Dynamics Modeling and Simulation of Loader Working Device under Unloading Condition

摘要

Loader is a kind of typical engineering machinery, which plays a considerable role in the construction of the national infrastructure. As working device is a core component, which need do simulation and optimization. Because loader is composed of multisystem, how to conduct a unified simulation is a big issue. For this purpose, we introduced Dymola, which is a multidiscipline modeling software. In the Dymola, the mathematical model and its constraint function were set up by using multidisciplinary modeling language Modelica, then simulation of loader was carried out. In addition, retraction phenomenon of oil cylinder is researched, and we analyzed the reason of this phenomenon and optimized design.