Time Efficient Simulation Of Surface Excited Guided Lamb Wave Propagation In Composites
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Time-efficient Simulation of Surface-excited Guided Lamb Wave Propagation in Composites
Author: Alexander Karmazin
language: en
Publisher: KIT Scientific Publishing
Release Date: 2014-05-22
The methods of time-efficient simulation of surface-excited wave propagation in plate-like multilayered composites are presented. The mathematical model of wave propagation in laminated plate based on the elasticity theory is transformed and then solved in wavenumber-frequency domain. The numerical methods for computation of inverse transform in time-space domain are developed and used for analysis of wave and energy propagation phenomena occurring in composite plates due to surface excitation.
An efficient solution procedure for elastohydrodynamic contact problems considering structural dynamics
Author: Schmidt, Jan Henrik
language: en
Publisher: KIT Scientific Publishing
Release Date: 2019-01-14
This work presents an efficient solution procedure for the elastohydrodynamic (EHD) contact problem considering structural dynamics. The contact bodies are modeled using reduced finite element models. Singly diagonal implicit Runge-Kutta (SDIRK) methods are used for adaptive time integration. The structural model is coupled with the nonlinear Reynolds Equation using a monolithic coupling approach. Finally, a reduced order model of the complete nonlinear coupled problem is constructed.
Lubricant transport towards tribocontact in capillary surface structures
Author: Klima, Joachim
language: en
Publisher: KIT Scientific Publishing
Release Date: 2018-11-13
To counter lubricant shortage at a frictional contact (starvation), lubrication liquids, e.g. oils, are actively transported from a distant location towards the undersupplied tribocontact. This is done via small channels or generally via structures cut into a flat surface. In this way one can use capillary force as a cheap and reliable driver of the lubricant flow. Numerical modeling and experiments show that this method can be considered a promising new option to enhance tribocontact operation.