According to the well-known models for rubberlike elasticity with strainstiffening effects, the unbounded strain energy is generated with the unlimitedly growin
The characteristics of stationary and non-stationary skew-gradient systems are studied. The skew-gradient representations of holonomic systems, Birkhoffian syst
Large active wing deformation is a significant way to generate high aerodynamic forces required in bat’s flapping flight. Besides the twisting, elementary morp