【摘要】：采用樹脂基復(fù)合材料代替鋁合金材料研制反射器滿足天線反射器減重要求,并建立反射器3D模型,通過有限元軟件分別對(duì)鋁合金以及復(fù)合材料反射器的模態(tài)進(jìn)行分析。結(jié)果表明:在保持相同體積的條件下,復(fù)合材料反射器基頻比鋁合金反射器高出35.23%,減輕41.2%;為了保證星載反射器在服役環(huán)境中的精度,對(duì)兩種材料反射器在-180~+80℃的熱變形進(jìn)行仿真。結(jié)果顯示:采用[0/45/-45/90]2S鋪層設(shè)計(jì)的反射器熱變形量比鋁合金反射器低94.25%;采用模壓工藝研制的復(fù)合材料反射器型面精度為0.027 mm,滿足使用要求,并且在服役環(huán)境下,復(fù)合材料型面精度穩(wěn)定性優(yōu)于鋁合金反射器。
[Abstract]:The reflector is developed by using resin matrix composite material instead of aluminum alloy material to meet the weight loss requirements of antenna reflector, and the 3D model of reflector is established. The modes of aluminum alloy and composite reflector are analyzed by finite element software. The results show that the fundamental frequency of the composite reflector is 35.23% higher than that of the aluminum alloy reflector and 41.2% lower than that of the aluminum alloy reflector under the same volume. In order to ensure the accuracy of the space-borne reflector in the service environment, the thermal deformation of the two kinds of material reflector at-180 ~ 80 鈩，

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