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Prediction of Delamination Threshold Load for Impact on Composite Laminate Based on Modified Interlaminar Shear Strength Criterion
Received date: 2013-08-26
Revised date: 2014-01-06
Online published: 2014-02-14
Supported by
National Natural Science Foundation of China (11372192);Natural Science Foundation of Shanghai (13ZR1422200); Scientific and Technological Research Project in Major Program Supported by Shanghai Committee of Science and Technology (12dz1100302)
The contact radius of thin plates subjected to impacts with great deflection may be larger than that which is directly calculated with the Hertzian contact law. Two methods are proposed to calculate the contact radius with consideration of the deflection of a thin plate. The preliminary contact radius is calculated first based on the Hertzian contact law. The modified contact radius is then obtained by solving the simultaneous equations of a composite laminate's deflection and the geometry of the impactor. The modification of the contact radius is verified with finite element simulations. The modified contact radius is adopted to set up a new delamination threshold load (DTL) criterion based on the interlaminar shear strength. An approach of DTL prediction for the impact on composite laminates of different thicknesses by different tup diameters using a little test data is proposed based on this criterion. The proposed method is applied to predict the DTL of a low velocity impact on the skin of a composite wing box and it yields more accurate results.
GAO Shangjun , YU Zhefeng , WANG Hai . Prediction of Delamination Threshold Load for Impact on Composite Laminate Based on Modified Interlaminar Shear Strength Criterion[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(5) : 1329 -1335 . DOI: 10.7527/S1000-6893.2013.0512
[1] Yang N B, Zhang Y N. Composite structure design[M]. Beijing: Beihang University Press, 2003: 321-330. (in Chinese) 杨乃宾, 章怡宁. 复合材料结构设计[M]. 北京: 北京航空航天大学出版社, 2003: 321-330.
[2] Gu X J, Xu X W. Numerical simulation of damage in stiffened integral composite panels under high velocity impact [J]. Acta Aeronautica et Astronautica Sinica, 2012, 33(2): 258-272. (in Chinese) 古兴瑾, 许希武. 复合材料整体化加筋壁板高速冲击损伤数值模拟[J]. 航空学报, 2012, 33(2): 258-272.
[3] Kumar P, Rai B. Impact damage on single interface GFRP laminates-an experimental study[J]. Composite Structures, 1991, 18(1): 1-10.
[4] Shen Z, Zhang Z L, Wang J. Characterization of damage resistance and damage tolerance behavior of composite laminates[J]. Acta Materiae Compositae Sinica, 2004, 21(5): 140 -145. (in Chinese) 沈真, 张子龙, 王进. 复合材料损伤阻抗和损伤容限的性能表征[J]. 复合材料学报, 2004, 21(5): 140-145.
[5] Choi H Y, Chang F K. A model for predicting damage in graphite/epoxy laminated composites resulting from low-velocity point impact[J]. Journal of Composite Materials, 1992, 26(14): 2134-2169.
[6] Zhou G. Damage mechanisms in composite laminates impacted by a flat-ended impactor[J]. Composites Science and Technology, 1995, 54(3): 267-273.
[7] Yi P Y, Yu Z F, Wang H. Stiffness degradation methodology for low-velocity impact simulation in composite laminate[J]. Chinese Quarterly of Mechanics, 2012, 33(3): 469-475. (in Chinese) 伊鹏跃, 于哲峰, 汪海. 复合材料层压板低速冲击刚度退化仿真方案研究[J]. 力学季刊, 2012, 33(3): 469-475.
[8] Chen Y J, Yu Z F, Wang H. Numerical modeling of scale effects on the responses of laminated composite plate under low velocity impact[J]. Chinese Journal of Solid Mechanics, 2012, 33(6): 574-582. (in Chinese) 陈亚军, 于哲峰, 汪海. 复合材料层压板低速冲击响应比例效应数值模拟研究[J]. 固体力学学报, 2012, 33(6): 574-582.
[9] Davies G A O, Zhang X. Impact damage prediction in carbon composite structures[J]. International Journal of Impact Engineering, 1995, 16(1): 149-170.
[10] Sutherland L S, Soares C G. Contact indentation of marine composites[J]. Composite Structures, 2005, 70(3): 287-294.
[11] Yang F J, Cantwell W J. Impact damage initiation in composite materials[J]. Composites Science and Technology, 2010, 70(2): 336-342.
[12] Tan T M, Sun C T. Use of statical indentation laws in the impact analysis of laminated composite plates[J]. Journal of Applied Mechanics, 1985, 52(1): 6-12.
[13] Wu E, Shyu K. Response of composite laminates to contact loads and relationship to low-velocity impact[J]. Journal of Composite Materials, 1993, 27(15): 1443-1464.
[14] Cairns D S, Lagace P A. Thick composite plates subjected to lateral loading[J]. Journal of Applied Mechanics, 1987, 54(3): 611-616.
[15] Wu E, Yen C S. The contact behavior between laminated composite plates and rigid spheres[J]. Journal of Applied Mechanics, 1994, 61(1): 60-66.
[16] Chen P, Xiong J, Shen Z. Thickness effect on the contact behavior of a composite laminate indented by a rigid sphere[J]. Mechanics of Materials, 2008, 40(4): 183-194.
[17] Olsson R. Mass criterion for wave controlled impact response of composite plates[J]. Composites Part A: Applied Science and Manufacturing, 2000, 31(8): 879-887.
[18] Majeed M A, Ahmet S Y, Andreas P C. Elastoplastic contact/impact of rigidly supported composites[J]. Composites Part B: Engineering, 2012, 43(3): 1244-1251.
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