Global vibration challenges for medium-speed engines.
The vibration level of medium-speed engines is critical to quality measures like durability and noise. In combination with engine mounted after treatment systems used to meet the EPA T4 emission standard it becomes more and more important and challenging to control the global and local vibrations. The durability of the power train components is not only dictated by the crank train excitation forces but can also be influenced by the structural component vibration behaviour. The objective of the global engine vibration analysis method presented in this paper is not to consider the dynamic loads as discrete static loads but to calculate the component durability under realistic time-dependent operating conditions including the dynamic structural behaviour. The hybrid analysis procedure uses the synergy of two widespread analysis types: Multi- Body-Analysis (MBA) and the Finite-Element-Analysis (FEA), to simulate the dynamic component loading but also the assembly, thermo-mechanical loads and local contact slipping/gapping effects. The simulation procedure has been verified in the past based on acceleration and strain gauge measurements at numerous engine components. The comparison between measurements and simulation results has shown that a good correlation of both the global deformation as well as the local strains can be achieved.
Sven Lauer Gonzalo Garcia Gorostiza Marc Bleijlevens Michael Kotwica Klaus Lierz Kevin Bailey
FEV GmbH,Germany FEV Inc.,USA GE Transportation Systems,USA
国际会议
上海
英文
1-12
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）