The uniform stress condition pictured in Fig. 1-2d exists throughout
4 y: l, C# |0 W" o/ ythe length of the bar except near the ends. The stress distribution at the
O5 X" |& S: Q: H ]end of a bar depends upon how the load P is transmitted to the bar. If the d! `6 w; l# a. d, q& P
load happens to be distributed uniformly over the end, then the stress& ]7 M8 _3 k- {# R. E0 g2 [. z7 J
pattern at the end will be the same as everywhere else. However, it is' Q2 a X; D( J; a# K
more likely that the load is transmitted through a pin or a bolt, producing" q( c! _) s+ o/ {6 E: J- ?
high localized stresses called stress concentrations.
h. U: P+ q4 ~" ?3 T9 J5 ^9 |
# ], e+ \: T8 j* I |