A NOVEL DRIVING STRATEGY FOR DYNAMIC SIMULATION OF HOISTING ROPE WITH TIME-VARYING LENGTH
A NOVEL DRIVING STRATEGY FOR DYNAMIC SIMULATION OF HOISTING ROPE WITH TIME-VARYING LENGTH
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一种新颖的时变长度提升绳动态仿真驱动策略
DOI：
10.1142/s1793962313500098
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发表时间：
2013-09-01
影响因子：
1.2
通讯作者：
Wu, Ronghua
中科院分区：
文献类型：
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作者：
Wang, Jinjie;Cao, Guohua;Wu, Ronghua
改进了一种研究时变长度提升钢丝绳振动特性的仿真方法。通过先前在MSC中创建标记。亚当斯软件包，基于多自由度集中质量理论，建立了钢丝绳沿着螺旋缠绕的参数化模型。提出了一种新颖的驱动策略，即在驱动脚本控制下固定关节与角度传感器配合，以取代传统的接触力。以凿井绞车机构中的提升钢丝绳为研究对象，考虑复杂的边界条件，建立了等效离散化模型。采用拉格朗日方程建立了提升系统的运动微分方程，并采用龙格-库塔法进行了数值求解。仿真结果表明，水平摆动在原则上得到了减小，800根离散绳的仿真时间不超过61 min。因此，这种可行的策略既能保证精度，又能提高仿真效率和稳定性。亚当斯仿真输出的运动曲线与数值仿真结果吻合较好，验证了数值模型和驱动策略的正确性。
A simulation method for investigating the vibration behavior of hoisting rope with time-varying length is improved. By previously creating markers in the MSC. ADAMS software package, the parametric model of the rope wound along helix is established based on the concentrated-mass theory with multi-degree of freedom (multi-DOF). A novel driving strategy, cooperating fixed joints with angle sensors under the control of driving script, is proposed to substitute conventional contact force. Researching on the hoisting rope in the sinking winch mechanism, an equivalent discretization model is obtained with complicated boundary conditions considered. The differential equations of motion of the hoisting system are formulated employing Lagrange's equation and numerically solved using Runge-Kutta method. The simulation indicates that the horizontal swing is decreased in principle and the simulation with 800 discrete ropes is not performed more than 61min. Therefore, this feasible strategy could not only guarantee the accuracy but also promote simulation efficiency and stability. The motion curves exported from ADAMS simulation coincide with one in numerical simulation, which validates both the numerical model and the driving strategy.