Application of Flexible Multibody Systems in Modelica for the Simulation of Construction Machinery

Authors

  • Martin Starke Technical University Dresden
  • Robin Garbe Technical University Dresden
  • Volker Waurich Technical University Dresden
  • Frank Will Technical University Dresden

Abstract

Supporting structures of construction machines deform due to heavy process loads, vibration or lightweight design. This causes disturbances in forward kinematic sensing and calculation for end-effector positioning. Furthermore, it effects the transfer behaviour, which is relevant in vibration analysis. System simulations using Modelica are a feasible approach to analyse mechanics, hydraulics and process-interaction of mobile machines. In order to consider the effect of deformation, flexible bodies have to be modeled. This paper describes the workflow for modeling flexible bodies based on a model order reduction in an FEM-software. The reduced model is exported as a standardized SID-file by an open-source SID-generator. The SID-file is used to initialize a flexible body in the open-source Modelica library EMBSlib.
For the example of a tandem roller and a boom lift, the application of flexible bodies is presented.

Published

2021-02-16

How to Cite

1.
Starke M, Garbe R, Waurich V, Will F. Application of Flexible Multibody Systems in Modelica for the Simulation of Construction Machinery. MODPROD [Internet]. 2021 Feb. 16 [cited 2021 Nov. 29];26(15):15. Available from: https://wcc.ep.liu.se/index.php/MODPROD/article/view/737