element mass density

srisri_iitk · Post by **srisri_iitk** » Sun May 27, 2007 10:51 pm

If we want to specify mass density for a material, can we input it through body force in quad element? there is also element density in quad element. So which one i have to use for density?
I am in confusion some one please help me out

silvia · Post by **silvia** » Mon May 28, 2007 7:55 am

mass and force and handled separately in opensees, so you have to specify both!

srisri_iitk · Post by **srisri_iitk** » Mon May 28, 2007 8:47 pm

so i need to specify density as well as body force of -rho*g for the element
I dont want to calculate stresses for gravity loading but i just need to define initial condition before transient analysis
So can i proceed with element density or provide both

silvia · Post by **silvia** » Tue May 29, 2007 8:16 am

you should have gravity forces applied.