The uniform stress condition pictured in Fig. 1-2d exists throughout
2 Q. ?' F# ^/ a" }( U& w7 cthe length of the bar except near the ends. The stress distribution at the5 t/ u( z N" |- v" b6 R; l
end of a bar depends upon how the load P is transmitted to the bar. If the/ D0 q+ Z4 q. E0 X
load happens to be distributed uniformly over the end, then the stress
( q2 @, [: V: S2 fpattern at the end will be the same as everywhere else. However, it is6 Y0 a: ~! ~: T8 T& J1 w K
more likely that the load is transmitted through a pin or a bolt, producing! w* F; R0 b, k' Z& [: G d, ~
high localized stresses called stress concentrations.
/ Z6 G; ? y/ p& |: O. }2 m5 ^5 I5 B, }- P; j5 |- s
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