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Strength / Mechanics of Material Basics, General Equations and Definitions

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Fastener, Bolt Torque Installation Design


  • Local Stress-Strain Fatigue Method ( ε-N ) Although most engineering structures and machine components are designed such that the nominal stress remains elastic (Sn < σys) stress concentrations often cause plastic strains to develop in the vicinity of notches where the stress is elevated due to the stress concentration effect.
  • Stress Concentration Factors for Flat Plates and Cylinders : In a structure or machine part having a notch or any abrupt change in cross section, the maximum stress will occur at this location and will be greater than the stress calculated by elementary formulas based upon simplified assumptions as to the stress distribution.


Material Specifications and Characteristics - Ferrous and Non-Ferrous


Pinned Columns and Buckling


Machine Design

Misc Analysis