Modified Saint-Venant's Principe of the Problem of Curved Bars

The proof of
Saint-Venant's Principle for curved bars is discussed and the formulation of
Modified Saint-Venant's Principle of the problem is established. The study
shows that Saint-Venant's decay of stresses is valid only for the curved bars
which are “effectively infinite”. It is essential and significant to develop
mathematical theories of Modified Saint-Venant's Principle one by one if
Elasticity has to be constructed to be rational, logical，rigorous and secure mechanics.