某塔架回转平台力学特性仿真分析  

Mechanical Properties'Simulation Analysis of a Tower Slewing Platform

作　　者：李利群 黄凯 相有桓 刘汉滨 LI Liqun;HUANG Kai;XIANG Youhuan;LIU Hanbin(Unit 63729,Taiyuan,030031)

机构地区：[1]中国人民解放军63729部队,太原030031

出　　处：《导弹与航天运载技术（中英文）》2024年第4期57-63,共7页Missiles and Space Vehicles

摘　　要：为研究某塔架回转平台结构的安全性,按照实际尺寸和工况建立了回转平台的三维数值模型,仿真分析了结构的受力情况、不同风速下液压系统的压力裕度、升降平台数量的影响三方面与实际应用密切相关的问题。应用工况下,结构最大应力为223.98MPa,安全系数ns为1.58。按最不利的风载方向和迎风面积计算,许用风速下打开平台时,液压系统至少需要5.40MPa的压力,压力裕度为2.96。当升降平台数量达到理论最大值9层时,ns为1.35,满足要求。计算结果验证了回转平台主体结构的安全性,可以为回转平台的使用提供参考。To study the safety of a tower slewing platform structure,a three dimensional numerical model is established with actual sizes and operating conditions.The structural force,pressure margin of hydraulic system with different wind loads,and the influence of lift platforms'amount are researched which are concerned closely in use.In working condition,the maximum stress of structure is 223.98MPa,and the structure safety factor is 1.58.The pressure margin of hydraulic system is calculated with the worst wind direction and the maximum windward area.When the platform is opened with permitted wind speed,the hydraulic system pressure can not be lower than 5.40MPa,and the pressure margin is 2.96.The structure safety factor is 1.35 when the number of lift platforms is 9.According to the results of simulating calculation,the security of the slewing platform can be confirmed.The simulating model can provide a reference for the slewing platform's application.

关 键 词：数值计算 回转平台 风载荷 液压系统 轴承 

分 类 号：V553[航空宇航科学与技术—人机与环境工程]