Preparation and Properties of Al2O3-SiC-SiAlON Composites
[1]LIU Xinhong,ZHOU Chaojie,ZHANG Lei.Preparation and Properties of Al2O3-SiC-SiAlON Composites[J].Journal of Zhengzhou University (Engineering Science),2012,33(01):46-50.[doi:10.3969/j.issn.1671-6833.2012.01.012]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 01
Page number:
46-50
Column:
Public date:
2012-01-10
- Title:
- Preparation and Properties of Al2O3-SiC-SiAlON Composites
- CLC:
- TQ175.1
- Abstract:
- A genetic algorithm based control design is proposed to control wind-induced vibration of long-spanroof in this study, An active tuned mass damper ( A’TMD) controller is designed using the proposed methodolo.gy. Wind-induced control theory is presented firstly, The root mean square of displacement and accelerationresponses are used as the evaluation criteria of control elcieney, Then procedures for control of wind-inducedvibration of long-span roofs based on genetic algorithms are given, Finally the method is applied to the controlof wind-induced responses of a long-span roof. The root mean square of displacement and acceleration responses is caleulated for some typical measuring points, And the results are compared with those obtained from other conlroller, The overall results of GA-based coniroller are accurate and efficient. The root mean square val.ues of displacement and acceleration of the sample points are reduced by 53,8% and 44.6% on average, respectively, GA-based controller reduces peak vertical displacement and acceleration of all sample points by65.7% and 56. 2%6 on average, respectively, GA-based control design methodology can obviously reducewind-induced vibration of long-span roofs, As an accurate and effective tool in wind-induced vibration control,the proposed method can provides some references for practical projects.
- References:
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Last Update:
1900-01-01