Complete dynamic calculation of lattice mobile crane during hoisting motion
Complete dynamic calculation of lattice mobile crane during hoisting motion
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DOI：
10.1016/j.mechmachtheory.2004.07.014
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发表时间：
2005-04
影响因子：
5.2
通讯作者：
Guangfu Sun;Michael Kleeberger;Jie Liu
中科院分区：
文献类型：
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作者：
Guangfu Sun;Michael Kleeberger;Jie Liu
本文采用我们在前期工作中发展的完全动力学计算方法，对格构式移动的起重机起升运动进行了动力学计算。基于该方法，将起重机结构有限元模型与驱动系统模型耦合。针对起重机起升装置的特点，建立了起重机起升钢丝绳系统的非线性有限元模型。吊臂系统被划分为多个梁单元。提升驱动系统采用液压二次控制建模。并以一台格构式移动的起重机为例进行了计算。从而更准确地反映了起升过程中起重机结构和电机输出的动态特性。研究了提升加速度、减速度和提升速度对提升机动态响应的影响。
Using the complete dynamic calculation method that was developed in our previous work, the dynamic calculation for hoisting motion of lattice mobile crane is carried out. Based on this method, the finite element model of crane structure will be coupled with the model of drive system. In consideration of properties of the crane hoisting device, new nonlinear finite element types for crane hoisting rope system are developed. The boom system is divided into Timoshenko beam elements. The hoisting drive system is modeled using hydraulic secondary control. The calculation has been realized for a lattice mobile crane. As a result, a more exact representation for dynamic behavior of crane structure and motor output during hoisting motion is achieved. The influence on dynamic response from hoisting acceleration, deceleration and hoisting speed has been studied.