Berczyński, Stefan; Grochała, Daniel; Grządziel, Zenon
(Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie,
)
This article describes distributions of stresses and strains created by pressing a ball with 80 HRC hardness
into soft 35HRC steel, which occurs in the technological process of burnishing. We present a computer model
and a solution developed with the Nastran FX program, based on the finite elements method. The validity of
the model has been checked using a small force applied on the ball, within the range of elastic deformations,
where Hertz formulas are applicable. Then computations have been made for a pressure force of 30 000 N,
which corresponds to hardness testing conditions by the Brinell method. The dimensions of plastic
indentations from simulations and experiments are compared.