Rob Pilsbury
B.S. Mechanical Engineering Class of 2020
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ANSYS Simulations
An Explicit Dynamic simulation was executed using ANSYS Workbench. The rod and the plate geometries were created in the DesignModeler as two separate bodies. Aluminum Alloy NL (non-linear) was assigned as the rod material. Structural Steel NL was assigned for the plate. A mesh was created. An initial velocity condition was set to the aluminum rod of 300 m/s. The back of the steel plate was set as a fixed support. Gravity conditions were applied in the negative Y direction. The plots for the directional deformation in the Z direction, equivalent von-Mises stress, and the equivalent plastic strain were created. A section view is used to display the internal stress and strain inside of the aluminum rod. The maximum and minimum points are show for each result.
The rubber cylinder in this simulation is being pressed between two plates. The model has symmetry about the X and Y axis so only one quarter of the model has to be used for the simulation. A displacement is placed on the top of the rubber which acts as the force. Friction-less supports are added on the sides and on the contacting surface of the rubber and plate. The equivalent stress and pressure were solved for. A contact tool analysis was preformed on the contacting surface to indicate if the surfaces were sliding or sticking.
The bullet casing geometry was created by revolving a sketch of the profile about the Z axis. The wall was made with a rectangle extruded in the negative Z direction. The casing had its material assigned as Copper Alloy Non-Linear. Structural Steel Non-Linear was set as the wall. Plastic strain failure properties were added to the copper alloy in order to add a maximum equivalent plastic strain value of 0.75. An initial velocity was set for the casing of 400 m/s. in the negative Z direction. The wall was set as fixed. A mesh was created. Explicit Dynamic results for the total deformation, equivalent stress, and equivalent plastic strain were generated. A user defined effective strain was also calculated by adding the expression EFF_STN. The results show the fragmentation of the casing after 5.0e-004 seconds.
The static mixer is a vessel which has 2 inlets and 1 outlet. Each of the inlets have water flowing in at the same rate, but at different temperatures. ANSYS AIM Fluid Flow template was used for this simulation. The volume, inlets, and outlets were defined. A mesh was created with refinements at the faces of the inlets and outlet. Inlet 1 (left side of mixer) had a temperature of 357 K. Inlet 2 (right side of mixer) had a temperature of 285 K. Both inlets had a flow velocity of 2 m/s. The outlet had an initial pressure of 0 Pa, as it was open to the atmosphere. The velocity vector plot and a temperature contour plot were created on a sliced plane through the inlets. A temperature contour plot was created at the outlet. Streamline plots were created using temperature, velocity, and pressure as the variable. The outlet had more results solved for the pressure, temperature, and velocity using the Calculated Value function.
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