pps proceeding - Abstract Preview
pps proceeding
Symposium: G10 - Modeling and simulation
Oral Presentation
 
 

Knowledge-based Support for the Designer regarding Virtual Lifetime Prognosis of Elastomer Components

Andrae Rene (1)*, Rocker Simon (2), Pluhnau Robin (3), Nagarajah Arun (4), Schiffers Reinhard (5)

(1) University of Duisburg-Essen, IPE CAE - Duisburg - Germany, (2) University of Duisburg-Essen, IPE KKM - Duisburg - Germany, (3) University of Duisburg-Essen, IPE PEP-DM - Duisburg - Germany, (4) University of Duisburg-Essen IPE PEP-DM - Duisburg - Germany, (5) University of Duisburg-Essen IPE KKM - Duisburg - Germany

Elastomer components are used in many areas of mechanical engineering and plant construction. Due to their unique properties, they are excellently suited for solving vibration-engineering problems. The increasing use of elastomer components in mobile and highly dynamic systems requires new methods in the field of lifetime prognosis for elastomers. Compared to metals, the simulation of elastomers is a (still) relatively new field of research. A non-linear damage accumulation model (nlSAM) was developed at the Chair of Construction and Plastics Machinery at the University of Duisburg-Essen. This enables the calculation of lifetimes of dynamically stressed elastomer components depending on a wide variety of mechanical stress situations and sequences. This paper extends the existing nlSAM for the lifetime prognosis of dynamically loaded elastomer components based on local material stresses. This enables the calculation of lifetimes of dynamically stressed elastomer components depending on a wide variety of mechanical stress situations and sequences. By calculating the material stresses with the Finite Element Method (FEM) it is possible to predict the lifetimes for similar geometries after calibration of the non-linear damage accumulation model. Non-switchable elastomeric couplings serve as examination components. In this paper are described the associated system design and the ensuing software development. The entire workflow is divided into two main areas: the calibration of the material model and the lifetime prognosis of a component. As the material model is used the Yeoh model. In addition to the transfer of the parameters from the FE simulation, further functions, control and monitoring of the coupled numerical and analytical calculation process have been integrated. The validation was carried out by comparing the results of the simulation and laboratory tests.