Centre of Gravity - Mechanical Script

Erik Kostson

How can I get the centre of gravity of an assembly of parts using scripting inside mechanical?

Erik Kostson

We can take this very nice script here (https://discuss.ansys.com/discussion/423/extract-mass-per-body-through-scripting), and add the following to calculate the Centre of Gravity in x (cogx), y (cogy) and z (cogz):

#add at the top and before main loop (constant declaration)
sumt=0
summx=0
cogx=0
summy=0
cogy=0
summz=0
cogz=0
##add inisde main loop
                        sumt=sumt+bodyMassValue
                        summx=summx+bodyCentroidXValue*bodyMassValue
                        summy=summy+bodyCentroidYValue*bodyMassValue
                        summz=summz+bodyCentroidZValue*bodyMassValue
#add outside loop and at the end
cogx=summx/sumt
cogy=summy/sumt
cogz=summz/sumt