NDLI: Self Adapting Mechanical Step Bearings for Variations in Load

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Robert, L. Jackson
Copyright Year	2005
Abstract	As the application of small-scale and precision technologies increases, the need will grow for bearings which are able to provide precision control of their location. At the micro and nano-scale there is a need for new bearing technologies to reduce friction and wear, and provide precision control of bearing motion. This control can be provided by electronically controlled actuators and sensors, but then the system is dependant on the reliability of the electronics. This work uses numerical methods to research the design and behavior of self adapting smart step bearings. These step bearings are designed to change their surface profiles to achieve an optimal or controlled behavior, without the use electronics or external control. The bearing changes its profile to control the film height of the bearing to a near constant value for different loads. The result is a self adapting step bearing design that may be applied at multiple scales for use in a wide variety of machine components. The numerical simulation shows that the self adapting step bearing is able to autonomously adapt in real time to dynamic loads and maintain a desired film thickness with a relatively small amount of deviation. The self adapting step bearing also exhibits smaller dynamic responses to transient loads in comparison to a conventional static geometry step bearing.
Sponsorship	Tribology Division
Starting Page	279
Ending Page	287
Page Count	9
File Format	PDF
ISBN	0791842339
DOI	10.1115/IMECE2005-82713
e-ISBN	0791837696
Volume Number	Tribology
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Dynamic response Machine components Actuators Computer simulation Bearings Electronics Bearing design Nanoscale phenomena Film thickness Stress Transients (dynamics) Design Geometry Numerical analysis Friction Wear Sensors Reliability
Content Type	Text
Resource Type	Article

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