- Access
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- Click Analysis
Analysis Types Enter the list of cases that must be considered, and then click Change Analysis Type.
- Click Analysis
Use this dialog to change the type of analysis for the selected load cases.
- Case list
- Specifies the list of load cases that will be considered for the analysis.
- Auxiliary
- Select this option if you want to exclude the list of cases from the calculations.
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Note: No results will be available for the case. In linear-static analysis, results of a combination including such a case are unavailable. For non-linear analysis an auxiliary case may be useful when only the results of a case combination are of interest to the user. To reduce calculation time, calculations of a given case may be switched off, while a non-linear combination is always calculated as a separate case including a load combination.
Structure non-linearity can be related to a single structure element (structural or material non-linearity) or can be a result of the force-deformation relationship in the whole structure (geometric non-linearity). If a structure includes non-linear elements (such as cables, unilateral supports, and material plasticity), calculations applying the incremental method are performed.
- Non-linear
- Select this option to consider second-order effects, such as the change of bending rigidity depending on the longitudinal forces.
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Note: Geometric non-linearity takes the actual higher-order effects into consideration and often improves the convergence of the calculation process for a structure including non-linear elements.
- P-delta
- Select this option to consider third-order effects, such as the additional lateral rigidity and stresses resulting from deformation.
- Buckling
- Select this option to determine the critical factor for successive modes of structure buckling.
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Note: The case loads are multiplied by this factor in order to calculate buckling.
See also:
Bar elements in the non-linear analysis available in Robot