【摘要】 为探索系泊状态下张紧型锚链的动力学行为,基于细长杆理论建立了该新型锚链的数学模型,并分别采用理论解析法和基于ANSYS的有限元法对该模型进行了验证。通过数值仿真得到了锚链在张紧力作用下的横向振动固有频率和振型,其数值解与理论解的误差在8%以内,该模型符合工程应用的要求。通过对锚链在0-200 Hz的扫频分析,得到了锚链最易发生的共振频率。理论计算与数值仿真结果表明:基于细长杆理论模型应用于船舶锚链振动特性分析具有较高的精度,可为避开与海浪等外界因素达到共振,提高漂浮结构的稳定性和锚链的初期设计提供理论依据。更多还原

【Abstract】 To explore the dynamic behavior of tension anchor under the state mooring,established a mathematical model of the new type anchor based on rod theory. The model is verified by theoretical analysis and finite element method based on ANSYS. Through the numerical simulation,the vibration natural frequency and vibration mode are obtained under the tensioning force in transverse,and the error between numerical solution and theoretical solution is less than 8%,which is in accordance with the requirements of engineering application. Through the analysis of the anchor in the frequency sweep of 0- 200 Hz,the resonance frequency is the most likely to be calculated. Theoretical calculation and numerical simulation results show that: the rod theory model has high precision,which is applied to the vibration analysis of anchor and to avoid the resonance with the external factors such as the waves,and improve the stability of the floating structure,and provide a theoretical basis for the initial design of anchor.更多还原