The uniform stress condition pictured in Fig. 1-2d exists throughout
6 D9 H( Z7 W7 t( [the length of the bar except near the ends. The stress distribution at the Q; B( [! ^! M/ q1 W
end of a bar depends upon how the load P is transmitted to the bar. If the! m6 w$ R' j9 y$ W
load happens to be distributed uniformly over the end, then the stress
, g; h7 i7 `+ c1 L- S# B" X3 kpattern at the end will be the same as everywhere else. However, it is# J+ @1 M5 a$ V+ I( j9 j% h+ V
more likely that the load is transmitted through a pin or a bolt, producing
) W: h+ |$ U3 u3 B; mhigh localized stresses called stress concentrations.: V6 v+ B2 {7 h* ~3 _/ \
. D6 I% l2 R: S) m" O/ A4 { |