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MESYS Calculation Software

There are some settings available for the 3D-elastic parts.

3D-elastic-part-general

On page "General" the material, speed, temperature can be defined. The color for the part and the mesh can defined which is used in the standard 3D-geometry views.

3D-elastic-part-settings

On page "Settings" the number of mode shapes used for modal reduction can be defined. A larger number increases accuracy but required more memory and reduction time. Usually a value larger 20 should be used. The maximum frequency is shown on page "Information". This frequency should be larger than the maximum frequency that is of interest for the system.

An approximation order for elastic bearing rings and elastic gears can be defined here. The transverse approximation order for gears of 2 means a parabola is used for transverse deformations. A factor of 1 would only use a straight line. For gears with a large face width larger orders than 2 might be appropriate.

The reduction of the 3D-elastic parts lead only to mass and stiffness matrices. No gyroscopic matrix is considered. As approximation the polar inertia can be considered a gyroscopic matrix on the connected reduced nodes on the x-axis. The polar inertia will be distributed equally on all available nodes if the option"Consider gyroscopic matrix on connected nodes" is set.

The option "Consider bearing ring stiffness" will add the stiffness of the bearing rings to elastic bearings. If the ring is already included in the 3D-elastic part, this option should be disabled.