Engineering Mechanics

Proceedings Vol. 10 (2004)

ENGINEERING MECHANICS 2004

Copyright © 2004 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague

 

Vítek K., Doubrava K., Holý S., Kolman R., Mareš T., Španiel M.
pages 311 - +7p., full text

Principles of the current theories of the hole drilling method for evaluation of the residual stress were tested by the beams in bending. It was shown that considerable differences exist between the stress state estimated by the hole-drilling method and real stress state. 3D numerical models of the beams in bending and tension were created and the hole-drilling method was modelled. It was shown that the basic base function used in the current theory for definition of the radial strain around the drilled hole, is not able to describe the distribution of the stress accurately. Therefore new basis functions were suggested and tested. Using the new basic functions and new method for estimation of the residual stresses were defined and verified.

Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.