Cables’ Modeling Methodology for Mechanical Simulations
Saruaho, Jarno (2022)
2022
All rights reserved. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2022052411725
https://urn.fi/URN:NBN:fi:amk-2022052411725
Tiivistelmä
In this thesis, a methodology for modeling high voltage and cooling cables, which are included in mechanical simulations for complete battery pack assemblies, was developed. The simulations in this thesis were performed with Altair OptiStruct and RADIOSS software. Only the static cases were considered.
The aim of this thesis was to develop a reliable and efficient methodology, which consists of physical testing of cables, development of the cable modeling method in a simulation environment, creation of a material model for the cable and verification of the physical test results.
Physical testing of the cables included uniaxial tensile, three-point bend and crush tests. Three-point bend and crush tests were reproduced in a simulation environment to verify the physical test data using the new modeling method for the cables.
The satisfying results were acquired from all the other physical tests except tensile tests. There were some problems in gripping the cables with self-tightening jaws. Despite that, the new modeling method turned out to be quite fast and easy to use. Reproducing the physical test results in simulation environment with the new modeling method went partially as wanted. There was deviation, but the FEA curve followed the physical test curves’ shapes nicely. This means that some refining is still needed for the methodology to make it meet the desired needs.
The aim of this thesis was to develop a reliable and efficient methodology, which consists of physical testing of cables, development of the cable modeling method in a simulation environment, creation of a material model for the cable and verification of the physical test results.
Physical testing of the cables included uniaxial tensile, three-point bend and crush tests. Three-point bend and crush tests were reproduced in a simulation environment to verify the physical test data using the new modeling method for the cables.
The satisfying results were acquired from all the other physical tests except tensile tests. There were some problems in gripping the cables with self-tightening jaws. Despite that, the new modeling method turned out to be quite fast and easy to use. Reproducing the physical test results in simulation environment with the new modeling method went partially as wanted. There was deviation, but the FEA curve followed the physical test curves’ shapes nicely. This means that some refining is still needed for the methodology to make it meet the desired needs.