Dear all,
I would like to apply mass forces in my model via definition of three selfweight (in x/y/z directions) as well as some idividual masses provided by the vendor of our equipment (equal value in three directions in predefined points). I am wondering whether I must define a sign for those masses (e.g. negative sign for masses forces and selfweight in vertical direction as to be finally in the same direction as gravity), or not, simply three values without negative sign in each direction of x/y/z?
Thank you for your help,
Regards