The uniform stress condition pictured in Fig. 1-2d exists throughout
7 U9 u) s" E' {the length of the bar except near the ends. The stress distribution at the. g9 m2 r/ h, L$ J% z3 H
end of a bar depends upon how the load P is transmitted to the bar. If the$ j/ C5 I" l& X. N! @
load happens to be distributed uniformly over the end, then the stress5 W0 b5 N2 s* y B
pattern at the end will be the same as everywhere else. However, it is" }3 p5 y) C) U
more likely that the load is transmitted through a pin or a bolt, producing) c, K$ _9 y# |& C$ v
high localized stresses called stress concentrations.
4 u. b2 K# H3 |2 V0 I$ t( ?& p8 r2 {
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