Mechanical Vibration Control using Smart Material: Dyanamic Vibration Absorber using Shape Memory Alloy Material - Softcover

Velu, Rajkumar

Softcover

ISBN 10: 3659265519 ISBN 13: 9783659265518

Publisher: LAP LAMBERT Academic Publishing, 2012

Synopsis

Dynamic Vibration Absorber (DVA) can be used an effective vibration control device. A (DVA) is essentially a secondary mass, attached to an original system via a spring and damper. The natural frequency of the DVA is tuned such that it coincides with the frequency of unwanted vibration in the original system. The Shape Memory Alloy (SMA) springs have got a range of stiffness varying from austenite state to martensitic state and this takes place in a cyclic manner due to repeated heating and cooling respectively. Their physical properties vary as a function of temperature. The stiffness of the spring can be controlled by varying the electrical current supplied to it. An active dynamic vibration absorber has been developed with the help of SMA springs to attenuate the vibration for a range of frequencies of the primary system. The design of SMA springs has been done. A shaker was used to generate the real-time vibration. In the experimental setup, an accelerometer is used to measure the vibration which is fed to the computer and simultaneously the SMA springs are actuated to change its stiffness which controls the vibration of the primary system and simulated using FEA

About this title

About the Author

Rajkumar Velu, PhD scholar (Mechanical) at AUT University, Auckland, New Zealand.He completed Master of Engineering (Engineering Design) at PSG college of Technology, Coimbatore, India.His area of Specialization in Vibration Engineering, Smart Materials, Finite Element Analysis. He received Scientific research award in Jordan and published journals

Edition details

• Publisher: LAP LAMBERT Academic Publishing
• Publication date: 2012
• Language: English
• ISBN 10: 3659265519
• ISBN 13: 9783659265518
• Binding: Paperback
• Number of pages: 108