Query regarding tensile test

Respected sir,
How to fix one side of a rectangular box when performing a uni axial tensile test using lammps program.
Regards,
Ritesh Satwani

Respected sir,
How to fix one side of a rectangular box when performing a uni axial tensile
test using lammps program.

this is too generic a question to give a specific answer. there are
different ways to immobilize atoms, e.g. using fix setforce.

and the “fix deform” as well which deals with the box geometry.

Carlos