Similarity and singularity in adhesive elastohydrodynamic touchdown

Similarity and singularity in adhesive elastohydrodynamic touchdown

Elements of Similarity and Singularity

Hydrodynamic and Elastohydrodynamic Lubrication

Contents 1. Introduction 2. Stress-induced lubricant degradation 3. Basic equations governing the fluid elastohydrodynamic lubrication (EHL) of line and point contacts 3.1. Equations of fluid motion 3.2. Contact surface displacements in line and point lubricated contacts 4. Steady isothermal EHL problems for lightly loaded non-conformal line contacts 5. Steady isothermal EHL problems for heavil...

Automated Aircraft Touchdown

In this paper, we explore the challenging and important problem of automated aircraft landing. We created a simulator to be able to perform online experiments in various conditions including stormy weather and starting from off-trajectory starting points. We experiment with a wide range of techniques to learn the optimal flight policy including reinforcement learning, Monte Carlo based dynamic ...

Dynamics and Touchdown in Electrostatic MEMS

Perhaps the most widely known nonlinear phenomena in nanoand microelectromechanical systems is the “pull-in” or “jump-to-contact” instability. In this instability, when applied voltages are increased beyond a certain critical voltage there is no longer a steady-state configuration of the device where mechanical members remain separate. This instability affects the design of many devices. It may...