Description
The Strength of Materials (SOM) section of the GATE exam for Mechanical Engineering in 2026 will likely cover topics like stress and strain analysis, elasticity and plasticity, shear force and bending moment diagrams, deflection of beams, and torsion of shafts. The exam will probably include both theoretical and numerical questions, requiring students to demonstrate both conceptual understanding and problem-solving skills.
Here’s a more detailed breakdown:
Key Topics:
- Stress and Strain:Understanding different types of stresses (tensile, compressive, shear) and strains (normal, shear), and their relationships.
- Elastic Constants:Young’s modulus, Poisson’s ratio, bulk modulus, and their significance.
- Mohr’s Circle:Analyzing plane stress and plane strain conditions using Mohr’s circle.
- Thin Cylinders:Understanding the stresses and strains in thin-walled cylinders subjected to internal pressure.
- Shear Force and Bending Moment Diagrams:Constructing these diagrams for various loading conditions on beams.
- Bending and Shear Stresses:Analyzing stresses in beams due to bending and shear forces.
- Shear Center:Understanding the concept of shear center and its importance in beam design.
- Deflection of Beams:Calculating beam deflections using various methods.
- Torsion of Circular Shafts:Analyzing stresses and deformations in circular shafts subjected to torsion.
- Euler’s Theory of Columns:Understanding column buckling and its critical load.
- Energy Methods:Applying energy principles to solve structural problems.
- Thermal Stresses:Analyzing stresses induced by temperature changes.
- Strain Gauges and Rosettes:Understanding the principles and applications of strain measurement.
Material Testing: Knowledge of testing methods for determining material properties like tensile strength, hardness, and impact strength.