Physical Splines for Aerodynamic Modelling of Innovative Control Effectors

Multivariate simplex B-splines as a modelling technique provide more accurate models than standard polynomial models, which makes them an excellent modelling tool. Their coefficients, which are expressed in a barycentric coordinate system, are abstract. In this paper a physical transformation matrix is derived which can be applied to transform B...

Viscoplasticity for instabilities due to strain softening and strain-rate softening