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Abstract: The flexible multi-body dynamic
theory is applied into the dynamic characters analysis of 4-arms
concrete pump truck arms. The arms are thought as flexible ones for
simulation, based on which the flexible multi-body dynamic equation for
arm system is built by Lagrange equation and virtual work theory. The equation is deduced and numerically solved to analyze the movement situation of each arm. With a dynamic simulation software, a rigid model and a flexible model are both built for the arms. These two models are simulated with the same driving moment, and the deformation curves of each model and the angular velocity curve of the 4th arm are analyzed and compared. The result shows that it is necessary to consider the flexible deformation when studying the arm system of the light and long arm concrete pump truck. At the same time, the mathematic model can support the study for automatic casting.
Key words: Concrete pump truck Elastic distortion Flexible multi-body dynamics Arm
CLC No:
TU646
国家自然科学基金(50075015)和辽宁工程技术大学大型工矿装备实验研究中心基金(F05001)资助项目. Received 20061120,
received
in
revised
form
20070626
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