Institute

Body

Fields of Activity

  • Concept design
  • Simulation and testing
  • Benchmarking
  • Lightweight design
  • Passive safety
  • Durability

General information

ika offers its customers the following services in body engineering:

Concept development of vehicle body structures

Based on package data, ika develops innovative body structure concepts by using numerical optimisation tools in an early development phase. This enables the optimal use of the design space, even before building up the first CAD models. Right from the start, the close collaboration with the engineering teams of the chassis and the drivetrain departments guarantees the consideration of all essential boundary conditions in a coherent overall concept. The creative ideas, which are developed in interdisciplinary brainstorming sessions, set the basis for developing a convincing structural concept as a CAD model. Using numerical analysis tools, this model is refined subsequently to an innovative vehicle structure, which meets the defined requirements.

Numerical design, simulation and optimisation

The virtual development process of vehicle body structures at ika comprises the design, the numerical simulation and the optimisation on the level of components and modules as well as on full vehicle level. Based on the finite element method and on multi body simulations, analyses with regard to stiffness, strength, crashworthiness, pedestrian protection and vibration response are carried out. The simulation-based development process allows already in early development phases the verification of concepts in a very cost efficient way. ika has available many commercial CAE tools as well as powerful computing clusters for the fast execution of simulation runs.

Testing

By means of modular and multifunctional test benches ika offers an extensive testing programme from component tests during the development phase to the testing of complete vehicles according to legal requirements. Thanks to the close integration of the testing and simulation processes it is possible to execute validation tests for the verification of simulation results in a fast and flexible way. Numerous measuring devices and high speed video cameras are available for data acquisition. The main test benches in the field of body engineering are:

  • Crash test facility for component and full vehicle tests incl. a completely variable sled
  • Drop towers and pendulum test bench
  • Servohydralic test centre and intrusion rig
  • Free-motion impact test bench for pedestrian protection tests
  • Test rigs for structural stiffness and modal analysis
  • Testing devices for the examination of denting stiffness, denting resistance and damage caused by hail
  • Measuring devices for acquistion of 3D coordinates and surface reconstruction

Development of new methods in physical testing and numerical simulation

In order to extend the application fields of numerical simulation methods and to meet special customer requirements for physical testing, ika is not only dealing with the application, but also with the further development of the corresponding methods. This includes the auto-mation of simulation tasks and post processing procedures or the coupling of several solvers for multi-disciplinary optimisation. In the field of physical testing, ika has a strong com-petence in the development of body component tests. In order to refine such component test methods, the boundary conditions of the test set-up are adjusted in a numerical repre-sentation of the test, so that the simulated component behaviour corresponds with the behaviour computed in the full vehicle simulation. In the end, the realisation of the corre-sponding component test configuration on a test bench enables a significant cost reduction compared to complete vehicle tests, in particular for large test series.

Design and functional benchmarking

Design and functional benchmarking represents an important step in the development process of body components. In addition to design benchmarking for complete vehicles and body components with the examination of design principles, masses, materials and sheet thicknesses after component dismantling, ika offers the execution of functional bench-marking. In this process important component functions like torsion stiffness, bending stiffness, denting characteristics and crash behaviour are determined and analysed. If necessary, ika also develops and builds up special test benches for this purpose. The benchmarking analyses are completed by a clear and well structured documentation. Subsequently, it is possible to transfer the component dimensions in CAD data by means of digitising techniques for further numerical simulation or optimisation.



Have a look at our research projects here.

Laser welding of ultra high strength steels 22MnB5 and DP1000

Generation and validation of material properties in heat-affected zones (HAZ) for a closed simulation chain from temperature field simulation of the joining technology to structural load simulation

Read more ...
E-Jet

Concept study

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CFRP repair shop

Interactive repair shop of the future for CFRP based electric vehicles

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Lightweight Forging

Innovation Network for Technological Progress in Part, Process and Material Design for Forged Parts in Automotive Technology

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Braided FRP crash structures

Description of the crash behavior of fiber reinforced plastics based on braided performs

Read more ...

Address

Institute for Automotive Engineering (ika)
RWTH Aachen University

Steinbachstraße 7
52074 Aachen · Germany

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+49 241 80 25600
+49 241 80 22147

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