MASTA is a single, integrated software system that provides a unique environment for the design and analysis of transmissions and axles.

Its functionality is tailored to match the needs of both Designers and Analysts. Leading-edge analysis capability is implemented in an easy-to-use software interface. The Analyst can obtain informative results quickly, whilst the Designer is provided with tools to rapidly create and manipulate new designs that permit the optimum solution to be found.

The major aspects of the Transmission’s performance are considered – component fatigue life, system deflections, NVH (dynamics), shift quality and gear manufacturing. All relevant data are brought together and presented to the engineer for rapid product development.

MASTA is typically licensed in two ways:

MASTA Software for Transmission Design and Analysis

Component definition:

	Easy shaft section manipulation
	Gear design sheet for macro- and micro-geometry
	Link between gear and hob
	Roller bearing manufacturers’ catalogues
	User-definable roller bearing internal details
	Creation of shaft sub-assemblies with user-definable datums

Creation of transmission assemblies:

	Rapid modelling of multiple shaft transmission systems in 3D
	Powerful tools for creating common transmission and axle configurations
	Pocket bearings and synchronised gears
	Differential bevel gear modelling
	Planetary gears
	Both 3D and 2D-layout views
	Multiple-loadcase duty cycle definition

Analysis

Shaft deflection, stress and fatigue life:

	Load dependent stiffness of rolling element bearings
	Gear and bearing life prediction
	Gear design and automatic optimisation routines
	Optimisation of gear design for a given hob
	Gear mesh misalignment
	Gear tooth contact and transmission error prediction
	Synchroniser sizing

A single interface for transmission-wide optimisation, including:

	Gear ratios
	Gear life
	Bearing life
	Synchroniser sizing (handball force)
	Centre distance
	Packaging

Include vehicle details:

	Engine details
	Clutch inertia
	Shift linkage ratio and efficiency
	Tyre rolling radius
	Target vehicle life
	Tools for rapid changes to centre distance
	Gear designs automatically fixed after a centre distance change
	Gear design in terms of life and distance to failure, not just safety factor
	Investigation of gear size against material and quality grade

Axle Modelling

Define shafts at arbitrary angles

Straight/Spiral Bevel Gears:

Design and rate with AGMA and Gleason

Hypoid Gears:

	Design with AGMA and Gleason
	Rate with Gleason

Bevel Differentials:

	Define split power
	Design and rate with AGMA and Gleason

Integration with FE

Integration with FEA for models of:

	Transmission casings
	Gear blank
	Thin-sectioned shafts
	Planet carriers

Detailed Analysis:

	Effect of casing stiffness on gear misalignment
	Detailed casing stress
	Planet carrier and annulus deformation
	Unequal load sharing of planetary gear systems

NVH Simulation:

	Driveline mode shape calculation
	Modal density plot
	Harmonic response plots

Gear Manufacturing

Tooling Database Definition:

Hobs

Shapers

Shavers

Simulation:

	Simulate shaving dynamics
	Ensure compatibility between hob/shaper and shaver Optimisation
	Optimise gear design for a database of hobs, shapers and shavers
	Maximise cutter life
	Rationalise cutter re-dressing

Optimisation:

	Optimise gear design for a database of hobs, shapers and shavers
	Maximise cutter life
	Rationalise cutter re-dressing