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Mechanical Components Branch -- Codes


Software distribution is limited to U.S. residents at companies, universities,
and organizations in the United States.  Sorry, we cannot send our codes
outside the USA.  We must have a "responsible person's" signature on a
Software Use Agreement to distribute any code.

DANST-PC (Dynamic ANalysis of Spur gear Transmissions)

DANST-PC is a computer program for static and dynamic analysis of spur gear systems.  The program can be used for parametric studies to predict the static transmission error, dynamic tooth load, dynamic tooth bending stress and other properties of spur gears as they are influenced by operating speed, torque, stiffness, damping, inertia, and tooth profile.  DANST-PC runs on personal computers (386 or later) 640 Kb memory, co-processor, VGA graphics, DOS or Windows operating system.

DANST-PC performs geometric modeling and dynamic analysis for low- or high- contact-ratio spur gears.  It can simulate gear systems with contact ratios ranging from one to three.  The program is based on a four-degree-of-freedom, lumped-mass model of a gear transmission. The model includes driving and driven gears, connecting shafts, motor, and load.  The equations of motion were derived from basic gear geometry and elementary vibration principles.  The dynamic solution is found by integrating the equations of motion.

Sample results from DANST-PC
Software Use Agreement (required) for a free copy of DANST-PC (US only)
Questions?  Contact Fred Oswald:  Fred.B.Oswald_AT_nasa.gov

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