杨嘉陵
冲击动力学、塑性动力学、飞行器抗冲撞和防护技术研究
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- 姓名:杨嘉陵
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博士生导师
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学科领域:
数理科学
- 研究兴趣:冲击动力学、塑性动力学、飞行器抗冲撞和防护技术研究
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杨嘉陵, J.L. Yang, F. Xi
International Journal of Impact Engineering 28 (2003) 761–781,-0001,():
-1年11月30日
A high-speed camera system is adopted to measure the instantaneous deformation of a free–free beam struck by a projectile at anycross-section along its span. The material in the experiment is made of hard aluminum (LY12R) which is less sensitive to the strain rate. A theoretical model is based on an elastic– plastic linear hardening material and the formulation is derived from the minimum principle in dynamics of elastic–plastic continua at finite deformation in association with a numerical technique. Some experimental results and theoretical predictions are given for the beam impacted at mid-span and 1/4 span, and attention is focused on the dynamic behavior of the beam in the early, transient stage of the response. r 2002 Elsevier Science Ltd. All rights reserved.
Free–free beam, Projectile, Elastic–plastic response, High-speed camera technique
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