scholarly journals Electromagnetic Field of Resonance Linear Motion Actuator and its Finite Element Analysis which Applied to Coal Mine

2011 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Xianyi Qian ◽  
Yiming He
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Coal Mine ◽  
Linear Motion ◽  
Element Analysis

Coal Mine Mobile Refuge Chamber with Square Cross Section Structure Finite Element Analysis

2012 ◽  
Vol 201-202 ◽  
pp. 308-311
Author(s):  
An Ning Zhang ◽  
Yu Ming Gu ◽  
Jin Jun Tai ◽  
Zhong Hui Yin ◽  
Xue Qun Fan ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Coal Mine ◽  
Close Relation ◽  
Life Safety ◽  
Element Analysis ◽  
Structure Strength ◽  
Chamber Model ◽  
Section Structure

Coal mine mobile refuge chamber, as the important equipment of underground refuge system, has a close relation to the life safety of the miners. At present, there are a lot of production refuge Chamber manufacturers, but they do not enjoy a unified standard in shape or size. This paper focuses on the establishment of the KJYF96/10 mobile refuge chamber model by Solidworks and adopts the structural finite element analysis by Simulation, drawing a conclusion of refuge chamber stress and displacement cloud chart. It is expected to offer an effective reference to improving the structure strength and reducing design costs.

scholarly journals Smart Materials for Silent Alarms

1998 ◽  
Vol 120 (02) ◽  
pp. 88-89 ◽  
Author(s):  
Mostafa Hedayatnia
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Electric Potential ◽  
Smart Materials ◽  
Medical Equipment ◽  
Consumer Products ◽  
Element Analysis ◽  
Vibration Performance

This article discusses the recent demand for silent alarms. If the device is kept close to a user’s body, such as on her\his wrist or in a back pocket, vibration is well suited for this type of alarm. The technology has been used for sometime in pagers, for example, and the field could someday be expanded to watches and a variety of medical equipment. The most common form of vibrating alert involves a motor that rotates an eccentric weight in an electromagnetic field. However, the smallest of these motors is still too large to fit in watches and other consumer products. Piezoceramic materials can produce motion by receiving electric potential across their polarized surfaces. Using finite-element analysis and optimization, engineers at Philips Corp. in Sunnyvale, Calif., have developed a miniature vibrator/piezo-bender that consumes only 8 milliamperes. In addition to optimization and actual shake tests, ergonomic research has been done to find the best way of improving the vibration performance of these silent alarms. Although the piezo-vibrator device shook strongly enough to get the wearer's attention in most environmental circumstances, that awareness improved greatly when vibrations were pulsed or interrupted.

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