This feature helps you with the load application. You can have the required loading applied incrementally. This option is particularly suitable for your calculations according to the large deformation analysis. Furthermore, you can easily perform post‑critical analyses in RFEM.
RFEM 6 offers you a wide range of helpful and efficient functions for working with load combinations. You can add the load cases included in load combinations together and then calculate them in consideration of the corresponding factors (partial safety and combination factors, coefficients regarding consequence classes, and so on). Generate the load combinations automatically in compliance with the combination expressions of the standard. You can perform the calculation according to the linear static analysis, second-order analysis, or large deformation analysis, as well as for post-critical analysis. Optionally, you can define whether the internal forces should be related to the deformed or non-deformed structure.
The loading can be applied incrementally. The increment option is especially useful for calculations according to the large deformation analysis. For members, you can consider shear deformations and apply internal forces to a deformed or undeformed structural system. In addition, RFEM allows you to perform post‑critical analyses.
The load cases included in load combinations are added together and then calculated in consideration of the corresponding factors (partial safety and combination factors, coefficients regarding consequence classes, and so on). The load combinations can be created automatically in compliance with the combination expressions of the standard. The calculation can be performed according to the geometrically linear, second-order, or large deformation or as per the post-critical analysis. Optionally, you can define whether the internal forces should be related to the deformed or non-deformed structure.
The calculation is performed successively for each load step. Permanent (plastic) deformations of previous load steps are considered when calculating further load steps. This way, it is also possible to perform a calculation with a structure relief.
The loads of the individual steps are added up (depending on the signs) throughout the calculation process. You can freely select the method of analysis (linear static, second-order, large deformation, and postcritical analysis). Furthermore, the module manages the global calculation settings.