Diagrams for Truss and Rigid Frame

Frames in broad sense includes both truss and rigid frame, each of which is classified again into 2-D or 3-D case. The results of frame analysis are represented chiefly by member forces instead of stresses or strains. The frame member forces a re usually represented best by diagrams, although axial force of truss members may be re p resented better by text strings than by a diagram. The commands displaying the diagrams are given as menu items in menu. As described at the beginning of this chapter, the first part of the menu consists of items to select the diagram and varies depending on the analysis type, and remaining items are common for all types. Whenever the analysis type is altered by "Project Setup" the menu items are changed to relevant ones. The first part items of the menu are enabled only when the model is complete for solution, and thus corresponding data are available. The diagram is displayed instantly after the corresponding menu item is chosen. The diagram is drawn over the shape of the structure. Two or more diagrams can be displayed at the same time.