New in MASTA 8

The next generation in commercial grade CAE design, analysis and optimisation for mechanical transmissions is now available.

Below summarizes the major updates in the latest release of MASTA.

For further details get in touch.

Major new and enhanced functionality includes:

  • Comprehensive update of SKF bearings, in collaboration with SKF
  • New functionality for analysing the NVH Response to Electric Machines
  • Powerful Design Space Search functionality to explore gear macro geometry design space considering multiple design targets
  • A new interface with KIMoS, in collaboration with Klingelnberg, for bevel and hypoid gear design to manufacture
  • A new System Optimisation tool
  • The ability to Undo and Redo design actions and analysis options
  • Various other enhancements to previously existing functionality

NVH Response to Electric Machine

A new module that facilitates the design and analysis of models including electric machines and specifically the analysis of the dynamic response to electric machine excitation’s.

Functionality in MASTA allows you to:

  •  Include electric machine as a power source for a MASTA model
  •  Model and import the stator and housing via an Imported FE component. In general, electric machine stators are not simple both geometrically and materially so representation via imported FE is important for accurate results
  • Import speed dependant dynamic load data, including torque ripple and stator tooth loads, from an electric machine modelling program (e.g. ANSYS Maxwell, JMAG) or test data
  • Analyse the response of the model to the excitation’s from the electric machine, transmission error at gear meshes and any other user defined harmonic loads in the same analysis

Macro Geometry Design Space Search

Significant new functionality available under the Cylindrical Gear Macro Geometry Optimisation module facilitates the optimisation of gear geometry via a design space search. The functionality enables you to:
  • Vary multiple macro geometry parameters
  • Compare thousands of designs
  • Automatically discard designs to that don’t meet custom criteria
  • View results in fully customisable scatter and bar charts

KIMoS Interface

A new module has been developed enables you to import gear macro geometry data into a MASTA full system model via a Klingelnberg KIMoS XML file which can then be used to calculate deflections of system including gear misalignment’s which can then be used to run Loaded Tooth Contact analyses in KIMos. Results from KIMoS LTCA can be used as input into MASTA Gear Whine Analysis. The full workflow of the interface allows you to:

  • Design bevel and hypoid gears using KIMoS
  • Import gear macro geometry data into a MASTA full system model via a KIMoS XML file
  • Run System Deflection analyses in MASTA to calculate the deflections of the system under specified loads including bevel and hypoid gear misalignments
  • Export misalignment data back to KIMoS via a KIMoS XML file
  • Design, micro geometry/machine settings taking into account these misalignments in KIMoS and run Loaded Tooth Contact analyses
  • Import calculated tooth contact results including loaded transmission error back to MASTA for inclusion as input to MASTA’s Gear Whine Analysis
  • Calculate the response of the system level model in MASTA to excitation by the transmission error as calculated from KIMoS

Undo-Redo Functionality

Significant undo-redo functionality is now available in the following areas:

  • Values in the properties grid
  • Values in the Input Editors
  • Shaft profile via the 2D view or Editor table
  • Add/remove design components and load cases
  • Connecting and positioning components

SKF Bearing Database

In collaboration with SKF, the bearing database in MASTA now includes a fully revised and updated SKF bearing catalogue. Data that is supplied by SKF directly is clearly indicated and a link is provided to go directly to the SKF website for additional information including, for example, CAD data.

More Features

Hypoid Gear Design

It is now possible to specify non-90° shaft angles when working with hypoid gears.

Parametric Study Tool

The previous Parametric Study Tool functionality has been enhanced and it is now possible to:

  • Change design properties
  • Log results (instead of saving the entire analysis)
  • Save reports at each step
  • Save the design at each step
  • Run the tool with Duty Cycles in addition to Load Cases

Imported FE Components

For an Imported FE Component, the particular FE used can now be specified on a load case. When replacing a gear with an Imported FE Component you can now have multiple nodes across the face width of the gear.

Bearing Rib Contact Charts

MASTA now includes calculation of rib stresses for cylindrical roller bearings and display of analysis results via report charts.

  • Elements of cylindrical roller bearings can now be defined as having either domed or flat ends
  • Ribs can now have an offset angle
  • Element geometry in 2D drawings is more accurate, and will now include the element corner radius and any roller end radius
  • The 2D View in System Deflection gives an indication of where rib contact stress is predicted
  • Detailed rib stress distribution calculation results are available in the reports for a bearing

Normal Thickness Specification of Cylindrical Shaper

When specifying the properties of a Shaper in the Cylindrical Shaper Database, there is now the option to specify the Tooth Thickness via Editors in the same way as is available for Gear Macro Geometry specification:

  • Over Balls
  • Chordal Span
  • Profile Shift Coefficient
  • Profile Shift
  • Normal Thickness

Micro Geometry Specification

Previously containing all properties in a single editor table, the default editors have been redesigned to facilitate geometry specification by including separate tabs for Lead Relief, Profile Relied and Bias. Within each of these, the properties are further split into logical groups. Charts are provided for quick confirmation of the defined.

Full release notes are available on request or from the SMT Portal.