碳纤维/玻璃纤维混编编织复合材料顶盖中横梁三点弯强度分析
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摘要
根据二维三轴编织复合材料中碳纤维束和玻璃纤维束的空间几何特征,建立了碳纤维/玻璃纤维混编复合材料刚度预报模型;基于Tsai-Wu准则建立了该二维三轴编织复合材料的强度预报模型,提出了针对编织复合材料结构渐进失效分析的一般流程;设计了相应的材料试验,验证了理论模型的有效性;最后,对使用了该材料的顶盖中横梁进行了三点弯强度分析。结果表明横梁容易发生破坏的位置集中在接触位置和棱角上。
A stiffness prediction model was built for carbon/glass fiber-reinforced & 2 Dtriaxial braided composites(2 DTBC)in accordance with the feature of spatial geometry of carbon fiber and glass fiber,and a strength prediction model was established based on Tsai-Wu failure criterion,thus a general process of progressive failure analysis of braided composites being created.The corresponding material testing was designed and the engineering constants and strength parameters obtained from it verified the reliability of theoretical models.Furthermore,a strength analysis of three-point bending for middle crossbeam-roof made of carbon/glass fiber-reinforced 2 DTBC was conducted.The results show that failure-prone positions are concentrated in the contact positions and edges of crossbeam-roof.
A stiffness prediction model was built for carbon/glass fiber-reinforced & 2 Dtriaxial braided composites(2 DTBC)in accordance with the feature of spatial geometry of carbon fiber and glass fiber,and a strength prediction model was established based on Tsai-Wu failure criterion,thus a general process of progressive failure analysis of braided composites being created.The corresponding material testing was designed and the engineering constants and strength parameters obtained from it verified the reliability of theoretical models.Furthermore,a strength analysis of three-point bending for middle crossbeam-roof made of carbon/glass fiber-reinforced 2 DTBC was conducted.The results show that failure-prone positions are concentrated in the contact positions and edges of crossbeam-roof.
引文
[1]Potluri P,Manan A.Mechanics of non-orthogonally interlaced textile composites[J].Composites Part A:Applied Science and Manufacturing,2007,38(4):1216-1226.
[2]Aggarwal A,Ramakrishna S,Ganesh V K.Predicting the in-plane elastic constants of diamond braided composites[J].Journal of Composite Materials,2001,35(8):665-688.
[3]Johnson W,Masters J,O’Brien T,et al.Mechanical properties of triaxially braided composites:experimental and analytical results[J].Journal of Composites Technology&Research,1993,15:112-122.
[4]Byun J H.The analytical characterization of 2-d braided textile composites[J].Composites Science and Technology,2000,60(5):705-716.
[5]Quek S C,Waas A M,Shahwan K W,et al.Analysis of 2Dtriaxial flat braided textile composites[J].International Journal of Mechanical Sciences,2003,45(6/7):1077-1096.
[6]Kier Z T,Salvi A,Theis G,et al.Estimating mechanical properties of 2Dtriaxially braided textile composites based on microstructure properties[J].Composites Part B:Engineering,2015,68:288-299.
[7]Shokrieh M M,Mazloomi M S.An analytical method for calculating stiffness of two-dimensional tri-axial braided composites[J].Composite Structures,2010,92(12):2901-2905.
[8]严雪,许希武,张超.二维三轴编织复合材料的弹性性能分析[J].固体力学学报,2013,34(2):140-151.YAN Xue,XU Xiwu,ZHANG Chao.Analysis of elastic properties of 2Dtriaxial braided composites[J].Chinese Journal of Solid Mechanics,2013,34(2):140-151.(in Chinese)
[9]张芳芳,刘才.二维三轴编织复合材料强度及渐进损伤数值预测[J].机械工程学报,2015,51(8):84-91.ZHANG Fangfang,LIU Cai.Progressive damage simulation and strength prediction of 2Dtriaxial braided composites[J].Journal of Mechanical Engineering,2015,51(8):84-91.(in Chinese)
[10]张超,许希武.二维二轴编织复合材料几何模型及弹性性能预测[J].复合材料学报,2010,27(5):129-135.ZHANG Chao,XU Xiwu.Geometrical model and elastic properties prediction of 2Dbiaxial braided composites[J].Acta Materiae Compositae Sinica,2010,27(5):129-135.(in Chinese)
[11]张平,桂良进,范子杰.三向编织复合材料弹性性能研究[J].工程力学,2009,26(1):31-36.ZHANG Ping,GUI Liangjin,FAN Zijie.Study on the elastic properties of triaxially braided composites[J].Engineering Mechanics,2009,26(1):31-36.(in Chinese)
[12]Tsai S W,Wu E M.A general theory of strength for anisotropic materials[J].Journal of Composite Materials,1971,5(1):58-80.
[2]Aggarwal A,Ramakrishna S,Ganesh V K.Predicting the in-plane elastic constants of diamond braided composites[J].Journal of Composite Materials,2001,35(8):665-688.
[3]Johnson W,Masters J,O’Brien T,et al.Mechanical properties of triaxially braided composites:experimental and analytical results[J].Journal of Composites Technology&Research,1993,15:112-122.
[4]Byun J H.The analytical characterization of 2-d braided textile composites[J].Composites Science and Technology,2000,60(5):705-716.
[5]Quek S C,Waas A M,Shahwan K W,et al.Analysis of 2Dtriaxial flat braided textile composites[J].International Journal of Mechanical Sciences,2003,45(6/7):1077-1096.
[6]Kier Z T,Salvi A,Theis G,et al.Estimating mechanical properties of 2Dtriaxially braided textile composites based on microstructure properties[J].Composites Part B:Engineering,2015,68:288-299.
[7]Shokrieh M M,Mazloomi M S.An analytical method for calculating stiffness of two-dimensional tri-axial braided composites[J].Composite Structures,2010,92(12):2901-2905.
[8]严雪,许希武,张超.二维三轴编织复合材料的弹性性能分析[J].固体力学学报,2013,34(2):140-151.YAN Xue,XU Xiwu,ZHANG Chao.Analysis of elastic properties of 2Dtriaxial braided composites[J].Chinese Journal of Solid Mechanics,2013,34(2):140-151.(in Chinese)
[9]张芳芳,刘才.二维三轴编织复合材料强度及渐进损伤数值预测[J].机械工程学报,2015,51(8):84-91.ZHANG Fangfang,LIU Cai.Progressive damage simulation and strength prediction of 2Dtriaxial braided composites[J].Journal of Mechanical Engineering,2015,51(8):84-91.(in Chinese)
[10]张超,许希武.二维二轴编织复合材料几何模型及弹性性能预测[J].复合材料学报,2010,27(5):129-135.ZHANG Chao,XU Xiwu.Geometrical model and elastic properties prediction of 2Dbiaxial braided composites[J].Acta Materiae Compositae Sinica,2010,27(5):129-135.(in Chinese)
[11]张平,桂良进,范子杰.三向编织复合材料弹性性能研究[J].工程力学,2009,26(1):31-36.ZHANG Ping,GUI Liangjin,FAN Zijie.Study on the elastic properties of triaxially braided composites[J].Engineering Mechanics,2009,26(1):31-36.(in Chinese)
[12]Tsai S W,Wu E M.A general theory of strength for anisotropic materials[J].Journal of Composite Materials,1971,5(1):58-80.