复合材料格栅板受弯性能试验研究与数值分析

玻璃钢/复合材料 ›› 2020, Vol. 0 ›› Issue (1): 12-20.

复合材料格栅板受弯性能试验研究与数值分析

吴启凡, 方海^*, 高峰, 陈继业

南京工业大学土木工程学院,南京 211816

收稿日期:2019-03-20 出版日期:2020-01-28 发布日期:2020-01-28
通讯作者: 方海(1981-),男,博士,教授,硕士研究生导师,主要从事复合材料结构方面的研究,fanghainjut@163.com。
作者简介:吴启凡(1994-),男,硕士研究生,主要从事复合材料结构方面的研究。
基金资助:
国家自然科学基金项目(51578285)

EXPERIMENTAL TESTING AND NUMERICAL SIMULATION ON FLEXURAL BEHAVIOR OF COMPOSITE GRID PANELS

WU Qi-fan, FANG Hai^*, GAO Feng, CHEN Ji-ye

College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China

Received:2019-03-20 Online:2020-01-28 Published:2020-01-28

摘要/Abstract

摘要： 以纤维增强复合材料格栅板为研究对象,包括不设蒙皮的纯格栅板、设单面蒙皮的格栅加筋板和设双面蒙皮的格栅夹层板。采用不饱和聚酯树脂作为基体材料,玻璃纤维作为增强材料,通过模塑工艺加工成型格栅板。针对该板的受弯性能开展试验研究与数值分析。对按不同方式设置蒙皮的格栅板进行了三点弯和四点弯加载试验,研究其受弯承载力、破坏形态等,结果表明:采用上蒙皮增强纯格栅板,可显著提高试件的抗弯承载力和刚度,并使结构具备良好的延性破坏特征。针对格栅板的受弯性能进行了数值分析,并对比试验结果,验证了有限元模拟的准确性;针对蒙皮厚度、格肋高度、格肋厚度和格肋间距等因素对格栅板受弯性能的影响规律进行了参数分析。

关键词: 复合材料格栅板, 蒙皮, 格肋, 受弯性能, 数值分析

Abstract: The paper aims to prepare a composite grid panel reinforced with glass fibre, including the pure grid panel with no skin, grid-stiffened panel with single skin and sandwich grid panel with double skins. By adopting the molding process, using unsaturated polyester resin as bulk material and glass fibre as reinforcer, the grid panel was manufactured. The flexural behavior of grid panel was investigated through experimental tests and numerical simulations. First of all, under three and four point bending loads, an experimental research was carried out to validate the effectiveness of the panels with different structural enhancement modes for increasing the ultimate bending strength and stiffness. The results showed that the flexural bearing capacity and bending stiffness can be significantly improved by strengthening the pure grid with upper skin, bringing the structure better ductile failure characteristics. Then, the numerical simulation of flexural behavior of the grid panel was conducted. The numerical results showed good agreement with the experimental results. Meanwhile, the effects of skin thickness, rib height, rib thickness and rib spacing on the flexural behavior of grid panel were analyzed.

Key words: composite grid panel, skin, reticular rib, flexural behavior, numerical simulation

中图分类号:

TB332

吴启凡, 方海, 高峰, 陈继业. 复合材料格栅板受弯性能试验研究与数值分析[J]. 玻璃钢/复合材料, 2020, 0(1): 12-20.

WU Qi-fan, FANG Hai, GAO Feng, CHEN Ji-ye. EXPERIMENTAL TESTING AND NUMERICAL SIMULATION ON FLEXURAL BEHAVIOR OF COMPOSITE GRID PANELS[J]. Fiber Reinforced Plastics/Composites, 2020, 0(1): 12-20.

参考文献

[1] 方海, 刘伟庆, 万里. 点阵增强型复合材料夹层结构的制备与力学性能研究[J]. 建筑材料学报, 2008, 11(4): 496-499.
[2] Mouritz A, Gellert E, Burchill P, et al. Review of advanced composite structure for naval ships and submarines[J]. Composite Structures, 2001, 53(11): 21-41.
[3] 曾宪桃, 车惠民. 复合材料FRP在桥梁工程中的应用及其前景[J]. 桥梁建设, 2000, 4(2): 66-69.
[4] 杜善义, 章继峰, 张博明. 先进复合材料格栅结构(AGS)应用与研究进展[J]. 航空学报, 2007, 28(2): 419-424.
[5] Wang J T S, Hsu T M. Optional discrete analysis of stiffened composite cylindrical shells[J]. AIAA J, 1985, 23(3): 1753-1761.
[6] Gendron G, Gurdal Z. Optimal design of geodesically stiffened composite cylindrical shells: AIAA Paper No. 92-2306-CP[R]. 1992: 2431-2441.
[7] Troltsky M S, Hoppmann W H. Stiffened plates: bending, stability and vibration[M]. Amsterdam: Elsevier Science Publishing Company, 1976: 36-120.
[8] Reddy A D, Valisetty R R, Rehfield L W. Continuous filament wound composites concepts for aircraft fuselage structures[J]. AIAA Journal of Aircraft, 1985, 22(3): 249-255.
[9] Phillips J L, Gural Z. Structural analysis and optimum design geodesically stiffened composite panels: NASA CCMS-90-50(VPI-E-90-80), Grant NAG-1-643[R]. 1990: 1-268.
[10] Navin J, Norman F K, Damodar R A. Formulation of an improved smeared theory for buckling analysis of grid-stiffened composite panels[J]. Composite Part B, 1996, 27B(5): 519-526.
[11] Kidane S, Li G Q, Helms J, et al. Buckling load analysis of grid stiffened composite cylinders[J]. Composite Part B, 2003, 34(1): 1-9.
[12] Steven H, Tsai S W. Analysis and behavior of grid structure[D]. Stanford, CA: Stanford University, 1995.
[13] 张志峰, 陈浩然, 李煊, 等. 先进复合材料格栅圆柱壳优化设计的混合遗传算法[J]. 复合材料学报, 2005, 22(2): 166-171.
[14] Chen H J, Stephen W T. Analysis and optimum design of composite grid strictures[J]. Journal of Composite Materials, 1996, 30(4): 503-533.
[15] 吴德财, 徐元铭, 万青. 先进复合材料格栅加筋板的总体稳定性分析[J]. 复合材料学报, 2007, 24(2): 168-173.
[16] 夹层结构弯曲性能试验方法: GB /T 1456—2005[S]. 北京: 中国标准出版社, 2005.
[17] Standard Test Method for Flexural Properties of Sandwich Constructions: ASTM Test Method C393-94[S].