Dear Anne-Cecile, If you do not apply any boundary condition to this surface, it will by definition be traction free. You do not need to do anything.
The correct condition mathematically is not "sigma = 0" but "sigma*Normal = [0;0,0]". But again you do not have to impose it. Best regards Kostas On Mon, Dec 20, 2021 at 9:13 PM Lesage,Anne Cecile J < ajles...@mdanderson.org> wrote: > Dear all > > > > In a python script, I defined a boundary for a 3D tetra mesh > > > > meshb.set_region(STRESSF_BOUND, fbss) > > > > How do I impose a stress free on this surface sigma=0? > > > > Thank you > > Regards > > Anne-Cecile > > > > > The information contained in this e-mail message may be privileged, > confidential, and/or protected from disclosure. This e-mail message may > contain protected health information (PHI); dissemination of PHI should > comply with applicable federal and state laws. If you are not the intended > recipient, or an authorized representative of the intended recipient, any > further review, disclosure, use, dissemination, distribution, or copying of > this message or any attachment (or the information contained therein) is > strictly prohibited. If you think that you have received this e-mail > message in error, please notify the sender by return e-mail and delete all > references to it and its contents from your systems. >
