Force Import in Altair OptiStruct Posted November 9, 2017 · Report reply Hi, I have a .csv file with nodes coordinates and forces (x,y,z,Fx,Fy,Fz) that I need to import in HM. I found 2 solutions: Use Field > realize BCs > Create > Forces > Linear Interpolation Both take the .csv file as an input and apply its forces to the model. What are the differences? What should I use? Thanks for the help!