Machine Elements and Dynamics

Machine Elements and Dynamics

Machine Elements was traditionally seen as basic mechanical parts, mostly used as the building blocks in the design of machines. Most of the classical elements such as shafts, bearings, gears, couplings, fasteners, springs, seals, belts, clutches, brakes and chains are standardized to common sizes. Nevertheless, there is still a strong need for improvements and optimization of such mechanical parts.


A modern vision of the Machine Elements discipline incorporates electronics and software elements, i.e. it incorporates basic mechanical, electrical and software components, each to be used as the building blocks in the design of smart machines. Consistent with this modern vision, the optimization of system dynamic and tribological properties can be carried out, for example, by simply optimizing feedback gains of controllers, easily implementable in practice by means of software.

As for fundamental problems in dynamics and vibrations, the group has significant experience in applying approximate mathematical analysis to tackle obstacles like nonlinearity, discontinuity or non-uniformity, to produce numerically / experimentally validated and typically rather simple general results. Current examples includes: High-frequency effects of strong nonlinearity; Coriolis-effects for vibrating fluid-conveying pipes; Vibration properties of spatially periodic beams; and macromechanical parametric amplification. 

In the field of fluid power, activities related to modeling, design and optimization of internal gear pumps with respect to tribological and flow characteristics have been initiated in cooperation with commercial partners. In the field of classical machine elements and tribology the research has been directed towards four main areas: Friction and wear in the hydrodynamic bearings of large diesel engines, friction and wear in wind turbine brakes, tribology and fatigue failure in rolling element bearings in wind turbines and the application of hydrodynamic bearings in wind turbines.

 

 

Contact

Jon Juel Thomsen
Associate professor, ph.d., dr.techn.
DTU Mechanical Engineering
+45 45 25 42 94

Contact

Ilmar Santos
Professor, Dr.-Ing. dr.techn. livre-docente
DTU Mechanical Engineering
+45 45 25 62 69
https://www.mek.dtu.dk/english/Sections/FAM/Research/Machine-Elements-and-Dynamics
4 APRIL 2020