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Single-Element Characterization of the LS-DYNA MAT54 Material Model
Research was completed to characterize the root behavior of the LS-DYNA MAT54 composite orthotropic material model. This primarily involved investigating the constitutive relations, ply failure (damage onset), ply deletion, damage factors, and element deletion. A single shell element under uniaxial tensile and compressive ...
Nonlinear Aeroelastic Behavior of Tail / Rudder Systems with Freeplay and Actuator Failure
This thesis discusses the development of numerical simulations implemented in MATLAB and of an experimental tail/rudder model for the investigation of the effects of non-linearities on control surface flutter of a three-degree of freedom typical section airfoil. Non-linearities investigated include a structural non-linearity ...