The Failure tab controls and reports the analyses applied to components of the current optimization group and shows the margins of safety (MS) for the current component after an analysis.
Family Concept Figure
Click on the desired panel or beam concept for a representative figure of that configuration. When the concept is selected, the margins for that concept are displayed. The concept that appears at the end of an analysis is the optimum concept.
Specific objects (flange, web, etc.) on the figure can also be selected. When an object is selected, the displayed margins are filtered to exclude modes not related to that object.
Important: There are two types of failure modes: concept and object. Concept modes pertain to the entire panel (crippling). Object modes are local to a specific object (material strength).
Failure Analysis Categories
Highlight one or more failure categories to filter the list of analyses in theAvailable Failure Analysesframe. In the figure above, only the panel buckling and crippling failure modes are displayed.
Multiple categories can be selected using [Ctrl]+click. A range of categories can be selected using [Shift]+click.
Analysis Selections
You may turn any analysis on or off by clicking in a box. The hatched pattern indicates that the box is on and a margin will appear for the next analysis.
Important: Failure analyses are turned on and off by clicking the corresponding cell or by clicking the Togglebuttons.
Analysis results are shown in theAvailable Failure Analysesframe. A margin of safety is reported for limit loads and ultimate loads for each analysis method. Limit margins use limit loads and limit allowables. Ultimate loads use ultimate loads and ultimate allowables.
For example, when analyzing a metallic material, the yield stress allowable is used for limit loads and the ultimate stress allowable for ultimate loads. Composites materials do not have yield allowables so the same allowables are used for both limit and ultimate margins.
Failure analysis selections are stored on the component-level meaning that each component in a group can have a unique failure analysis configuration. Within a component, failure modes can be set for specific concepts.
Failure selections can be applied across many components. To apply failure selections to a group, assembly, or project use the Options button in the right hand corner. The Options button also allows you to reset the failure selections to the database default values.
When applying failure selections to multiple components, the selections will only be applied for the visible failure modes. If a failure mode is not visible, its selections will not be copied. In the example below, the analysis selections of panel buckling and crippling will be applied to all components in the project for the bonded hat panel concept.
Important: Analysis selections will only be applied for the visible failure modes.
