|
|
- 2016
配合方式对复合材料单钉单剪螺栓连接接头刚度的影响及其机制
|
Abstract:
针对单钉单剪复合材料螺栓连接,研究了间隙与干涉2种配合方式对接头刚度的影响及其机制。通过与试验结果的对比,验证了所采用的有限元方法的有效性。结果表明:对于复合材料单钉单剪螺栓连接,间隙配合导致接头刚度变小, 3%钉直径的间隙量导致接头刚度下降16%~17%,并且随着间隙量的增大,接头刚度基本呈线性下降;而对于装配过程中没有产生孔边分层损伤的干涉配合连接件, 0.5%钉直径的干涉量使得接头刚度增加了约15%。配合方式不同,连接件孔周接触应力峰值方向及厚度方向接触应力分布不均匀的程度不同,进而影响了接头刚度。 The influence and mechanism of fitting modes including clearance and interference on joint stiffness were researched as far as single-bolt, single-lap composite bolted joint was concerned. The validation of the adopted finite element method was confirmed by comparing with the results of tests. The results illustrate that for single-bolt, single-lap composite bolted joint, clearance fit reduces joint stiffness and the joint stiffness decreases almost linearly as clearance increases, clearance fit of 3% bolt diameter decreases joint stiffness by 16%-17%. For joint without hole delamination damage during assembling process, interference fit of 0.5% bolt diameter increases joint stiffness by about 15%. With different fitting modes, the contact stress peak direction and the uneven degree of contact stress distribution through thickness are distinct, which influence the joint stiffness. 国家自然科学基金(11302105)
| [1] | MCCARTHY M A, LAWLOR V P, STANLEY W F, et al. Bolt-hole clearance effects and strength criteria in single-bolt, single-lap, composite bolted joints[J]. Composite Science and Technology, 2002, 62(10-11):1415-1431. |
| [2] | MCCARTHY C T, MCCARTHY M A. Three-dimensional finite element analysis of single-bolt, single-lap composite bolted joints:Part II-Effects of bolt-hole clearance[J]. Composite Structures, 2005, 71(2):159-175. |
| [3] | EGAN B, MCCARTHY C T, MCCARTHY M A, et al. Stress analysis of single-bolt, single-lap, countersunk composite joints with variable bolt-hole clearance[J]. Composite Structures, 2012, 94(3):1038-1051. |
| [4] | KIM S Y, HENNIGAN D J, KIM D. Influence of fabrication and interference-fit techniques on tensile and fatigue properties of pin-loaded glass fiber reinforced plastics composites[J]. Journal of Engineering Materials and Technology, 2012, 134(4):041012. |
| [5] | PRADHAN B, BABU P R. Assessment of beneficial effects of interference-fit in pin-loaded FRP composites[J]. Journal of Reinforced Plastics and Composites, 2007, 26(8):771-788. |
| [6] | 张岐良, 曹增强. 复合材料螺接性能的影响因素研究[J]. 航空学报, 2012, 33(4):755-762. ZHANG Q L, CAO Z Q. Study on factors influencing the performance of composite bolted connections[J]. Acta Aeronautica et Astronautica Sinica, 2012, 33(4):755-762(in Chinese). |
| [7] | MCCARTHY C T, MCCARTHY M A, STANLEY W F, et al. Experiences with modeling friction in composite bolted joints[J]. Journal of Composite Materials, 2005, 39(21):1881-1908. |
| [8] | 魏景超, 矫桂琼, 闫照明, 等. 单面螺纹抽钉干涉配合复合材料连接件挤压强度研究[J]. 航空学报, 2013, 34(7):1627-1635. WEI J C, JIAO G Q, YAN Z M, et al. Bearing strength of composite joints interference-fitted with blind bolts[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(7):1627-1635(in Chinese). |
| [9] | RICCIO A. Effects of geometrical and material features on damage onset and propagation in single-lap bolted composite joints under tensile load:Part II-Numerical studies[J]. Journal of Composite Materials, 2005, 39(23):2091-2112. |
| [10] | OLMEDO á, SANTIUSTE C. On the prediction of bolted single-lap composite joints[J]. Composite Structures, 2012, 94(6):2110-2117. |
| [11] | CAMANHO P P, MATTHEWS F L. A progressive damage model for mechanically fastened joints in composite laminates[J]. Journal of Composite Materials, 1999, 33(24):2248-2280. |
| [12] | 钟小丹, 陈普会. 复合材料加筋壁板长桁终止端混合连接设计分析[J]. 复合材料学报, 2013, 30(6):197-202. ZHONG X D, CHEN P H. Combined joint design and analysis at stringer run-outs in stiffened composite panels[J]. Acta Materiae Compositae Sinica, 2013, 30(6):197-202(in Chinese). |
| [13] | 陈昆昆, 刘龙权, 汪海. 过盈配合和预紧力的混合作用对复合材料机械连接结构的影响及其机制[J]. 复合材料学报, 2013, 30(6):243-251. CHEN K K, LIU L Q, WANG H. Combined effects and mechanism of interference fit and clamping force on composite mechanical joints[J]. Acta Materiae Compositae Sinica, 2013, 30(6):243-251(in Chinese). |
| [14] | TSERPES K I, PAPANIKOS P, KERMANIDIS T. A three-dimensional progressive damage model for bolted joints in composite laminates subjected to tensile loading[J]. Fatigue & Fracture of Engineering Materials & Structures, 2001, 24(10):663-675. |
| [15] | 朱建辉. 复合材料螺栓连接渐进损伤分析与强度预测[D]. 南京:南京航空航天大学, 2013. ZHU J H. Progress damage analysis and strength prediction of composite bolt joint[D]. Nanjing:Nanjing University of Aeronautics and Astronautics, 2013(in Chinese). |
