基于虚拟样机技术的系泊系统分析与应用

2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering Pub Date : 2011-09-01 DOI:10.1109/CCIENG.2011.6008138

Xu Ci-jun, Xiao Xinhua, Jiang Chaoping

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引用次数: 0

摘要

针对系泊系统多系统耦合和非线性的特点，提出了一种基于虚拟样机技术的系泊系统动态响应仿真分析方法。将锚链视为悬链线，通过对锚链的静力分析得到系泊系统的初始条件。根据系泊系统的动力学分析，应用Morrison方程对系泊系统的数学分析模型进行简化，并用摄动法求解。根据不同条件下的实验数据拟合系泊系统为非线性系统，在ADAMS软件中将系泊系统简化为非线性弹簧约束，构建海洋平台虚拟样机模型。通过抓斗挖泥船仿真分析的应用实例，论证了基于虚拟样机技术进行动态分析的可行性。仿真结果表明，简化后的系泊系统模型为海洋平台的虚拟仿真提供了可靠的分析平台，降低了其动力性能理论研究的分析复杂度。

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Analysis and application of mooring system based on virtual prototype technology

A simulation method for dynamic response analysis of mooring system based on virtual prototype technology is presented according to its characteristics of multisystem coupling and nonlinearity. Anchor chain is regarded as catenary to get the initial conditions of mooring system through its static analysis. According to the dynamic analysis of mooring system, we apply Morrison equations to simplify the mathematic analysis model of mooring system, and solve it using perturbation method. Mooring system fits a nonlinear system according to the experiment data in different conditions, and is simplified to nonlinear spring constraints to construct a virtual prototype model of offshore platform in ADAMS software. Its feasibility of dynamic analysis based on virtual prototype technology is demonstrated by an application example showing the simulation analysis of grab dredger. The simulation results show that the simplified model of mooring system provides a reliable analysis platform for the virtual simulation of offshore platform, and decrease its analysis complexity of the theory research on dynamic performance.

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2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering

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