《ANSYS——实例分析》.pdf

ANSYS Tutorials Grady Lemoine Table of Contents Example 1: 2-D Static Stress Analysis in ANSYS2 Example 2: 3-D Static Stress Analysis 5 Example 3: 2-D Frame With Multiple Materials and Element Types10 Example 4: 3-D Truss15 Example 5: Simple 2-D Heat Transfer 20 Example 6: Modal Analysis22 Example 7: Plate Buckling Analysis Part 1: Eigenvalue Buckling Analysis26 Example 8: Plate Buckling Analysis Part 2: Nonlinear Buckling Analysis31 Example 9: Simple Dynamic Analysis35 Example 10: Box Beam 39 Page 1 Example 1: 2-D Static Stress Analysis in ANSYS In this example we will examine the stress concentrations in a flat plate with three holes, as shown in Figure 1.1. Figure 1.1 Preprocessor First, we will select an element type, define element and material properties, create a model, and mesh it in the Preprocessor. Selecting an element type: 1. Click on ‘Preprocessor’ in the ANSYS main menu at the left side of the screen. 2. Click on ‘Element Type-Add/Edit/Delete’. 3. Click ‘Add’. 4. Choose ‘Solid’ from the ‘Structural’ list of element types, then ‘Quad 4node 42’ from the list on the right. This chooses a four-node quadrilateral 2D element. 5. Click ‘OK’, then click ‘Close’ on the Element Types box and close the Element Types menu. Defining material properties: 1. Click ‘Material Props’ in the Preprocessor menu. 2. Click ‘Material Models’. 3. Double-click ‘Structural’ in the right side of the window, then ‘Linear’, then ‘Elastic’, then finally ‘Isotropic’. Page 2 4. Enter in values for Young’s modulus and Poisson’s ratio. In this problem we use a Young’s modulus of 70e9 and a Poisson’s ratio or 0.3, which are ballpark values for aluminum (note that ANSYS understands scientific “e” notation). No other material properties will be needed, so click ‘OK’, t