承内外压复合材料方管的加强筋结构设计  

Design of Stiffener of Composites Square Tube Bearing Inner or Outer Pressure

作　　者：陈家正[1] 马文瑞[2] 吴伟萍[1] 侯传礼[1] 

机构地区：[1]哈尔滨玻璃钢研究院,哈尔滨150036 [2]河北工业大学,天津300401

出　　处：《纤维复合材料》2013年第2期46-48,共3页Fiber Composites

摘　　要：采用加强筋可提高复合材料方管在内外压下的抗变形能力,但目前对于加强筋的结构设计研究不足。针对复合材料方管,采用ANSYS软件研究了3种结构的加强环筋(π型空心加强筋、U型空心加强筋和实心加强筋)对复合材料方管变形的约束能力。制作了5件复合材料方管试样,并测试了其受内外压下的最大变形。结果:采用π型空心加强环筋的复合材料方管具有最小的变形。在内压0.02 MPa下测得最大变形为3.7～4.1 mm,在外压0.01 MPa下测得最大变形为4.5～4.7 mm,试验结果与有限元分析结果基本一致。表明:π型加强环筋更适合于方管筒身段的加强,方管的最大变形均未超过高强玻璃纤维的弹性变形。The bearing capacity of composites square tube under inner or outer pressure can be enhanced by using stiff- eners, but the research on the design of stiffener was insufficient. In this paper, the influence of π -stiffener, U -stiffener, and solid stiffener on deformation of composites square tube under inner and outer pressure was analyzed by ANSYS based on finite element method （FEM）. Five composites square tubes were fabricated, and the maximum deformation under inner and outer pressure were tested. The results indicated that the composites square tube reinforced by Ir - stiffener presented the smallest deformation. The inner pressure of 0.02MPa the measured maximum deformation is 3.7 - 4. lmm, the meas- ured maximum deformation under the pressure of 0.01MPa for 4.5 - 4.7mm, the test results are consistent with the re- suits of finite element analysis. It indicated that the π- stiffener is effective to reinforce the composites square tube, and the maximum, deformation of the tube is within the elastic stage of high - strength glass fiber.

关 键 词：复合材料变形 缠绕方形管道 结构设计 加强筋 ANSYS有限元分析 

分 类 号：TB33[一般工业技术—材料科学与工程]