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Which of the following principles states that 'the stresses always tend to concentrate in the immediate vicinity of the load and become uniform at sections farther off from the load ?

Which of the following principles states that 'the stresses always tend to concentrate in the immediate vicinity of the load and become uniform at sections farther off from the load ? Correct Answer Saint Venant's Principle

Explanation:

Saint Venant's Principle: 

  • According to this famous principle, force distribution across any section of the body is independent of the mode of application of equivalent force away from the point of application of the force.
  • The manner of application has only effect in the vicinity of the force. This principle facilitates the writing of boundary conditions.
  • This principle consciously or unconsciously is always applied in mathematical modelling.
  • To illustrate the principle, let us consider the popular experiment (tension test) where a cylindrical bar is stretched from its two ends through a grip. According to this principle, the manner in which force is applied does not affect the force distribution away from the end. The applied force on the bar can therefore be idealized as uniform over cross-section through force is transferred from circumferential tractions. It has been found that the traction on the cross-section away from the end is P/A.

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