Filtering Design Load Cases

In general, Load Case Filtering can be enabled before any Analysis or Sizing pre-processing steps have been taken. However, the generation of a Critical Load Case list is dependent on running an initial Analysis of the entire Project. Therefore, be sure to that each Zone of interest:

The ability to enable Load Case Filtering exists in the Included Overrides Section of the Design Load Overrides table. The appropriate flag is indicated in the image below.

This flag essentially tells HyperX to - in the next Sizing/Analysis - use the metrics defined in the Settings form to identify the critical Design Load Cases for each Zone and populate the included Design Loads table accordingly.

Although the metrics outlined in the Design Loads Settings form default to generally recommended values/options, this is also the step to review those options to make sure all filtering metrics are set appropriately. See the section below.

Filtering Settings

The Design Load Filtering Settings form, accessed from the "Advanced" button on the right-hand side of the Design Load Overrides form, provides the following options. The respective default values and variable types are defined below for reference.

Include failure method diversity when filtering load cases (Default = True)

[Boolean] If checked (true), the Load Cases are flagged based on producing the lowest margin within any analysis category (local buckling, crippling, etc.)

Generate filtered load cases based on analysis methods (Default = True)

[Boolean] If checked (true), the critical Load Cases are determined using the margins-of-safety for the analysis methods.

Generate filtered load cases based on peak element loads (Default = True)

[Boolean] If checked (true), the critical Load Cases are determined using the peak element load metrics. See FEA Loads Processing.

Margin of Safety % threshold for load case filtering (Default = 20)

[+Real] Sets the maximum percentage margin delta for identifying a Load Case as a 'hit'.

Controlling load cases to report per zone per analysis (Default = 10)

[+Real] Defines the maximum number of 'critical' Load Cases to flag for each analysis category. Modifies the criteria for determining a 'hit.'

Design Load Cases can only be deemed 'critical' if they fit a peak load metric or generate a critical margin of safety for a given Zone/Joint. Therefore, the only way to identify the critical case list is to run an initial Analysis or Sizing pass on the Project or Structure in question. By nature, Analysis is the quicker of the two.

Make sure all Zones are set to Analysis - or have Analysis Overrides - in their respective Design Properties. One particularly convenient option is to Analyze the As Modeled Design (i.e. import the existing property definitions in your FEM as Design Properties and run a margin assessment).

As the Sizing/Analysis runs, the Design Load Cases that generate the most 'hits' for each Zone will automatically populate the Included Design Loads table.

Activate the following flag to enable HyperX to use the Included Design Loads table generated in the previous step in subsequent Sizing runs. Resize the Project or Structure that was Analyzed during the previous step.