Step 4: Define Structural Supports -To define For this truss problem, the frame elements are To define an element, click on a joint at the beginning of the elementĪnd than on the joint at the end of the element.
#How to show loads on structure in sap 2000 update
The Properties of Object window will appear.Īt this point, we can select a frame object you want to draw, or use the defaultĪnd update the frame element properties later. Step 3: Draw Frame Elements - To define eachįrame element, select the Draw Frame Element button Click on grid intersection lines to define joints. Locations, select the Draw Special Joint button on the Step 2: Locate Truss Joints -To define the joint Left-hand side window so that you have a generalīutton on the top bar to see a 2D view of the Located along the top edge of the interface window. To adjust the views, select an window and click on the appropriate view button When you click OK, SAP2000 generates the grids lines you have justĭefined and shows you the grid system in the SAP2000 interface window.īy default SAP2000 show two views of your problem, typically a 3-D view and an x-y Y-direction grid line is necessary for 2D problems. The number of grid line in the x and z-directions are 5 and 2, For the truss shown above, the the grid spacing in the x and z-directions is 240 Your grid system by entering data on the Quick Grid Lines SAP2000 assumes that your two-dimensional structure resides in the x-z plane. Window will appear (see the figure on the right). You select Grid Only on the menu, the Quick Grid Lines Necessary and SAP2000 will convert the valuesįor you. Select you units for the problem, the default is Grid lines and grid spacing to locate the joints of the truss. To use the grid, determine the appropriate number of When you start SAP2000 Educational Version 20 you should see theįor general structures. To help students become familiar with some of the numerous aspects and features of SAP2000, the following tutorial will focus on determining the forces in each member of the Questions, or you you find any of these instructions unclear or inaccurate, please contact The order of some of these steps is not critical however,Īll step should be completed before execution of the the analysis. The right-hand rule applies in the figure for determining the sense of the moments shown by the double arrows.The following is a step-by-step procedure for analysis a two-dimensional truss.No output is produced within the end offset length. When end offsets along the length of the frame element are present, the internal forces and moments are output at the faces of the supports rather than the ends of the element.Positive M3 bending moments cause compression on the positive 2 face and tension on the negative 2 face.Positive M2 bending moments cause compression on the positive 3 face and tension on the negative 3 face.For example, when V2 acting on a negative 1 face is positive, it is oriented in the direction of the negative local 2-axis. Positive internal forces (P, V2 and V3) and positive axial torque (T) acting on a negative 1 face are oriented in the negative direction of the corresponding element local coordinate axis.For example, when V2 acting on a positive 1 face is positive, it is oriented in the direction of the positive local 2-axis. Positive internal forces (P, V2 and V3) and positive axial torque (T) acting on a positive 1 face are oriented in the positive direction of the corresponding element local coordinate axis.Note the following about the frame element internal forces: The positive 2 and 3 faces are those faces with outward normals in the positive local 2 and 3 directions, respectively, from the neutral axis. At this same section, the negative one face is one whose outward normal is in the negative local 1 direction. At this section, the positive 1 face is the face whose outward normal (arrow that is perpendicular to the section and pointing away from the section) is in the positive local 1 direction. Consider a section cut through the element in the 2-3 plane. This sign convention can be described by defining the concept of positive and negative faces of an element. The sign convention for frame element internal forces is illustrated in the figure below. In frame element output displayed in a tabular form, either on the computer screen, printed to a printer or printed to a file, the locations of the output stations are identified by the absolute distance to the station measured from the i-end of the element. These internal forces and moments are present at every cross section along the length of the frame element.įor each load case and load combination, the frame element internal forces and moments are computed and reported at each frame element output station. M3, the bending moment in the 1-2 plane (about the 3-axis).M2, the bending moment in the 1-3 plane (about the 2-axis).
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