RESEARCH ON BEARING CAPACITY AND SHEAR STRESS DISTRIBUTION OF COMPOSITE PRE-TIGHTENED TEETH CONNECTION IN TENSION AND COMPRESSION

Abstract

Abstract: Pre-tightened tooth connection (PTTC) is a novel connection for composite tubes which has high connection efficiency. The PTTC single tooth plane joint in tension and compression was studied in this paper. The bearing capacity and shear stress distribution of the single tooth joint were compared in tension and compression. The digital speckle correlation method (DSCM) and contact analysis numerical methods are used to analyze the shear strain of specimens. The study shows that the bearing capacities are almost the same with the same factors in tension and compression, but the shear stress distribution of the shear area of the tooth is different. This conclusion can be used in the design and calculation of pre-tightened tooth connection (PTTC).

Key words: composite, pre-tightened teeth connection, bearing capacities, shear stress distribution, digital speckle correlation method

CLC Number:

TB332

XU Long-xing, CHENG Ying, CHEN Li, XU Pan-feng. RESEARCH ON BEARING CAPACITY AND SHEAR STRESS DISTRIBUTION OF COMPOSITE PRE-TIGHTENED TEETH CONNECTION IN TENSION AND COMPRESSION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(6): 23-28.

References

[1] Starikov R, Schon J. Quasi-static behavior of composite joints with protruding head bolts[J]. Composite Structures, 2001,51: 411-425.
[2] Fei Li, Qi Lin Zhao. Prediction of tensile capacity based on cohesive zone model of bond anchorage for fiber-reinforce polymer tendon[J].Composite Structures, 2010,92: 2400-2405.
[3] 马毓,赵启林. 复合材料胶-螺混合连接接头承载力分析[J]. 复合材料学报, 2011, 28(4): 225-231.
[4] 徐龙星,赵启林,陈浩森, 等. 复合材料点阵结构新型结点连接方式研究[J]. 玻璃钢/复合材料,2013,(7):3-6.
[5] 袁辉,刘鹏飞,赵启林,等. 胶-螺混合连接承载力的参数影响研究[J]. 玻璃钢/复合材料,2013,(5):66-71.
[6] 李飞. 复合材料新型连接技术及在桁架中的应用研究[D].南京:解放军理工大学博士学位论文, 2012.
[7] Zhang D. Z Q.H Y. Flexural properties of a lightweight hybrid FRP-aluminum modular space truss bridge system[J]. Composite Structures, 2014, 108(0):600-615.
[8] 赵启林,刘鹏飞,徐龙星. 玻璃纤维复合材料-钢组合桁架结构长期力学性能研究[J]. 工业建筑, 2013(增刊).
[9] 赵启林,李飞,徐康. 新型复合材料桁架结构静载实验研究[J]. 工业建筑, 2011(增刊).
[10] 李飞,邓安仲,赵启林. 铝合金强化段对拉挤型复合材料与铝合金过盈配合的影响研究[J]. 玻璃钢/复合材料,2014,(5):13-19.
[11] Deng A Z, L Z Q, F L. Research on bearing capacity of single tooth to composite pre-tightened teeth connection[J]. Journal of Reinforced Plastics and Composites, 2013, 32(21): 1603-1613.
[12] Yamaguchi I. Speckle displacement and deformation in the diffraction and Image Fields for small object deformation[J]. Opt Acta., 1981, 28(10): 1359-1376.
[13] Peters, Ranson W F. Digital Imaging Techniques in Experimental Mechanics[J]. Opt Eng., 1982, 21(3): 427-431.
[14] Peters, W. F. Ranson, M. A. Sutton, et al. Application of digital correlation Methods to rigid body Mechanics[J]. Opt Eng., 1983, 22(6): 738-742.
[15] Chevalier, Calloch S, Hild F, et al. Digital image correlation used to analyze the multiaxial behavior of rubber-like materials,European Journal of Mechanics[J]. A soilds, 2001, 20(2): 169-187.
[16] L. Greve A, C. Bisagni, Walters C L. Biaxial experimental determination of in-plane matrix fracture envelope of unidirectional composite[J]. Composites: Part A, 2010, 41: 750-758.
[17] Andrew M. Interlaminar shear fatigue behavior of glass/epoxy and carbon/epoxy composites[J]. Composites Science and Technology, 2013, 80: 93-100.