The vibration of buildings due to earthquake or wind can be reduced by
hysteresis damping of structural members, and low yield point steel i
s one of the most efficient damping materials. One conventional mild s
teel, one modified mild steel, and two low yield point steels were low
-cycle fatigue tested. The following findings were obtained: (1) the l
ow-cycle fatigue strength (i.e., the relationship of strain to number
of cycles to failure) of the low yield point steels can be expressed b
y the Manson-Coffin equation; (2) the strain rate exerts a small effec
t on the low-cycle fatigue properties of the low yield point steels; (
3) the cumulative energy absorption capacity of the low yield point st
eels to failure varies from type to type (that of the mild steels;is s
uperior to that of the low yield point steels with strain amplitudes o
f larger than 0.8%); and (4) with strain amplitude of less than 0.7%,
the cumulative energy absorption capacity of the low yield point steel
s is much higher than that of the mild steels.