experimental and numerical modeling of buckling instability of laser sheet forming
DESCRIPTION
EXPERIMENTAL AND NUMERICAL MODELING OF BUCKLING INSTABILITY OF LASER SHEET FORMING. Authors: Z. Hu , R. Kovacevic , M. Labudovic RICH DEWEY Sept. 21, 2009. Introduction: Function of Paper. To discuss the buckling instability that can happen when laser bending sheet metal. - PowerPoint PPT PresentationTRANSCRIPT
EXPERIMENTAL AND NUMERICAL MODELING OF BUCKLING INSTABILITY
OF LASER SHEET FORMINGAuthors: Z. Hu , R. Kovacevic , M. Labudovic
RICH DEWEYSept. 21, 2009
Introduction: Function of PaperTo discuss the buckling instability that can
happen when laser bending sheet metal.
Present data from a series of experiments and compare them to data from 3-D FEM(finite element modeling) simulation.
Introduction: Why Important?Laser bending of sheet metal is becoming
very proper in precision manufacturing.
Over 25 different variables have been identified that impact the end result, making computer simulation very difficult.
Author selects a very specific method of laser bending and is able to produce similar results with his simulation.
Conclusions:“A 3-D FEM simulation system has been
developed that includes a nonlinear transient indirect coupled thermal-structural analysis accounting for geometric and material nonlinearities. The buckling deformation, the bending angle, the distribution of stress-strain, the temperature, and residual stress can all be obtained by computer simulation.”
Conclusions:Practical Industrial use?
Model not flexible enough to be used in a variety of situations
Technical advancement?Helpful, step in the right direction
Industries most impacted?Any high presicion sheet metal forming or
bending, most electronics manufacturers.