Mechanical Engineering Seminar Series: Modeling Nonlinear Viscoelastic Response of Polymers

Polymers are appealing for many flexible and lightweight structures since they can be easily fabricated and deformed into various shapes. One of the main characteristics of polymers is their viscoelastic behavior; thus, it might be necessary to incorporate the viscoelastic response in analyzing performance of structures made of polymers. Our aim is to understand the viscoelastic response of polymers through the development of constitutive material models. We also investigate the effect of non-mechanical stimuli, such as thermal, light activation, moisture sorption, on the overall viscoelastic responses of polymers. Several examples of analyses of viscoelastic structures, i.e., biodegradable polymeric stents, folding of thin sheets under thermal and electric field inputs, and polymeric sandwich composites, will be shown.

Anastasia Muliana is a Professor and Cain Faculty Fellow in the Department of Mechanical Engineering at Texas A&M University. She received master and PhD degrees from Georgia Institute of Technology in 1999 and 2004, respectively. Her research interests include time-dependent modeling of polymers and composite materials, coupled mechanical and transport analyses in composites and smart structures, multi-scale modeling and large-scale nonlinear structural analysis, numerical methods. She is a recipient of NSF CAREER Award 2005, AFOSR YIP 2008, and Presidential Early Career Award for Scientists and Engineers PECASE 2009. She is a fellow of American Society of Mechanical Engineers (ASME).


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