For full release notes please contact your account manager and/or visit the Support Portal

MASTA 9 Contents and Summary

The 9 release of MASTA contains all of the capabilities from previous releases, various additional features and some enhancements to previously included features. Areas where you will find new or revised functionality include the following:

Gear Whine/Harmonic Excitation Analysis

  • New results available including airborne sound power for a full FE component.
  • Interface improvements to allow more flexibility in the results shown, including showing the response at multiple locations on one plot.
  • Export of operating deflection shapes in op2 file format that can directly be used in acoustic analysis packages.
  • Display of operating deflection shapes in 3D view.
  • Export kinetic or strain energy to raw text output.
  • Frequency range setting now shared across a loadcase and a design.

Shaft FE Meshing

  • A new ‘Create Shaft Mesh’ option is now available as part of the MA115 (Full FE Mesh Advanced Setup) to enable the generation of an FE mesh of a shaft directly within MASTA.

FE Component

  • Ability to create or import groups of element faces. These groups are available as result locations in Gear Whine/Harmonic Excitation analysis for surface based results.
  • The Acoustic Radiation Efficiency can be specified for an FE for use in the airborne sound power calculation in a Gear Whine/Harmonic Excitation analysis.
  • A new choice of Link Node Source, “Use Nodes from Another Link”, is available in Imported FE Mode’s Connections tab.
  • Statistics on selected nodes are now displayed in the Node Groups tab. In particular, when two nodes are selected the distance between and midpoint of their locations will be shown. If three nodes are selected, the radius and centre of the circle through them will be shown.
  • Ability to set a Mass Scaling Factor to quickly see the effects of a change in mass on, for example, NVH results. Similar to existing Stiffness Scaling Factor option on load cases.
  • Can specify if the FE model for a gear mesh contains teeth or not, affecting whether MASTA will, by default, only use surface nodes.

Colour Map Options

  • A number of new colour map options are now available that are used when displaying, e.g. gear contact charts and stress maps.

Bearing Clearance at Mounting Points

  • Improvements to the way rolling bearing mounting options are handled. If thermal expansion and/or fitting effects generate a clearance at a mounting point then this will be automatically included in the analysis.

Bearing Support Tolerances

  • The non-contacting diameter for a support tolerance is now user specifiable.

Line Selection in 2D Charts

  • A feature which allows selecting lines in 2d charts has been added.

Surface Selection in 3D charts

  • A feature which allows hiding/showing surfaces in 3D charts has been added.


  • DRIVA can now use the Basic LTCA model for the gear mesh stiffness.


  • Can now view energy input/output/loss and efficiency results over a duty cycle in System Deflection reports.

Updated SKF Bearing Data

  • Further bearing design details (element diameter, pitch circle diameter, and number of elements) for SKF catalogue bearings.

Flexible Spline Coupling

  • Rigid Connectors can be set up with an “Individual Contacts” stiffness option with specifiable contact stiffness, pressure angle, helix angle and normal clearance
  • Spacing and sizes of spline teeth can either be equal or specified per-tooth
  • Can be used with Detailed Spline functionality
  • FE Model can be automatically place nodes at each spline tooth, or on each flank of each tooth
  • Effects of spline contacts are accounted for in System Deflection mode

Specify Transverse Chamfer Angle

  • The Chamfer Angle in the Transverse Plane can now be specified.

Rough Cutter Creation Settings

  • This adds the ability to choose between the minimum, average and maximum tooth thickness for which to create a new cutter. Additionally, it is now possible to specify rough tip and root clearance factors.

Rough Hob Creation Enhancements

  • Now uses ½ pitch thickness to define the hob reference height.
  • Semi-topping blade now created if the Gear Design has a valid chamfer definition.

Additional Options in RUNNA

  • Users can now save numerical outputs into individual text files.
  • Users can now save all files written out from RUNNA into the .Runna file directory.

Concentric Group Selection and Movement

  • Concentric Groups can be selected in X,Y view.
  • Users can specify Drawing Order of Concentric Groups in 2D view.

CVT Model Improvements

  • Forces and resultant moments on sheaves can be modelled in system deflection.