PROPERTIES OF STRUCTURAL STEEL
1. Physical properties Physical properties of structural steel, as detailed by cl.2.2.4.1 of IS 800:2007, irrespective of its grade may be taken as: a) Unit mass of steel, p =…
Collapse Mechanism
So for our previous beam, we know that we require two hinges for collapse (one more than its degree of redundancy), and we think that the hinges will occur under…
Shape Factor
Thus the ratio of elastic to plastic moment capacity is: This ratio is termed the shape factor,f, and is a property of across section alone. For a rectangular cross-section, we have:…
Statically indeterminate axial problems
In these analyses we used superposition often, knowing that for a linearly elastic structure it was valid. However, an elastic analysis does not give information about the loads that will…
Plastic Analysis of Steel Structures
Introduction to Plastic Analysis: Analysis of stress, deflection and distortion determinations within the limit of proportionality of the material of a structure have been satisfactorily made. Designs are also made…
Triangular Elements
Shape function using Cartesiancoordinates Higher Order Triangular Elements Higher order elements are useful if the boundary of the geometry is curve in nature. For curved case, higher order triangular element…
Plane Stress and Plane Strain
Plane Stress Analysis Fig. 1 shows the important facts about plane stress analysis. The structural region is assumed to lie in the 2D xy plane, with the third structural dimension…
Plastic analysis
In plastic analysis and design of a structure, the ultimate load of the structure as a whole is regarded as the design criterion. The term plastic has occurred due to…
Stiffness Method for One-Dimensional Truss Elements
We will look at the development of the matrix structural analysis method for the simple case of a structure made only out of truss elements that can only deform in…
Discretization
Discretization refers to the process of translating the material domain of an object-based model into an analytical model suitable for analysis. In structural analysis, discretization may involve either of two basic…
