Master Thesis Project at CEVT

Title: Improving Complete Vehicle Model for Solidity Simulations

Subject: CAE Solidity

China Euro Vehicle Technology AB, CEVT, is a development centre for future cars of the Geely Group. CEVT covers all aspects of passenger car development – from the total architecture, powertrain and driveline components, to top hat engineering as well as the vehicles’ exterior design. The company is located in Gothenburg &Trollhättan and in HangzhouCixi in China.

Background

The body stiffness has a major impact on the solidity performance, e.g. Squeak&Rattle. The current requirement is describing the body stiffness with only one value (static torsional stiffness / first torsional mode). Due to a larger variety of new body designs, an improved and refined requirement is needed. This has been developed at CEVT and is based both on a complete vehicle model and the evaluation of the relative displacement in the diagonals of the closure openings.
In order to validate this new requirement setting, the capability of the complete vehicle simulation has to be increased. The trim representation and the damping value are two important parameters for the complete vehicle simulation using a modal transient analysis.
In order to find the adequate trim level, different trim variants have to be investigated. The damping value can be validated by a correlation in time domain using defined test tracks as load.

Scope

The overall aim of the thesis work is to improve the complete vehicle model by studying the trim level and the damping sensitivity regarding the solidity results.

Thesis overview

  • Mapping the trim areas for a complete vehicle
  • Defining different trim levels and studying their impact on solidity results
  • Preparing test scenario on complete vehicle by simulation
  • Defining different load cases based on Adams simulation
  • Finding suitable locations for accelerometers and strain gauges
  • Performing the test at Hällered
  • Correlation between test and simulation
  • Report and presentation

Prerequisites

  • Interested in structural dynamics
  • Knowledge in FEM and programing
  • Interested to further work in the automotive industry

The duration of the thesis work is 20 weeks.

Suitable Student Background

Master’s student in automotive/mechanical/mechatronics engineering. Please apply with CV and cover letter.

Starting dateNumber of students

January 20181

Contact persons

Jens Weber, 0729-888106,

Application:

Please apply for this thesis project through our web site:

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