This paper presents nonlinear finite element (FE) models to predict time- and temperature-dependent responses of shape memory polymer (SMP) foams in the large deformation regime. For first time, an A SMP foam constitutive model is implemented ABAQUS FE package with aid a VUMAT subroutine thermo-visco-plastic behaviors. phenomenological reformulated adopting multiplicative decomposition gradient...

Titanium and its alloys have become the most attractive implant materials due to their high corrosion resistance, excellent biocompatibility and relatively low elastic modulus. However, the current Ti materials used for implant applications exhibit much higher Young's modulus (50 ~ 120 GPa) than human bone (~30 GPa). This large mismatch in the elastic modulus between implant and human bone can ...

The emergence of soft electronics has led to the need for thermal management with deformable material. Recent efforts have focused on incorporating EGaIn microparticles (?101 µm) into elastomer forming a conductive composites. However, shape deformation and coalescence particles under mechanical stress often lead parasitic electrical conduction, imposing limitations its utilization in managemen...

Stress relaxation in the viscoelastic matrix influences evolution of thermal expansion and chemical shrinkage polymer composites. Its effects are included into a model generalized Maxwell type by means time-dependent coefficients. A homogenization strategy is proposed to obtain these coefficients composite from constituent behaviors, taking account effects. The homogenized behavior validated fu...

We investigate the magneto--elastic equilibrium of a neutron star crust and magnetic energy stored by elastic force. The solenoidal motion driven Lorentz force can be controlled force, so that conditions for field strength geometry are less restrictive. For models, minor part is balanced weak because irrotational dominant gravity pressure forces. Therefore, strong may confined in interior, rega...

the theoretical and experimental investigation on the thermo-mechanical properties of carbon nanotube (cnt) as reinforcer for oil and gas pipes has increasingly become a hot research area for many engineers and material scientists in recent years. this is mainly due to the advent of the new composite material systems that exhibit exotic material and mechanical properties as compared to the trad...