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Thesis in the field of vibration simulation of powertrain components - NVH from October 2024
Jetzt bewerbenStellenbeschreibung
The use of fiber-reinforced polymer materials in technical automotive applications is becoming increasingly important in times of rising acoustic, thermal and mechanical component requirements. Thanks to highly productive manufacturing processes, high damping capacity and low thermal conductivity, these materials are ideal for replacing existing metal applications with innovative development solutions.
Ever shorter development times for new vehicle concepts increasingly require a shift to earlier development phases of computational design to reduce long component and complete vehicle tests. This makes the use of simulation tools based on the finite element method (FEM) for calculating component behavior under real operating conditions all the more important. Plastics are generally reinforced by the use of fibers, so that the material-specific anisotropy must be taken into account to describe the deformation and stress behavior. In addition, they exhibit pronounced viscoelastic behavior, a dependence on the deformation rate and amplitude as well as the ambient conditions, such as temperature and relative humidity.
The aim of the work is the broadband validation of a material model for the modeling of viscoelastic material properties of short fiber reinforced plastics to assess the limits and potentials of the model. Based on this, the material model, consisting of preprocessing and user material, is to be further developed and optimized to ensure application at component level. The model will then be extensively validated using a powertrain component.
You will face these challenges:
Literature research on the state of the art regarding the modeling of viscoelastic material behavior of short fiber reinforced plastics using FEM software and UMATs
Understanding of the material model, the current state of development, the boundary conditions and the significance within the simulation
Extensive validation of the material model using simulations of the viscoelastic material behavior of various materials and boundary conditions
Optimization stages of the preprocessing script and the link to the user material
The final topic is determined in consultation with the university, you and us.
QualifikationenDegree program: SimTech, aerospace engineering, mechanical engineering, materials science or a comparable degree program
IT skills: MS-Office, previous knowledge of FEM software such as Abaqus or similar as well as programming languages such as Python, Matlab, FORTRAN or similar are desirable
Personal skills: Independent, team-oriented and communicative way of working
Other: Knowledge and experience in dealing with user materials (UMAT) is an advantage
Additional information:
Of course, we cannot do without formalities. Please apply online only and enclose a CV, current certificate of enrollment stating the semester of study, current transcript of records, relevant certificates (max. total size of attachments 5 MB) and mark your application documents as "relevant for this application" in the online form.
Further information on the recruitment criteria can be found"here".
Nationals from countries outside the European Economic Area should send their residence/work permit with their application.
We particularly welcome online applications from severely disabled persons and persons with equivalent disabilities. If you have any questions, you can also contact the site's representative for severely disabled employees at sbv-untertuerkheim@mercedes-benz.com, who will be happy to support you in the further application process after your application.
Please understand that we no longer accept paper applications and that there is no entitlement to return postage.
If you have any questions about the application process, please contact HR Services by e-mail at myhrservice@mercedes-benz.com or by phone: 0711/17-99000 (Monday to Friday between 10 a.m. - 12 p.m. and 1 p.m. - 3 p.m.).