Difference in SF1/SF2, ABAQUS
I am analysing a double symmetrical (domed) shell in Abaqus and what confuses me are the differences in the SF1/SF2 plots as well as SM1/SM2 plots.
In the plots visualised with this message you can see the sagging moments in both directions. Unfortunately, the plots are different which is quite confusing as the structure is double symmetrical.
If I'm not mistaken:
SF1/SF2 are the direct membrane forces per unit width in local 1-direction/2-direction.
SM1/SM2 are the bending moment forces per unit width about local 1-axis/2-axis.
The shell is meshed with quadratic triangular thin elements (STRI65: six-node triangular thin shell, using five degrees of freedom per node) with an edge size of approximately 0.2 m.
Thank you in advance,