Hubungan Diameter Pasak, Lubang Sambungan Dan Ketebalan Plat Terhadap Distribusi Tegangan Sisa
Abstract: The discontinuities on
the structures or
members are often
to be encountered
such as, rivet and bolt holes as
well as notches. These discontinuities are agents for stress raiser and it can
initiate cracks in the vicinity of holes or in the notch roots. It is well
known that most of the fatigue failure is caused by cracks growth initiated
from the discontinuities. To reduce possibility the initiation
of crack in
those stress raisers,
the compressive residual stress, in
general, is imposed to the region
in which the stress concentrates. In the present study, using expansion hole technique
carried out by aid of
computer simulation, the effect
of mandrel diameter
and thickness of the blank to the residual stress in the vicinity of the
hole is investigated. The result shows that the magnitude of the residual
stress in the vicinity of the hole varies depending on the magnitude of the
expansion and the thickness of blank. In addition, in the certain distance from the
hole, the tensile
residual stress develops,
hence, it may
endanger a component because it causes the crack growth
rate increase, as consequent, the life time of a component is shorter.
Penulis: Ari Wahjudi, Anindito
Purnowidodo, Wijil Pambudi
Kode Jurnal: jptmesindd110178
