CN113459602A - 一种轻质波纹夹芯型复合材料承力筒 - Google Patents

一种轻质波纹夹芯型复合材料承力筒 Download PDF

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CN113459602A
CN113459602A CN202110767591.5A CN202110767591A CN113459602A CN 113459602 A CN113459602 A CN 113459602A CN 202110767591 A CN202110767591 A CN 202110767591A CN 113459602 A CN113459602 A CN 113459602A
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蔡毅
韩璟圳
唐小军
程沐铮
刘师玮
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Hebei Huanyu Power Telecommunications Engineering Co ltd
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Abstract

本发明公开了一种轻质波纹夹芯型复合材料承力筒，包括外面板、内面板和波纹夹芯，所述外面板与所述内面板通过波纹夹芯连接在一起形成承力筒主体，所述承力筒主体的上段呈直筒形，承力筒主体的下段呈锥筒形，所述波纹夹芯通过多个波纹单元组成，所述波纹单元的数量为60个且呈圆周均布，相邻所述波纹单元侧边边缘胶粘连接在一起。本结构可以提高空间利用率，结构简单整齐对称，减重效果明显，比强度和比刚度高，也能保证承力结构的力学特性，具有承载力高，自稳定性高，抗屈曲能力强的特点，空间相对开放构型有利于结构的多功能设计，也便于检测和维护，波纹夹芯结构对损伤不敏感，耐损伤程度大，可靠性高。

Description

一种轻质波纹夹芯型复合材料承力筒
技术领域
本发明涉及承力筒技术领域，尤其涉及一种轻质波纹夹芯型复合材料承力筒。
背景技术
筒形承力结构因其稳定性好、可靠性高、抗剪能力强等特点，被广泛应用于航天器舱段、仓储罐、特种设备保护壳体等主承力结构。
筒形承力结构主要由上下面板和中间芯材组成，目前上下面板和芯材一般采用普通低碳钢、高强度钢和铝合金等金属材料，很少涉及其他材料。在结构设计方面，现有承力筒大多采用波纹壳、面板加筋、蜂窝蒙皮等结构，呈现多余繁琐的结构，除此之外连接件、补强件相对较多，这样一旦增加了结构的重量，就降低了承力结构的使用性能和可靠性。尤其在航天器舱段、特种设备保护壳体等承力结构的设计，不仅要保证结构强度，而且追求轻质化。
发明内容
本发明的目的是提供一种轻质波纹夹芯型复合材料承力筒，解决一方面减轻主承力结构的重量，一方面提高主承力结构承载能力的问题。
为解决上述技术问题，本发明采用如下技术方案：
本发明一种轻质波纹夹芯型复合材料承力筒，包括外面板、内面板和波纹夹芯，所述外面板与所述内面板通过波纹夹芯连接在一起形成承力筒主体，所述承力筒主体的上段呈直筒形，承力筒主体的下段呈锥筒形，所述波纹夹芯通过多个波纹单元组成。
进一步的，所述波纹单元的数量为60个且呈圆周均布，相邻所述的波纹单元侧边边缘胶粘连接在一起。
进一步的，所述波纹单元的截面为等腰三角形，包括连接在一起的直段和倾斜段两部分，所述直段和倾斜段的倾角为20°。
进一步的，所述承力筒主体的直筒形上段沿轴向等距分布三圈通孔，每圈通孔沿径向圆周均布有12个，所述通孔共有36个。
进一步的，所述通孔处预埋有金属套筒，所述金属套筒的两端连接在所述内面板与外面板，且所述金属套筒两端设置为弧面。
进一步的，所述波纹夹芯开设通孔的圆周上设置有加强填充块，所述加强填充块包括外填充块和内填充块，所述加强填充块采用硬质泡沫块，所述外填充块放置在所述波纹单元的两边边缘胶粘形成的夹角槽处，所述内填充块放置在波纹单元的V形槽处，每圈一侧各有60个，三圈两侧共360个。
进一步的，所述内面板和外面板的厚度相同，并且与波纹夹芯胶粘连接在一起。
进一步的，所述波纹夹芯由碳纤维复合材料制作并通过模具热压一体成型，所述外面板、内面板均采用碳纤维复合材料制成。
与现有技术相比，本发明的有益技术效果：
一种轻质波纹夹芯型复合材料承力筒，承力筒主体包括外面板、内面板和波纹夹芯，承力筒主体外观为直筒形与锥形筒连接，克服了传统筒形承力结构外形单一的缺点，传统的直筒段结构内部空间利用率低，而采用锥形筒和直筒段相连的形式，可以提高空间利用率；内外面板之间用波纹夹芯结构填充连接，不仅结构简单整齐对称，而且减重效果明显，比强度和比刚度高，具有很高的重量效率；在开孔位置填充硬质泡沫和套筒，用来增强连接强度。本发明承力筒主体根据力学特性，具有承载力高，自稳定性高，抗屈曲能力强的特点，空间相对开放，构型有利于结构的多功能设计，也便于检测和维护，波纹夹芯结构对损伤不敏感，耐损伤程度大，可靠性高。
附图说明
下面结合附图说明对本发明作进一步说明。
图1为本发明轻质波纹夹芯型复合材料承力筒示意图；
图2为本发明轻质波纹夹芯型复合材料承力筒内部结构示意图；
图3为本发明波纹单元结构图；
图4为本发明波纹夹芯结构图；
图5为图2中A的放大图；
图6为图2中B的放大图；
附图标记说明：1、内面板；2、外面板；3、波纹夹芯；4、金属套筒；5、外填充块；6、内填充块；7、波纹单元；8、通孔。
具体实施方式
如图1-6所示，一种轻质波纹夹芯型复合材料承力筒，包括外面板1、内面板2和波纹夹芯3，所述外面板1与所述内面板2通过波纹夹芯3连接在一起形成承力筒主体，所述承力筒主体的上段呈直筒形，承力筒主体的下段呈锥筒形，所述波纹夹芯3通过多个波纹单元7组成。采用直筒段和锥筒段相连的形式，可以提高空间利用率，采用波纹夹芯3填充不仅能够减轻重量而且还能保证强度。
所述波纹单元7的数量为60个且呈圆周均布，相邻所述的波纹单元7侧边边缘胶粘连接在一起。内外面板之间用波纹夹芯3连接，具有承载力高，自稳定性高，抗屈曲能力强的特点。
所述波纹单元7的截面为等腰三角形，包括连接在一起的直段和倾斜段两部分，所述直段和倾斜段的倾角为20°。所述波纹单元7下端向外倾斜20°，圆周分布后呈直筒段和锥筒段。
所述承力筒主体的直筒形上段沿轴向等距分布三圈通孔8，每圈通孔8沿径向圆周均布有12个，所述通孔8共有36个。
所述通孔8处预埋有金属套筒4，所述金属套筒4的两端连接在所述内面板1与外面板2，且所述金属套筒4两端设置为弧面。直筒段开孔处安装金属套筒4，增加内外面板连接强度。
所述波纹夹芯3开设通孔8的圆周上设置有加强填充块，所述加强填充块包括外填充块5和内填充块6，所述加强填充块采用硬质泡沫块，所述外填充块5放置在所述波纹单元7的两边边缘胶粘形成的夹角槽处，所述内填充块6放置在波纹单元7的V形槽处，每圈一侧各有60个，三圈两侧共360个。直筒段开孔位置的圆周填充硬质泡沫块，来增强结构强度，内圈的内填充块6和外圈的外填充块5采用相同的硬质泡沫填充块，硬质泡沫填充块和金属套筒4主要起到加强结构强度的作用。
所述内面板1和外面板2厚度相同，并且与波纹夹芯3胶粘连接在一起。
所述波纹夹芯3由碳纤维复合材料制作并通过模具热压一体成型，所述外面板1、内面板2均采用碳纤维复合材料制成。碳纤维复合材料可以结合波纹夹芯结构，对其力学特性进行设计，保证连接处的强度，从而能够保证整体的强度。
本发明的使用方式如下：
本发明波纹夹芯式复合材料承力筒，通过对内面板1、外面板2和波纹单元7的长度、倾斜角、材料、加工方式以及波纹单元7的数量适当调整，从而提高对载荷和环境的适应性，就能满足不同载荷、不同的需要，本结构具有低重量高强度性质，波纹夹芯结构对损伤不敏感，耐损伤程度大，可靠性高，可以作为航天器舱段、仓储罐、特种设备保护壳体等主承力结构。
以上所述的实施例仅是对本发明的优选方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案做出的各种变形和改进，均应落入本发明权利要求书确定的保护范围内。

Claims (8)

1.一种轻质波纹夹芯型复合材料承力筒，其特征在于：包括外面板(1)、内面板(2)和波纹夹芯(3)，所述外面板(1)与所述内面板(2)通过波纹夹芯(3)连接在一起形成承力筒主体，所述承力筒主体的上段呈直筒形，承力筒主体的下段呈锥筒形，所述波纹夹芯(3)通过多个波纹单元(7)组成。
2.根据权利要求1所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述波纹单元(7)的数量为60个且呈圆周均布，相邻所述的波纹单元(7)侧边边缘胶粘连接在一起。
3.根据权利要求2所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述波纹单元(7)的截面为等腰三角形，包括连接在一起的直段和倾斜段两部分，所述直段和倾斜段的倾角为20°。
4.根据权利要求1所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述承力筒主体的直筒形上段沿轴向等距分布三圈通孔(8)，每圈通孔(8)沿径向圆周均布有12个，所述通孔(8)共有36个。
5.根据权利要求4所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述通孔(8)处预埋有金属套筒(4)，所述金属套筒(4)的两端连接在所述内面板(1)与外面板(2)上，且所述金属套筒(4)的两端设置为弧面。
6.根据权利要求5所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述波纹夹芯(3)开设通孔(8)的圆周上设置有加强填充块，所述加强填充块包括外填充块(5)和内填充块(6)，所述加强填充块采用硬质泡沫块，所述外填充块(5)放置在所述波纹单元(7)的两边边缘胶粘形成的夹角槽处，所述内填充块(6)放置在波纹单元(7)的V形槽处，每圈一侧各有60个，三圈两侧共360个。
7.根据权利要求1所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述内面板(1)和外面板(2)的厚度相同，并且与波纹夹芯(3)胶粘连接在一起。
8.根据权利要求1所述的轻质波纹夹芯型复合材料承力筒，其特征在于：所述波纹夹芯(3)由碳纤维复合材料制作并通过模具热压一体成型，所述外面板(1)、内面板(2)均采用碳纤维复合材料制成。
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Cited By (1)

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CN114211830A (zh) * 2021-12-23 2022-03-22 中国人民解放军国防科技大学 一种大型复合材料推力筒及其制备方法

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