Machine Design Topics - GATE ME Syllabus

1

Design for static and dynamic loading

Factor of safety under different loadings.

1m4/10

📌 Key FormulaFS = S_y / σ_max

2

Failure theories

Maximum principal stress, strain, shear, distortion energy.

2m4/10

📌 Key FormulaVon Mises: √((σ1-σ2)² + ...)/√2 = S_y

3

Fatigue strength

Strength under cyclic loading.

1m4/10

📌 Key FormulaModified Goodman, Soderberg

4

SN diagram

Stress vs number of cycles curve.

1m3/10

📌 Key FormulaBasquin equation for high cycle

5

Principles of the design of machine elements such as bolted, riveted and welded joints

Strength calculation for permanent and temporary joints.

2m4/10

📌 Key FormulaBolt strength, weld throat

6

Principles of the design of shafts

Shaft sizing under combined bending and torsion.

1m4/10

📌 Key FormulaASME code: d³ = (16/πτ) √((K_b M_b)² + (K_t M_t)²)

7

Principles of the design of gears

Lewis beam strength, Buckingham dynamic load.

1m4/10

📌 Key FormulaLewis: Wt = σ_b b m y

8

Principles of the design of rolling and sliding contact bearings

Life calculation, selection from catalog.

1m3/10

📌 Key FormulaL10 = (C/P)^3 * 10^6 revolutions

9

Principles of the design of brakes and clutches

Torque capacity, heat dissipation.

1m4/10

📌 Key FormulaT = μ W r_mean * n

10

Principles of the design of springs

Helical compression, torsion springs.

1m3/10

📌 Key Formulaδ = 8 P D³ n / (G d^4)