Expand the Assembly container in the Model Database.Set Instance Type to Dependent (mesh on part).The viewport changes to the Assembly Module. Double-click on Assembly in the Model Database.The Edit Section Assignment window is displayed. Click and drag with the mouse to select the entire truss.You see the message Select the regions to be assigned a section displayed below the viewport.Expand the Parts container in the Model Database.In the Basic tab, set Material to the AISI 1005 Steel which was defined in the material creation step.Click Continue... The Edit Section window is displayed.Double-click on Sections in the Model Database.Set Young’s Modulus to 200E9 (which is 200 GPa) and Poisson’s Ratio to 0.29. Select Mechanical > Elasticity > Elastic.Set Mass Density to 7872 (which is 7.872 g/cc) Double-click on Materials in the Model Database.Use the Add Dimension tool to set the length of the horizontal elements to 2 m and the length of the vertical elements to 1.5 m.
Use Add Constraints > Equal Length tool to set the lengths of the required truss elements to be equal.Use the Create Lines: Connected tool to draw the profile of the truss.Double-click on Parts in Model Database.Right-click on Model-1 in Model Database.(To understand why these steps were followed please watch the videos with the sound turned on). This is a text version of the steps followed in the videos above. This setup is similar to the previous one except that there is only one concentrated force load which is applied for a very short duration and I am interested in the dynamic reaction of the structure to this load.
In this tutorial I analyze a 2D truss structure which is dynamically loaded with concentrated forces for a short duration. Specify point of application of loads using sets.