Thanks Mr. Peter. I tried generating beam elements from line bodies (by assigning the cross sections,OD and ID).nBut I tend to lose some members of the chassis while importing the line body diagram into ansys. So, I coudn't proceed with the beam element method. Due to time constraints, I had to work with the solid body. nI designed it in solidworks.nExported as iges( line bodies- 3D curves-B-spline)nI have attached the picture (members missing).This is the state after assigning cross section.nCan you check it out.nThanksn