Frequency Constraints
In some cases, you may want to change the natural frequency of an object, so as to avoid resonance with other parts in your design. Use frequency constraints to control the frequency at which an optimized part vibrates.
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Create parametric sketches, geometry, and PolyNURBS with construction history and variables.
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Set up and run a topology, topography, or gauge optimization.
Optimization will find the most effecitve design for each design space in a model in response to the applied loading conditions on that model. You can run several different types of optimization including topology, topography,gauge, and PolyNURBS shape optimization.
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Define and run a topology, topography, or gauge optimization using the Run Optimization tool.
To run an optimization, select the Run Optimization tool, choose a run type and objective, and click Run.
Several different types of optimization are available in Inspire, including topology, topography, and gauge optimization.
When running an optimization, your objective may be to maximize stiffness, maximize frequency, or minimize mass. Different objectives are available based on the type of optimization selected.
Most optimization constraints are applied using the Run Optimization window. The constraints that are available change based on the optimization type and objective.
When running topology or gauge optimization and maximizing stiffness, mass targets are used to specify the amount of material to keep.
When running a topography optimization, bead options are used to help control the manufacturability of the part. Bead patterns can be used to control the shape of the beads.
The element size dictates the quality of your optimization results. In general, the smaller the element size, the more accurate the result, but the slower it will run.
When running a gauge optimization, the gauge thickness is used to define the target Minimum and Maximum gauge thickness for each design space.
When running topology optimization on a surface, minimum gauge constraints are used to avoid holes in the optimized part and help show where rib structures should be placed.
A global stress constraint can be applied to limit the maximum stress in the model and is used when your optimization objective is to minimize mass.
In some cases, you may want to change the natural frequency of an object, so as to avoid resonance with other parts in your design. Use frequency constraints to control the frequency at which an optimized part vibrates.
When running a topology optimization, you can control wall thicknesses and the diameters of beam-like members in a shape by specifying a minimum and/or maximum thickness. Wall thicknesses are controlled by the same parameter.
Inspire provides the ability to constrain the load in fasteners and cylindrical hole supports to achieve improved load distribution in a structure.
In addition to selecting an optimization type, objective, and constraints, you can also select from a variety of additional options when running an optimization.
Export a FEM file using the Export button on the Run Optimization window.
View and compare optimization results, view design violations, and explore the generated shape.
Generate PPT or PDF reports from structural analysis results. The Report tools are available after you have run a structural analysis.
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Evaluate designs by using geometric variables and applying a design-of-experiments (DOE) or optimization method. We recommend fully constraining your sketch when sketch variables are used in the design exploration.
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Set up your model and run a structural analysis or optimization.
Set up and run a topology, topography, or gauge optimization.
Define and run a topology, topography, or gauge optimization using the Run Optimization tool.
Most optimization constraints are applied using the Run Optimization window. The constraints that are available change based on the optimization type and objective.
In some cases, you may want to change the natural frequency of an object, so as to avoid resonance with other parts in your design. Use frequency constraints to control the frequency at which an optimized part vibrates.
In some cases, you may want to change the natural frequency of an object, so as to avoid resonance with other parts in your design. Use frequency constraints to control the frequency at which an optimized part vibrates.
Option | Description |
---|---|
Maximize Frequencies | Select Maximize frequencies. (If you selected Maximize Frequency as the optimization objective, this step is not necessary.) |
Minimum | Select Minimum and enter the lowest frequency
you want to allow in the text field. Use the arrows in the scroll menu to select the number of modes that you must exceed the minimum frequency. |
Option | Description |
---|---|
Maximize Frequencies | The Shape Explorer displays the frequencies
for the first six modes. |
Minimum Frequency Constraint | The Shape Explorer displays the frequencies
for the modes that you selected. |
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