MODSIM Workflow for Wind Energy

In this presentation, we will showcase some advantages that SIMULIA offers to the wind energy industry. In addition, we will focus on the utilization of multi-brand workflows that achieve unified modeling and simulation, MODSIM. We will show how this approach accelerates the design process, reduces risk, and ultimately leads to the creation of superior products.

Presenter: Steve MULSKI, Dassault Systèmes

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Key Applications of FEA and MBS in Wind Turbine Gearboxes

The development of gearboxes for wind turbines is more and more driven by load density, new drivetrain concepts and acoustic limits. The need to build a lightweight and still highly reliable gearbox raises new questions and higher requirements to the dimensioning and calculation of the gearbox components. To answer these questions, new cutting-edge simulation methods must be applied. The most important simulation methods are the finite element analysis (FEA) and the multi body simulation (MBS) for static and dynamic questions. The topics that are covered by these methods become more and more complex. On the one hand this leads to very specialized simulation models that make use of top-level features of the respective simulation methods. On the other hand, there are also topics that require the advantages of both methods, leading to growing intersections between FEA and MBS. Today questions like load sharing and load distribution can be answered by both methods. This leads to growing intersections between both simulation approaches. In future there maybe is something like a meta model that allows combined and platform-independent FEA and MBS simulation.

Presenter: Lars GEUKES, Flender GmbH

Tool chain for nonlinear modeling of elastomer engine mounts in multibody simulation

As NVH analysis gains importance in improving product quality, accurate models of each component in the transfer path are necessary. Elastomer models, like engine mounts, are complex due to their nonlinear, frequency- and amplitude-dependent properties. This contribution presents a tool chain for mapping engine mount properties in elastic multibody system simulation. The chain includes finite element modeling, experimental parameterization of material models, operating point-dependent modal reduction, and a preload dependence mapping method. Material parameters are identified using an optimization algorithm, and pre-stress-dependent modal reduction is performed to linearize the model. The presented tool chain reduces model error compared to common spring-damper representations of engine mounts. 

Presenters: Tobias RAPP & Sebastian BAHR, MSE - Institute for Machine Elements and Systems Engineering, RWTH Aachen University

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