国产超薄铝蜂窝芯材在太阳翼基板的应用  

Application of Domestic Ultra-thin Aluminum Honeycomb Material on Solar Array Substrate

作　　者：管帅[1] 濮海玲[1] 孙伟 潘福明 高鸿[3] GUAN Shuai;PU Hailing;SUN Wei;PAN Fuming;GAO Hong(Beijing Institute of Spacecraft System Engineering,Beijing 100094;Defense Industry Program Evaluation Center of SASTIND,Beijing 100094;China Aerospace Components Engineering Center,Beijing 100094)

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]国家国防科技工业局军工项目审核中心,北京100094 [3]中国航天宇航元器件工程中心,北京100094

出　　处：《宇航材料工艺》2023年第2期37-41,共5页Aerospace Materials & Technology

摘　　要：针对太阳翼基板国产高性能低密度超薄铝蜂窝的自主可控需求,开展分析和试验,验证国产超薄铝蜂窝芯材应用于太阳翼基板的技术可行性。首先建立有限元模型进行准静态载荷分析,基板蜂窝芯子最大横向剪切应力为0.345 MPa,小于剪切强度0.36 MPa,满足强度裕度要求。其次,针对目前超薄蜂窝研制批次稳定性较差、剪切模量波动性较大的问题,对蜂窝剪切模量波动对基板力学性能的影响进行分析,结果表明,基板应力应变分布水平对剪切模量变化不敏感,蜂窝剪切模量降低50%后,基板蒙皮碳纤维最大应变减小3%,蜂窝芯子最大横向剪切应力减小9%,基板最大位移增加7%,可为蜂窝评估提供数据支撑。最后,开展基板缩比件和全尺寸基板的力、热试验,试验后基板未发生损伤。分析和试验结果表明:国产超薄铝蜂窝芯材性能满足要求,可在太阳翼基板上应用。Aiming at the requirements controllable of domestic high-performance and low-density ultra-thin aluminum honeycomb on solar array substrate,analysis and tests were conducted to verify the technical feasibility of the application of domestic ultra-thin aluminum honeycomb for the solar array substrate.First,quasi-static analysis was conducted with a finite element model.As a result,the maximum shear stress of honeycomb was 0.345 MPa,which was less than the shear strength 0.36 MPa and satisfied the strength margin requirements.Secondly,aiming at the problems of fluctuation of shear modulus in the development of ultra-thin honeycomb,the influence of honeycomb shear modulus fluctuation on the mechanical properties of the substrate was analyzed.The results show that the stress and strain distribution of the substrate is not sensitive to the change of shear modulus.After the honeycomb shear modulus is reduced by 50%,the maximum strain of carbon fiber decreases by 3%,the maximum shear stress of the honeycomb decreases by 9%,and the maximum displacement of the substrate increases by 7%,which can provide data support for cellular assessment.Finally,through the force and thermal tests of the base plate scaling piece and full size base plate,the solar array substrate is not damaged after the tests.The analysis and test results show that the performance of the domestic ultrathin aluminum honeycomb meets the requirements and can be used for solar array substrate requirements.

关 键 词：国产铝蜂窝芯 高性能低密度 太阳翼基板 分析验证 

分 类 号：TB33[一般工业技术—材料科学与工程]