Topology Optimisation For 3D Cantilever Structure/Engineering – Mechanical Engineering

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Option 1: Topology optimisation for 3D cantilever structure PART A: Static stress analysis Create FE model in Solidworks: You could use Solidworks to create your finite element modelling, please export the geometry as IGES File (i.e. beam.iges) Define Geometry of cantilever beam in ANSYS Workbench: Double click on Geometry in Static Structural tree> Select desired length unit = Meter> File> Import External Geometry File> beam.iges (Open the geometry file which you saved in

Solidworks)> then click on > File> Close DesignModeler Create FE model in ANSYS Workbench: Step 1: Open Static Structural module: Run Workbench 14.0> In Toolbox (on the left)> Analysis Systems> Double click on “Static Structural” (Now you could see Static Structural tree in Project Schematic) Step 2: Define Geometry of cantilever beam: Double click on Geometry in Static Structural tree to enter DesignModeler> Select desired length unit = Meter> Right click on XYPlane> Click on Look at and start Sketching

Click on Sketching under Sketching Toolboxes on the left> Select “Rectangular” under Draw menu> Draw a small rectangular> Click on Dimensions Menu> Use General to define the length of cantilever beam (H1=3m) (Click on one horizontal line, the line highlighted in yellow colour, then drag down the line a little and change the dimension in Details View window) and the

height of beam (V2=1m)> click on “zoom to fit” button After Sketching, click on “Extrude” in the Features bar> click on Apply in Details View window (bottom left)> right click on “Extrude1” in Tree Outline

window> Generate (Now you created the cantilever model for FEA)> Close DesignModeler

MECH3361 Mechanics of Solids II FEA mini-project: Option 1

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Step 3: Generate the Meshing: Double click on Model in Static Structural tree>

click on Mesh on the left> In the “Details of “Mesh”” Window> Expand Sizing> Click on Default next to Element size> type in 0.1> Then click on

Update button > File> Close Mechanical Step 4: Define Boundary Condition: Double click on Setup in Static Structural tree>

Supports > Fixed Support> Face > Pick left end of beam> In “Details of “Fixed Support”” Window> Click on Apply next to Geometry

Step 5: Define Load: Click on “Loads” > Force> Vertex > Select one bottom corner of right end of beam> Apply> In “Details of “Force”” Window> Define By = Components> Y Component = -1000 N

Click on “Loads” > Force> Vertex > Select another bottom corner of right end of beam> Apply> In “Details of “Force”” Window> Define By = Components> Y Component = -1000 N Step 6: Solution: Right click on Solution(A6) > Insert> Stress> Equivalent(von-Mises)> Deformation> Total> Solve Step 7: Postprocessing: To view stress or deformation contours, click on Equivalent Stress> Figure of von Mises stress is shown above (You could drag colour bar to change the limitation of maximum and minimum stress)> click on Total Deformation> Figure of total deformation is shown on the right> File> Close Mechanical PART B: Topological Optimization in ANSYS Workbench Step 1: Open Shape Optimization (Beta) module: Run Workbench 14.0> Tools (on the top of screen)> Options> Appearance> turn on “Beta Options”> OK> In Toolbox (on the left)> Analysis Systems> Double click on Shape Optimization (Beta)(Now you could see Shape Optimization tree in Project Schematic) Step 2: Define Geometry of cantilever beam: Drag “Geometry” from Static Structure tree to Shape Optimization tree

Step 3: Generate the Meshing: Double click on Model in Shape Optimization tree> click on Mesh on the left> In the “Details of “Mesh”” Window> Expand Sizing> Click on Default next to Element size> type in 0.1> Then click on Update button > File> Close Mechanical

MECH3361 Mechanics of Solids II FEA mini-project: Option 1

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Step 4: Define Boundary Condition: Double click on Setup in Shape Optimization tree> Supports > Fixed Support> Face > Pick left end of beam> In “Details of “Fixed Support”” Window> Click on Apply next to Geometry

Step 5: Define Load: Loads > Force> Vertex > Select one bottom corner of right end of beam> Apply> In “Details of “Force”” Window> Define By = Components> Y Component = -1000 N

Loads > Force> Vertex > Select another bottom corner of right end of beam> Apply> In “Details of “Force”” Window> Define By = Components> Y Component = -1000 N

Step 6: Solution: Click on Shape Finder > In “Details of “Shape Finder”” Window> Target Reduction = 20% (20% of global volume reduced

except fixed and loading areas)> Solve Step 7: Postprocessing: To view “shape” results, click on Shape Finder>

Capped IsoSurfaces >

Bottom Capped IsoSurfaces You could also check the mass results in “Details of “Shape Finder”” Window.