A major bottleneck in the virtual design of off-road vehicles moving soil, like wheel loaders, bulldozers, excavators, ploughs, etc., is the modelling of the interaction between the soil or aggregate material and the vehicle attachment such as a bucket. This interaction is a critical performance attribute of the vehicle since it's tightly related to operation effectiveness, operator comfort and machine endurance. This paper discusses ongoing work to simulate realistic load conditions by coupling the multibody simulation package LMS Virtual.Lab Motion to DEMeter, a simulation tool for granular dynamics. A case study of a wheel loader picking up rock pile is presented. The approach taken consists of a cosimulation between both softwares. The dynamics of the vehicle is computed by Virtual.Lab Motion, which passes the position and orientation of the bucket and the associated velocities to DEMeter, which computes the dynamics of the rock particles and returns the resulting soil-bucket contact force to Virtual.Lab Motion.
Towards realistic prediction of soil-bucket interaction. Cosimulation between LMS Virtual.Lab Motion and DEMeter
2010
10 Seiten, 8 Bilder, 9 Quellen
Conference paper
English
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