The LS-DYNA translator will only write out elements that are associated with material. (Other LS-DYNA boundary conditions can be setup from ICEM as well.) To do this, ICEM should be configured from the Settings Menu (under Tools) to have Mechanical Preprocessing activated. Check off the Mechanical Preprocessing option, Apply and restart ICEM to activate this feature. Once Mechanical Preprocessing is activate, there will be 4 extra tabs across the top of the ICEM viewer: 1. Properties 2. Constraints 3. Loads 4. FEA Solve Options The Properties tab is where you can define materials and assign them to element families. Before starting, make sure that all the part families that you will need for material, load and constraint assignment are present. 1. Create the required materials under Create Material Property 2. Visit the required element types( 0D 1D 2D and 3D) to assign the Material and Property type according to the problem definition 3. This is all that is required to write out the elements. (To apply loads and constraints for a structural problem, you can visit the Constraints and Loads tabs accordingly.) Save the project to store your element and property assignments 4. Finally, visit the FEA solve options tab to set Solver Parameters, Analysis Type etc … (In each of these cases, it may be sufficient just to ensure that the solver is set to LS-DYNA) 5. Under the Solver Output icon, set the solver to LS-DYNA and click on Apply. This will write out all the elements for which material properties have been defined.