海上风力机防护装置径高比影响研究

In order to analyze the influence of the diameter-to-height ratio on the performance of the protective device when the offshore wind turbine is impacted by the ship,this paper uses ANSYS/LS-DYNA software to study the anti-collision performance and deformation mode of Ogden,Mooney-Rivlin constitutive rubber and aluminum foam protective device with different diameter-to-height ratios. The results show that with the increase of the ratio of diameter to height,the change of the maximum depression depth of the two constitutive rubber devices shows an opposite trend. When the diameter-height ratio is 2.061,the maximum depression depth of the foam aluminum device is reduced by 60.5%,the maximum contact force of the foam aluminum material is increased by 28.05%,and the maximum contact force of the Ogden material and Mooney-Rivlin material rubber protection device is reduced by 27.9% and 14.5%. The protective effect of the protective device is affected by the plastic deformation caused by local depression and overall bending. With the change of the diameter-height ratio,the change of the deformation form of the device affects the crashworthiness of the protective device with different constitutive materials. When the diameter-height ratio is less than 1.5 and the wall thickness is less than 3 m,the deformation of the protective device is mainly local depression. When the diameter-height ratio is greater than 1.5 and the thickness is greater than 5 m,the protective device mainly produces bending deformation.