In the moment distribution method, every joint of the structure to be analysed is fixed so as to develop the fixed-end moments. Then each fixed joint is sequentially released and the fixed-end moments (which by the time of release are not in equilibrium) are distributed to adjacent members until equilibrium is achieved. The moment distribution [...]

Having set up the basics for studying equilibrium of bodies, we are now ready to discuss the trusses that are used in making stable load-bearing structures. The examples of these are the sides of the bridges or tall TV towers or towers that carry electricity wires. Schematic diagram of a structure on the side of [...]

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The airframe of a fixed-wing aircraft consists of the following five major units:

Fuselage
Wings
Stabilizers
Flight controls surfaces
Landing gear

A rotary-wing aircraft consists of the following four major units:

Fuselage
Landing gear
Main rotor assembly
Tail rotor assembly

The primary factors to consider in aircraft structures are strength, weight, and reliability. These factors determine the requirements to be met by any material used [...]

First moment
Forces are distributed continuously over an area on which they act, it is often necessary to calculate the moment of theses forces about an axis

Second moment

The intensity of the force (pressure or stress) is proportional to the distance of the line of action of the force from the moment axis
Also called Area moment [...]

Beams are long and slender structural elements, differing from truss elements in that they are called on to support transverse as well as axial loads. Their attachment points can also be more complicated than those of truss elements: they may be bolted or welded together, so the attachments can transmit bending moments or transverse forces [...]

Deflection of beams with various support and load conditions with various methods is explained. All the methods are explained with examples. Analysis of struts is also explained.Download the complete file

A steel-concrete composite column is a compression member, comprising either a concrete encased hot-rolled steel section or a concrete filled tubular section of hot-rolled steel and is generally used as a load-bearing member in a composite framed structure. Typical cross-sections of composite columns with fully and partially concrete encased steel sections are illustrated using figures [...]

The stiffness method of analysis is the basis of all commercial structural analysis programs. The focus of this tutorial is development of these equations that only take into account bending deformations, i.e., ignore axial member deformations. Within the assumptions, the stiffness method for beam and frame structures is “exact”.
In the stiffness method of analysis, we [...]

Large-capacity ground-supported cylindrical tanks are used to store a variety of liquids, e.g. water for drinking and fire fighting, petroleum, chemicals,and liquefied natural gas. Satisfactory performance of tanks during strong ground shaking is crucial for modern facilities. Tanks that were inadequately designed or detailed have suffered extensive damage during past earthquakes.Earthquake damage to steel storage [...]

Hello friend, how you doing? Well let me tell you about Matrix method of structural analysis.This method is based on the elastic theory, where it can be assumed that most structures behave like complex elastic springs, the load-displacement relationship of which is linear. Obviously, the analysis of such complex springs is extremely difficult, but if [...]

The deflection and slope in a cantilever beam is shown for the various load conditions. These deflection and slope formulas can be directly used in the analysis and the design of cantilever beams. Here “delta” shows the deflection and “theta” is the slope. Both the deflection and and slope criteria is used in the design. [...]

In materials science, the strength of a material refers to the material’s ability to resist an applied force. Mechanics of materials is studied with objective of good analysis and design of structures. Properties of the materials should be first studied for good design.
Here is some lecture notes on mechanics of materials.

Beams – structural members [...]

Structural modeling and analysis By Clive L. Dym

Structural Analysis By Aslam Kassimali