空投波浪测量浮标降落仿真与结构强度分析

Falling Simulation and Structural Strength Analysis of Air-launched Wave Measurement Buoy

为了更快、更安全地获得海浪参数,本文设计了一种无需降落伞的新型空投波浪测量浮标(Air-launched Wave Measurement Buoy,AWMB),阐述了其工作原理与关键设计。与普通空投浮标不同,该浮标依靠减速板达到安全降落的要求,结合有限元方法,通过计算减速板展开过程中所受到的不同阻力,获得减速板13种展开角度的阻力系数,并对数据进行3次曲线拟合,同时将展开机构视为曲柄滑块机构,从而计算出减速板展开速度,模拟浮标降落的运动状态。针对浮标降落中受到的空气阻力,校核主要受力结构的强度,对应用海洋固体材料的减速板结构进行改进,为该新型空投波浪测量浮标的降落安全性提供了理论依据。

In order to obtain wave parameters more quickly and safely,a new type of air-launched wave measurement buoy(AWMB)without parachute is designed,and its working principle and key design are described.Different from the common airdrop buoy,this buoy relies on the air-brake flap to achieve the requirements of safe landing.Combined with the finite element method,the resistance coefficient of 13 kinds of spreading angles of air-brake flap is obtained by calculating the different resistances in the process of spreading air-brake flap,and the data are fitted with a cubic curve.At the same time,the spreading mechanism is regarded as a crank slider mechanism,so as to calculate the spreading speed of air-brake flap and simulate the falling motion of the buoy.In view of the air resistance of the buoy in falling,the strength of the main stressed structure is checked,and the structure of the air-brake flap made of marine solid material is improved,which provides a theoretical basis for the landing safety of the new air-launched wave measuring buoy.