强度与环境
彊度與環境
강도여배경
STRUCTURE & ENVIRONMENT ENGINEERING
2014年
3期
21-28
,共8页
水箱连接件%抗力学环境%模态分析%振动分析%强度分析
水箱連接件%抗力學環境%模態分析%振動分析%彊度分析
수상련접건%항역학배경%모태분석%진동분석%강도분석
water tank support%anti-mechanical environment%modal analysis%vibration analysis%strength analysis
针对目前航天器设备连接件抗力学环境能力研究存在分析内容不全面、能力评价不明确的问题，文章以航天器水箱连接件为例，利用考虑水箱设备影响的有限元简化模型，从基频模态、正弦振动、随机振动、动静惯性载荷下的强度以及紧固件受力五方面分析和评价了水箱连接件抗力学环境能力，并将分析结果与试验数据进行了对比。研究结果显示，水箱连接件强度、刚度较好，基频避开了航天器主频段，在发射段连接件振动响应不会对水箱设备造成影响、自身不会出现塑性变形和破坏。分析结果与试验数据一致性较好，简化模型能较真实反映实物特性。研究内容与方法为其他航天器设备连接件的设计与分析提供了借鉴。
針對目前航天器設備連接件抗力學環境能力研究存在分析內容不全麵、能力評價不明確的問題，文章以航天器水箱連接件為例，利用攷慮水箱設備影響的有限元簡化模型，從基頻模態、正絃振動、隨機振動、動靜慣性載荷下的彊度以及緊固件受力五方麵分析和評價瞭水箱連接件抗力學環境能力，併將分析結果與試驗數據進行瞭對比。研究結果顯示，水箱連接件彊度、剛度較好，基頻避開瞭航天器主頻段，在髮射段連接件振動響應不會對水箱設備造成影響、自身不會齣現塑性變形和破壞。分析結果與試驗數據一緻性較好，簡化模型能較真實反映實物特性。研究內容與方法為其他航天器設備連接件的設計與分析提供瞭藉鑒。
침대목전항천기설비련접건항역학배경능력연구존재분석내용불전면、능력평개불명학적문제，문장이항천기수상련접건위례，이용고필수상설비영향적유한원간화모형，종기빈모태、정현진동、수궤진동、동정관성재하하적강도이급긴고건수력오방면분석화평개료수상련접건항역학배경능력，병장분석결과여시험수거진행료대비。연구결과현시，수상련접건강도、강도교호，기빈피개료항천기주빈단，재발사단련접건진동향응불회대수상설비조성영향、자신불회출현소성변형화파배。분석결과여시험수거일치성교호，간화모형능교진실반영실물특성。연구내용여방법위기타항천기설비련접건적설계여분석제공료차감。
Currently, the research of anti-mechanical environmental capability for spacecraft equipment support exists the problem of incomprehensive analysis and unclear evaluation. Therefore, by using a simplified finite element model that considers the effects of water tank on support, the paper analyzes and evaluates the anti-mechanical environmental capabilities for spacecraft water tank support through five aspects, including modal, sinusoidal vibration response, random vibration response, strength and screw force in static-dynamic inertial load condition. Then, the analysis and experiment results are compared. The results show that, the fundamental frequency of the support assembly is far away with the value of the spacecraft natural frequency. Secondly, during the process of the spacecraft launch, the vibration response of the support assembly doesn’t affect the performance of the water tank and the support structure doesn’t deform plastically and destroy. Thirdly, the accuracy of the analysis results is verified through experimental data, and the mechanical properties of the support assembly are correctly reflected by the simplified finite element model. The technique and the procedure of research provide valuable reference for analyzing other spacecraft equipment supports.
