Structural Analysis-Truss Analysis
Two methods available for truss analysis: Method of joint – select a joint and identify the forces acting on it. Method of section – cut a sectio…
Showing posts from April, 2021Show all
Structural Analysis-Superposition
To ease the analysis of structure, principle of superposition is often used. It might be possible to break a complicated load case into several si…
Statically Determinate Structure Info Sheet
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Structural Analysis-Determinate Structure
For statically determinate planar structure, reactions are calculated using three equations of equilibrium: Sum of forces and reactions in x and y …
Structural Analysis-Stability
External stability of structure is established by support. It is essential to prevent the structure from moving. Lack of appropriate support agains…
Structural Analysis-Determinacy
For planar frame, three restraints i.e. translation (vertical and lateral) and rotation are needed to hold each element in place. For planar truss,…
Structural Analysis-Support
Structural elements need to be properly restrained/supported to ensure the load is effectively transferred to the structure’s base support - ground. …
Structural Analysis-Loading
In real life, the load may vary from time to time. It sometimes varies with location as well. Load pattern is idealized based on its nature, simpli…
Structural Analysis-Structure Types
Generally, structural elements consist of tie rod, beam and column. Tie rod is used to resist axial force while beam mainly resists bending and she…
Structural Dynamics Info Sheet
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Structural Dynamics-Holzer Method
Holzer’s method estimates natural frequency of MDOF system by assuming it behaves like SDOF. Using portal method, shear force developed in column i…
Structural Dynamics-Rayleigh Principle
Rayleigh’s principle estimates natural frequency of MDOF system under harmonic motion using principle of conservation of energy. No energy loss wil…
Structural Dynamics-Fundamental Period
For MDOF system, the first mode of vibration is the most critical. All mass components are moving in the same direction and therefore, the top of s…
Structural Dynamics-Control Systems
Natural frequency can be decreased by increasing mass, makes the structure a mass control system. Natural frequency can be increased by increasing …