Данный контрольный пример основан на контрольном примере 0122. A single-mass system without damping is subjected to an axial loading force. An ideal elastic-plastic material with characteristics is assumed. Determine the time course of the end-point deflection, velocity, and acceleration.
- 000119
- Расчет
- RFEM 5
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- RSTAB 8
- RF-DYNAM Pro | Natural Vibrations 5
- RF-DYNAM Pro | Forced Vibrations 5
- RF-DYNAM Pro | Equivalent Loads 5
- RF-DYNAM Pro | Nonlinear Time History 5 (нелинейное изменение во времени)
- DYNAM Pro | Natural Vibrations 8 (собственные колебания)
- DYNAM Pro | Equivalent Loads (Эквивалентные нагрузки) 8
- DYNAM Pro | Nonlinear Time History 8
Сначала прогибается система с одной массой, с допуском и двумя пружинами. Determine the natural oscillations of the system - deflection, velocity, and acceleration time course.
На систему единичных масс действует сила нагрузки. Determine the deflection of the system.
A cantilever beam with an I-beam cross-section of length L is defined. The beam has five mass points with masses m acting in the X-direction. Собственный вес не учитывается. The frequencies, mode shapes, and equivalent loads of this 5-DOF system are analytically calculated and compared with the results from RSTAB and RFEM.
Двухэтажная однопролетная каркасная конструкция подвержена сейсмической нагрузке. The modulus of elasticity and cross‑section of the frame beams are much larger than those of the columns, so the beams can be considered rigid. The elastic response spectrum is given by the standard SIA 261/1:2003. Neglecting self-weight and assuming the lumped masses are at the floor levels, determine the natural frequencies of the structure. For each frequency obtained, specify the standardized displacements of the floors as well as equivalent forces generated using the elastic response spectrum according to the standard SIA 261/1.2003.
Данный пример служит для демонстрации ограничения диафрагмы. The application is shown on a two-story structure. The structure is loaded by means of lateral forces according to Figure 1. Determine the maximum deflection of the structure ux in the direction of the loading forces using both the diaphragm constraint and the plate model of the floor.
Система двух масс состоит из двух стержней и двух масс, представленных соответствующими моментами инерции, сосредоточенными на заданном расстоянии в качестве узловых масс. The left shaft is fixed, and the right mass is free. Neglecting the self‑weight of the shafts, determine the torsional natural frequencies of the system.
Осциллятор двух масс состоит из двух линейных пружин и масс, сосредоточенных в узлах. The self-weight of the springs is neglected. Determine the natural frequencies of the system.