💥💥💥 How to prepare design of experiment (DOE) in Ansys Workbench ?

 To prepare a design of experiment (DOE) in ANSYS Workbench, you need to follow these steps:

• First, you need to define the parameters that you want to vary in your model. You can do this by right-clicking on the Parameters branch in the Project Schematic and selecting Define Parameters. You can also use the Parameter Manager to create and edit parameters¹.
• Next, you need to assign the parameters to the appropriate inputs or outputs in your model. For example, if you want to vary the load magnitude or the material properties, you can assign parameters to these values in the Engineering Data or the Mechanical branches. You can also use expressions to define parameters as functions of other parameters¹.
• Then, you need to create a new Design of Experiments system by dragging and dropping it from the Toolbox under Design Exploration. You can connect it to the Parameter Set and the Analysis system that you want to perform the DOE on².
• After that, you need to double-click on the Design of Experiments system and select the type of DOE that you want to use. There are different types of DOE methods, such as Full Factorial, Central Composite, Box-Behnken, Latin Hypercube, etc. Each method has its own advantages and disadvantages depending on the number of parameters, levels, and design points. You can also specify the lower and upper bounds for each parameter and the number of levels or design points²³.
• Finally, you need to update the Design of Experiments system by clicking on the Update icon in the toolbar. This will run the analysis for each combination of parameter values and generate a table and a chart with the results. You can also export the data to a file or a report².

For more information and examples, you can watch some of the video results that I found for you⁴⁵⁶. You can also read some of the web results that I found for you⁷⁸⁹. I hope this helps you learn how to prepare a design of experiment in ANSYS Workbench. If you have any further questions, please feel free to ask me. 😊

How to specify upper and lower bounds and number of levels in Design Of Experiments in Ansys Workbench ?

To specify upper and lower bounds and number of levels in Design of Experiments in ANSYS Workbench, you can follow these steps:

• First, you need to create a new Design of Experiments system by dragging and dropping it from the Toolbox under Design Exploration. You can connect it to the Parameter Set and the Analysis system that you want to perform the DOE on¹.
• Next, you need to double-click on the Design of Experiments system and select the type of DOE that you want to use. There are different types of DOE methods, such as Full Factorial, Central Composite, Box-Behnken, Latin Hypercube, etc. Each method has its own advantages and disadvantages depending on the number of parameters, levels, and design points²³.
• Then, you need to click on the Details view and expand the Input Parameters branch. You will see a list of parameters that you have defined in your model. For each parameter, you can specify the lower and upper bounds by entering the values in the corresponding columns. You can also use expressions to define the bounds as functions of other parameters or constants².
• After that, you need to expand the Output Parameters branch. You will see a list of outputs that you have defined in your model. For each output, you can specify the number of levels by entering the value in the corresponding column. The number of levels determines how many discrete values the output can take within its range².
• Finally, you need to update the Design of Experiments system by clicking on the Update icon in the toolbar. This will run the analysis for each combination of parameter values and generate a table and a chart with the results. You can also export the data to a file or a report².

What are advantages and disadvantages of Full Factorial, Central Composite, Box-Behnken, Latin Hypercube in Ansys Workbench Design Of Experiements ?

The advantages and disadvantages of Full Factorial, Central Composite, Box-Behnken, and Latin Hypercube designs in ANSYS Workbench Design of Experiments are as follows:

• Full Factorial design: This design involves all possible combinations of the levels of the factors. It can estimate all main effects and interactions, as well as higher-order terms. It is the most powerful and accurate design, but also the most expensive and time-consuming. It requires a large number of runs, especially when the number of factors or levels is high¹².
• Central Composite design: This design is a fractional factorial design with center points and axial points (also called star points). It can estimate first- and second-order terms, as well as some interactions. It can model curvature in the response surface and find the optimal settings for the factors. It is useful for sequential experiments, as it can build on previous factorial experiments. It requires fewer runs than a full factorial design, but more than a Box-Behnken design. It may also involve extreme values for the factors that are outside the safe operating zone¹²³.
• Box-Behnken design: This design is a fractional factorial design with center points, but no axial points. It can also estimate first- and second-order terms, but not all interactions. It can model curvature in the response surface and find the optimal settings for the factors. It requires fewer runs than a central composite design, but more than a Latin Hypercube design. It does not involve extreme values for the factors, so it ensures that all runs are within the safe operating zone¹²⁴.
• Latin Hypercube design: This design is a random sampling method that ensures that each factor is varied over its entire range. It can estimate main effects and some interactions, but not higher-order terms. It cannot model curvature in the response surface or find the optimal settings for the factors. It requires the least number of runs among the four designs, but it is also the least accurate and precise. It may also involve extreme values for the factors that are outside the safe operating zone¹² .

How to read results from other design points in Ansys Workbench ?

To read the results from other design points in ANSYS Workbench, you can follow these steps:

• First, you need to make sure that you have saved the results for each design point before solving. You can do this by checking the Retain box in the Parameter Set window for each design point that you want to keep¹.
• Next, you need to close the Mechanical window and open the Parameter Set window. You can do this by right-clicking on the Parameter Set branch in the Project Schematic and selecting Open¹.
• Then, you need to right-click on the desired design point name in the Table of Design Option window and select Set as Current. This will load the results of that design point into the Mechanical window¹².
• After that, you need to open the Mechanical window and post-process the results as usual. You can use ANSYS FLUENT or ANSYS CFD-Post to visualize and analyze the results³.
• Finally, you can switch between different design points by repeating steps 2 and 3. You can also export the results of each design point to a file or a report if you want².