The Target Characteristic Length (LS-DYNA) global option allows you to set a target Characteristic Length (LS-DYNA) that you would like the mesh to satisfy to avoid small elements and resulting small critical time-step for Explicit simulations in the Mesh Details view.

If Check Mesh Quality is set to Yes, Errors and Warnings, a warning message is displayed to help you address the issues preventing the mesh from satisfying the target Characteristic Length (LS-DYNA). You can right-click the Message field and select the Show Elements option from the context menu to create Named Selections for the elements that do not meet the target.

By default, Target Characteristic Length (LS-DYNA) is available only when the Physics Preference is Explicit. When the Target Characteristic Length (LS-DYNA) is larger than the global Element Size, the Target Characteristic Length (LS-DYNA) is internally reset to half of the global Element Size.