ANSYS

Heat Transfer through a wall

The steel wall can be created in Solid Works or created in ANSYS itself as it is a simple part. A certain temperature is applied to the right end to simulate a wall maintained at a certain temperature. The left end is insulated and the 4 longitudinal sides have a convection heat transfer with the air. As expected, the heat flux travels in the direction away from the insulated end, from left to right. Above, you will find the temperature contour plot, heat flux contour plot and the heat flux vector plot.

Actuator multiphysics

Conclusion

The entire point of this analysis is to figure out if the actuator will work under each condition. For a voltage of 5 V, the max temperature is 935.794 ºC, which is below the melting point of polysilicon. Therefore, the actuator will work well. For a voltage of 7.5 V, the max temperature is 2053 ºC, which is above the melting point of polysilicon. Therefore, the actuator will not work and would likely melt. We know this because the melting point of polysilicon is 1410 ºC.

Anchor Plate analysis

In order to create the anchor plate project in ANSYS Workbench 17.2, you must download the anchor plate part through Creo and then save it as a STEP file, allowing you to import it into ANSYS as a model. After importing it into Workbench, set the units to US customary and start a Static Structural Analysis. Then, go to Engineering Data and assign Nylon 6/10 as the material to the part. Since this material is not in the software, create a new material and assign essential properties, such as Young’s Modulus, Poisson’s ratio, density and yield strength. Then, import the geometry to the part using the Geometry cell and select the STEP file of the anchor plate. Double-click the Model cell and the part will open in a new window, but make sure the units are still in US Customary. Rename all the appropriate items in the model tree to properly format the report. Select the part in the model tree and assign Nylon 6/10 to the part. Then, generate the mesh, setting the relevance center as medium and the element size as default. Next, add a refinement to the mesh to allow for more accurate stress analysis of the fillets at the bottom of the hook and update the mesh.

Next, add cylindrical supports to the four counter-bore hole surfaces by right-clicking at Static Structural and selecting the cylindrical support option. Next, add fixed supports to the four counter-bore hole base surfaces by right-clicking at Static Structural and selecting the fixed support option. Next, add a bearing force of 350 lbs to the circular face that makes contact to the bar component by right-clicking at Static Structural and selecting the bearing force option. To make sure the bearing force faces the correct direction, re-orient the model and select the flat face opposite to the cylindrical face to simulate the accurate motion of the mechanism. With this motion, the arrow should face into the surface. In the results portion of the model tree, add the equivalent stress, total deformation and stress tool, which will show the factor of safety. For the equivalent stress plot, add a convergence by selecting it in the model tree and selecting the convergence option. Be sure to modify the parameters in the convergence section to 5% allowable change, a maximum of 4 refinement loops and a refinement depth of 2. Finally, be sure to add figures to the respective plots and meshes to generate an accurate report. Now, run the analysis and obtain the results, noting that all maximum and minimum options have to be selected. From here, select the tab for the generation of the report and select the publish option.

Arch Buckling Analysis

Hood latch analysis

Conclusion

According to the results below, the main things to watch out for are to refine the mesh on the fillets to ensure accurate results. Additionally, the maximum von Mises stress was found to be 53445 dyne/cm² for a 360 dyne load. The modes found for the Modal were the 1^st mode, the 2^nd mode and the 8^th mode. If you view the final mode at its actual scale (1.0), you will find that the hood latch is almost folded in half due to the deformation.

rectangular plate with fillets and hole

playground ride-on suspension

In order to create the ride-on suspension analysis in ANSYS AIM 17.2, you must create the suspension part in Creo Parametric 3.0, making sure to use surface extrusions to make the part. Once the part is saved, save it as a STEP file, allowing you to import it into ANSYS as a model. After opening ANSYS AIM, set the units to English units and start a Structural Analysis. Once the part is imported, add a thickness to the surface extrusion using the Pull command. On the top surface, create the separate surface that will be used for the application of the horse weight using the Split command. Repeat this step for the leg weight positions at each end, where the weight of the standing child will be applied. Update the geometry and move to the mesh section of the part. Set the mesh as the default setting and generate the mesh of the part. Next, move to the physics portion and begin adding forces and supports to the models. Start by adding a fixed support to the lowest flat face at the bottom of the model to act as a ground. Next, add the 10 lb horse weight to the first split surface that was created at the top of the model using the force command, applying it in the –Y-direction. Next, add 25 lb child weights to the two split surfaces that were created at the middle of the model using the force command, applying it in the –Y-direction as well.

Generate the physics section and move to the results section. The displacement magnitude, equivalent stress and fatigue life contour plots are already in the results section, but you must manually add the safety factor and fatigue damage contour plots. Make sure to go through all the contour plots and change the appearance from smooth to banded. Also, make sure to adjust the fatigue settings to account for the equivalent stress theory. Lastly, evaluate the results section and obtain all the contour plots, as well as the maximum and minimum values.

Now that all the features and plots are finalized, duplicate the mesh cell in the workflow tab and adjust the mesh to a finer mesh (2 tabs from the right end). Then, repeat all the above steps to obtain all the graphs shown above. From these plots, its is possible to make a comparison of how the change of mesh will affect the validity of the analysis. See the table below for the % convergence of the values.

shrink fit of concentric tubes

spur gear analysis

torsional rigidity of formula frame

trailer hitch mount analysis

In order to create the trailer hitch project in ANSYS Workbench 17.2, you must download the tailer hitch parts from the website, open them in Solid Works and assemble them. Double check to see that there are no interferences in the assembly as this would cause issues later on in the analysis. Once the assembly is saved, save it as a STEP file, allowing you to import it into ANSYS as a model. After opening Workbench, set the units to US Customary and start a Static Structural Analysis. Then, import the geometry to the part using the Geometry cell and select the STEP file of the trailer hitch, but modify it in the DesignModeler. Cut the model in half by creating a new plane in the YZ plane. Then, select tools à symmetry to cut the model in half. Double-click the Model cell and the part will open in a new window, but make sure the units are still in US Customary. Rename all the appropriate items in the model tree to properly format the report. Select the parts in the model tree and make sure structural steel is selected. Next, move to the contacts section and generate 5 contact points. Make a frictional contact between the hex nut and the flat washer. Make a bonded contact between the hex nut and the ball. Make a frictional contact with the flat washer and the ball. Make a frictional contact with the flat washer and the hitch mount. Lastly, make a frictional contact with the ball and the hitch mount. Make sure that if any contact points are in the wrong position, swap the contact surfaces to make the appropriate contact. Then, generate the mesh, setting the relevance center as fine and the element size as 0.1 in.

Next, add a tongue weight of 220 lb downward in the y-direction and a pull force of 1109 lb horizontally in the x-direction. The loads should be applied to the spherical surface of the ball. These forces are added by right-clicking the model space and adding a force twice. Additionally, add a bolt pretension to the bottom cylindrical face of the ball by right-clicking the model space and adding a pretension force. Next, add a fixed constraint on the cylindrical surface of the hole by right-clicking the model space and adding a fixed support. Additionally, add a symmetry (frictionless) constraint on the cut surfaces by right-clicking the model space and adding a frictionless support. Go to the solver and make sure that the solution type is set to the Program Controlled solver. In the results portion of the model tree, add the following: Total Displacement Distribution plot, Von Mises Stress Distribution plot, Factor of Safety plot, Von Mises Stress Distribution on Hitch Mount and Von Mises Stress Distribution on Ball. Also, be sure to add contact tools to the results section as follows: Status, Penetration, Pressure and Frictional Stresstance. Finally, be sure to add figures to the respective plots, meshes, boundary conditions and contact tools to generate an accurate report. Now, run the analysis and obtain the results, noting that all maximum and minimum options have to be selected and the undeformed model is overlaid. From here, select the tab for the generation of the report and select the publish option.

Y Connector Ball Valve

High Speed Impact Dynamic Analysis of Bullet Casing

In order to create the high speed bullet project in ANSYS Workbench 17.2, you must create the wall and bullet in the Design Modeler of ANSYS. Make sure that the bullet is made with the revolve tool and the plate is made with the extrusion tool, making sure that it is opposite to the bullet. This allows the software to simulate an impact between the bullet and the wall immediately after contact. After opening Workbench, set the units to SI units and start a Dynamic Analysis. In engineering data, add the Copper Alloy NL and Structural Steel NL materials for the casing and the wall, respectively. Make sure to add the plastic strain failure criterion to the material and enter 0.75. Double-click the Model cell and the part will open in a new window, but make sure the units are still in SI units. Rename all the appropriate items in the model tree to properly format the report. Select the parts in the model tree and assign Copper alloy NL to the casing and Structural Steel NL to the wall. Make sure to add a thickness of 0.001 m to the casing and make sure the wall’s stiffness is rigid. Next, be sure to delete the contact region that is in the model tree by default. Then, generate the mesh, setting the relevance center as medium and the size function to be adaptive.

Under explicit dynamics, insert an initial condition in the form of a velocity in the z-direction at -400 m/s, where the casing is the body designated. Under analysis settings, set the end time to be 0.0005 s and make sure the “on material failure” setting is set to YES. Next, select the steel wall and make it a fixed support. In the results portion of the model tree, add the total deformation plot, equivalent stress plot, equivalent plastic strain plot and a user-defined result in the form of an effective strain plot. Finally, be sure to add figures to the respective plots, meshes and boundary conditions to generate an accurate report. Now, run the analysis and obtain the results, noting that all maximum and minimum options have to be selected. From here, select the tab for the generation of the report and select the publish option.

In conclusion, it can be seen that the bullet will deform completely after running into the wall at such a high speed. Since the wall was fixed, the wall is assumed to not deform and maintain its shape during the analysis. The red dots seen in the plots above represent the combustion of the bullet casing due to the impact of the collision. Even the small remainder of the bullet that remains after the impact has deformations and did not maintain its shape, as one would expect.

Laminar Flow in 3D Backward Step

Conclusion

According to the results present, the maximum value of velocity at the exit of the 3D backward step duct is 4.658 m/s. This can be seen by the plot of the maximum velocity outlet profile, as well as the contour velocity plots on the symmetry plane and outlet. According to the flow profile at the outlet, it is evident that there is a fully developed laminar flow at the duct exit. This also means that the velocity profile does not change as a function of the position along the duct. Refer to the figure below to view the development of a fully-developed Laminar Flow. If you view the velocity profile at the outlet as Chart 1 in the original report, it is similar to that of the final picture in the figure below.

Missile Projectile Compressible Flow

Simulating Flow in Static Mixer

Conclusion

After running the fluid flow analysis on the extended static mixer, the conditions of the outlet were found. At the outlet, the speed was found to be 4.7889 m/s, the temperature of the water was found to be 321.15 K and the maximum pressure was found to be 5207.1 Pa. Both inlets entered with a velocity of 2 m/s, mixed with each other, then exited through one exit. This caused the fluid in this mixer to exit at a faster speed. Since one inlet entered as a hot liquid and the other entered as a cold liquid, the exiting liquid exited at a temperature between these values.