Learning Forum

[2198215399]

For *CONTACT_TIEBREAK_SURFACE_TO_SURFACE what is the formula for the bond between the two in this contact algorithm?

[Pedram Samadian]

Hi,

The *CONTACT_TIEBREAK_SURFACE_TO_SURFACE keyword in LS-DYNA lets you define a bond between two surfaces, which can break under certain conditions and turn into a regular sliding contact after failure. This uses penalty-based contact formulations. In this contact algorithm, the bond between surfaces fails when:

NFLS = Tensile failure stress

SFLS = Shear failure stress

= Applied normal stress

= Applied shear stress

For further information, please check the contact section in the LS-DYNA User Manual Vol. 1 (LSDYNA Manuals).

I hope this answers your question.

Thanks,

Pedram