美国科罗拉多大学齐航副教授学术讲座
讲座名称：
美国科罗拉多大学齐航副教授学术讲座
讲座时间：
2012-08-28
讲座人：
齐航
形式：
校区：
兴庆校区
实践学分：
讲座内容：
应航天航空学院王铁军教授邀请，美国科罗拉多大学齐航副教授将来我校进行学术交流并做学术报告。
讲座时间： 2012年8月28日（星期二）下午 16：00
讲座地点： 教一楼南208会议室
讲座内容：
Reconfigurable multifunctional structures, which allow combined changes of shape, functionality and mechanical properties on demand, require new adaptive materials and novel chemistry that permit reversible modulation of mechanical properties in effective manner. Shape memory polymers (SMPs) are a unique class of smart materials that can “memorize” their permanent (equilibrium) shape, be temporarily fixed in non-equilibrium shapes, and recover their permanent shape on command when exposed to heat, light, or other external stimuli. Because polymers are intrinsically soft, SMPs allow much larger shape change than other smart materials, such as shape memory alloys and piezoelectric materials. This makes them good candidates for the applications of reconfigurable multifunctional structures. In this presentation, we introduce some recent exciting development in SMPs, such as amorphous polymer based one-way SMP, semi-crystalline polymer based two-way SMP, and light activated polymers. We will then focus on the physics and mechanics underlying the actuation of these materials and emphasize on developing physics-based large deformation constitutive models and applying these models to novel design of smart polymers applications. Finally, future works on developing material models for these materials are discussed.
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