANALYSIS
Determine the degree of indeterminacy of the given structure. (n not greater than 1)
Select one of the support reactions as redundant.
Remove the restraint corresponding to the redundant from the given indeterminate structure to obtain the primary determinate structure.
PROCEDURE FOR ANALYSIS
a. draw a diagram of the primary structure with only the external loading applied to it. b. draw a diagram of the primary structure with only the unit value of the redundant applied to it. Write the compatibility equation by setting the algebraic sum of the deflection of the primary structure at the location of the redundant due to the external loading and the equal to the given displacement (or rotation) of the redundant support of the actual indeterminate structure. (the algebraic sum of deflections due to the external loading and the redundant can be simply set equal to zero ). Compute the deflection of the primary structure at the location of the redundant due to the external loading and due to the unit value of the redundant.
PROCEDURE FOR ANALYSIS
Substitute the values of deflections (slopes) computed in step 6 into the compatibility equation, and solve for the unknown redundant.
Determine the remaining support reactions of the indeterminate structure either by applying the three equilibrium equations to the free body of the indeterminate structure or by superposition of the reactions of the primary structure due to external loading and due to the redundant.
PROCEDURE FOR ANALYSIS
Once the reactions have been evaluated, the other response characteristics of the indeterminate structure can be determined. Either through equilibrium or by superposition of the responses of the primary structure due to external loading and due to the redundant.
