Isothermal Mechanical Response of Shape Memory Polymer (SMP)-Based Hybrid Models and SMP-Composites

摘要

This paper has addressed the issue of isothermal uniaxial mechanical response of a shape memory polymer (SMP) in series and parallel arrangements with a spring, dashpot, a Maxwell solid and a Kelvin solid. It is shown analytically that four models - the SMP- spring series hybrid, SMP-spring parallel hybrid, SMP-Kelvin solid series hybrid and the SMP-Maxwell solid parallel hybrid - demonstrate an effective response analytically identical to that of a shape memory polymer. Explicit expressions for the creep strain and damping capacity are provided for the SMP-spring hybrids. Parametric studies for the SMP-spring series hybrid and the SMP-spring parallel hybrid are then used to suggest design strategies for SMP-based composite laminates and aligned fiber composites.