Ответ:
Даже если программа не рассчитывает нелинейный материал, она может вычислить нелинейное алгебраическое уравнение в соответствии с методом второго порядка или анализом больших деформаций. Therefore, the design is not only nonlinear because of the geometrical material nonlinearities, but also because of the nonlinear physical analysis method.
The attached video shows that if the nonlinear behavior of the tension beam is not considered during the calculation, a linear analysis is displayed in load cases and a nonlinear analysis is displayed in load combinations. The reason for this is the nonlinear design according to second-order analysis in the load combination.
