Cables, Hoses and Flexible Structures

In this field of activity we deal with the modeling and simulation of highly deformable components and structures such as tyres, rubber bushings, air springs, cables and hoses. Different levels of modeling are covered, ranging from computationally expensive continuum mechanical FE models to simplified macroscopic models with high performance.

It is crucial to choose the 'optimal model complexity' according to the intended application. A model must contain sufficient details to display the relevant physical effects and yet fulfill effort requirements imposed by the development process.

In this context, new mathematical methods of model reduction are developed to describe the complex behavior of a structure (e.g. a tyre) in MBS context with rather few degrees of freedom. Commercial software like Abaqus or AmeSim is employed as well as in-house developments based on Matlab or C++.

Interactive Simulation of Cables and Hoses

Supply hoses in IPS Cable Simulation
© ITWM

Supply hoses in IPS Cable Simulation

Virtual assembly planning requires a fast and physically correct description of the behavior of cables and hoses like the ones used to operate robot arms.

In close cooperation with the "Fraunhofer-Chalmers Research Centre for Industrial Mathematics FCC", the software package IPS was developed allowing the interactive simulation of cables and hoses in real-time.

Example Projects

 

MAVO project EMMA-CC

The main objective of the project is the development of an enhanced digital human model (DHM) for ergonomic assessment of realistic dynamic motions.