A Novel Microscopic Modeling Scheme for the Shape Memory Polymer Composites with respect to the Ambient Temperature

Abstract

This paper is aimed at studying the effective mechanical property of shape memory polymer composites (SMPC) reinforced with natural short fibers. To this end, a novel modeling scheme was presented. The SMPC was firstly equivalent to the composite laminates, and the natural short fibers are also subtly equivalent to the ellipsoidal inclusions distributed in the matrix materials periodically. Moreover, a represented volume element along laminate thickness can be easily chosen, and its elastic constants are accurately acquired by employing a proper microscopic mechanical model. Herein, the high-fidelity generalized method of cells, which represents a good ability in predicting the effective mechanical behaviors of composites, was used. On this basis, the classic laminate theory was improved to suitable for describing the elastic constants and failure strength the SMPC with respect to ambient temperature. Numerical results show a good consistency to the experimental data. Moreover, a higher ambient temperature tends to sharply decrease their final failure strength. It is also revealed that the presented modeling method shows a great potential in calculating the effectively mechanical property of the natural short fiber-reinforced composites.

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

“…Thermally affiliated actuative activities is a common, route of actuating SMPs, based on thermal energy transmission from an external environment to the thermally responsive SMP through conduction, convection, or thermal radiation in a directly connective mode. [ 53 ] Conventionally heat actuated SMPs need specific media like liquid, solid, and gas, to facilitate transferring the heat while attaining rapid actuation.…”

Construction, characterization, properties and multifunctional applications of stimuli-responsive shape memory polymeric nanoarchitectures: a review

“…[48] Electrically conducting polymeric nanoarchitectures are amongst most investigated SMPNs, and can be fabricated through the inclusion of graphene, carbon nanofibers (CNFs), carbon black (CB), carbon nano-paper, singlewalled carbon nanotubes (CNT), multi-wall carbon nanotubes (MWCNTs), and aligned conducting carbonoriented nanoreinforcements. [49] The major function of these nanoreinforcements involves the conversion of electrical current into heat via Joule effect, SMPs so-actuating.…”

Analytical and Experimental Analysis of the Shape Recovery Behavior of Continuous Fiber Reinforced Shape Memory Polymer

“…The model incorporates consideration of the complicated timedependent viscoelastic properties of the material which required sophisticated laboratory characterizations. Another study by Li, et al [12] introduced a novel approach by treating the SMPC as composite laminates, the reinforcement fibres were represented as periodic ellipsoidal inclusions distributed within the matrix. The study employed microscopic mechanical model along with high-fidelity generalized method and introduced them into the classical lamination theory.…”