RSTAB 8 | DYNAM Pro – Natural Vibrations

Add-on Module for RSTAB 8

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DYNAM Pro – Natural Vibrations Add-on Module for RSTAB 8

The DYNAM Pro – Natural Vibrations add‑on module allow you to quickly and easily analyze natural frequencies and mode shapes of member, surface, and solid models.

You can import all required input values directly from RSTAB. Powerful eigenvalue solvers (such as Lanczos, subspace iteration, and so on) are available to determine up to 9,999 eigenvalues.

Analysis of Natural Vibrations

Total items: 4

Determination of Natural Frequencies and Mode Shapes

Resulting Modular Analysis of Reinforced Concrete Structure

RF-/DYNAM Pro - Natural Vibrations | Features

Automatic consideration of masses from self-weight
Direct import of masses from load cases or load combinations
Optional definition of additional masses (nodal, linear, surface masses, as well as inertia masses)
Combination of masses in different mass cases and mass combinations
Preset combination coefficients according to EC 8
Optional import of normal force distributions (in order to consider prestress, for example)
Stiffness modification (for example, deactivated members or stiffnesses can be imported from RF-/CONCRETE)
Consideration of failed supports or members
Definition of several natural vibration cases (for example, to analyze different masses or stiffness modifications)
Results of eigenvalue, angular frequency, natural frequency, and period
Determination of mode shapes and masses in nodes or FE mesh points
Results of modal masses, effective modal masses, and modal mass factors
Visualization and animation of mode shapes
Various scaling options for mode shapes
Documentation of numerical and graphical results in the printout report

RF-/DYNAM Pro - Natural Vibrations | Input

Input windows require all data necessary for determination of natural frequencies, such as mass shapes and eigenvalue solvers.

The RF-/DYNAM Pro - Natural Vibrations add-on module determines the lowest eigenvalues of the structure. The number of eigenvalues can be adjusted. Masses are directly imported from load cases or load combinations (with optional consideration of total masses or a load component in the direction of gravity).

Additional masses can be defined manually at nodes, lines, members, or surfaces. Furthermore, it is possible to control the stiffness matrix by importing normal forces or stiffness modifications of a load case or combination.

RF-/DYNAM Pro - Natural Vibrations | Calculation

The RF-DYNAM Pro - Natural Vibrations module of RFEM provides four powerful eigenvalue solvers:*Root of characteristic polynomial

Method by Lanczos
Subspace Iteration
ICG iteration method (Incomplete Conjugate Gradient)

The DYNAM Pro - Natural Vibrations module for RSTAB provides two eigenvalue solvers:

Subspace Iteration
Shifted inverse power method

The selection of the eigenvalue solver depends primarily on the size of the model.

Natural Vibration as Graphical Result Display in RFEM

RF-/DYNAM Pro - Natural Vibrations | Results

After the calculation, the eigenvalues, natural frequencies, and natural periods are listed. These result windows are integrated in the main program RFEM/RSTAB. The mode shapes of the structure are included in tables and can be displayed graphically or as an animation.

All result tables and graphics are part of the RFEM/RSTAB printout report. This way, clearly arranged documentation is ensured. Furthermore, it is possible to export the tables to MS Excel.

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1,210.00 USD

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Total Amount 1,210.00 USD

The price is valid for United States.

First Steps with RSTAB 8

This page provides some useful hints and tips for users who are not familiar with RSTAB to facilitate your introduction to our programs.

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Structural Analysis Models to Download

If you are looking for models to practice on or as inspiration for your projects, you've come to the right place. We provide you with a vast number of structural analysis models to download, such as RFEM, RSTAB, or RWIND files.

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