Impact tests of composite cylindrical shells are performed and a finite element analysis is applied to reveal the damage mechanism of composite cylindrical shells with a circular hole subjected to axial compressive and transverse transient dynamic loads. The method of dynamic response analysis is established. First, the LS-DYNA FEM package is used to simulate the mechanical behaviors of composite cylindrical shells under complex impact loads. Subsequently, damage propagation is predicted by the implementation of the Chang-Chang criterion, which reduces the stiffness components of the corresponding failed elements. A good agreement is achieved between the numerical analysis and experimental results. Both the dynamic and static damage analysis indicates that, along the axial edge of the hole, the damage of the 90? layers, including fiber breakage and matrix cracking, is caused mainly by the circumferential tensile stress induced by transverse impact. However, the tensile stress only causes matrix cracking in the 0? layers. The first-element damage analysis shows that the structure bearing capacity of a composite cylindrical shell may be enhanced by 56% if the contents of the circumferential layers are increased from 20% to 50%.
MA Jian
,
YAN Ying
,
YANG Lei
,
LIU Yujia
,
RAN Zhiguo
. Experiments and Finite Element Analysis of Laminated Composite Cylindrical Shells with Circular Hole Subjected to Dynamic Loads[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012
, (5)
: 871
-878
.
DOI: CNKI:11-1929/V.20111209.1725.005
[1] Khalili S M R, Soroush M, Davar A, et al. Finite element modeling of low-velocity impact on laminated composite plates and cylindrical shells. Composite Structures, 2011, 93(5): 1363-1375.
[2] Tarfaoui M, Gning P B, Hamitouche L. Dynamic response and damage modeling of glass/epoxy tubular structures: numerical investigation. Composites Part A: Applied Science and Manufacturing, 2008, 39(1): 1-12.
[3] Jafari A A, Khalili S M R, Azarafza R. Transient dynamic response of composite circular cylindrical shells under radial impulse load and axial compressive loads. Thin-Wall Structures, 2005, 43(11): 1763-1786.
[4] Azarafza R, Khalili S M R, Jafari A A, et al. Analysis and optimization of laminated composite circular cylindrical shell subjected to compressive axial and transverse transient dynamic loads. Thin-Wall Structures, 2009, 47(8-9): 970-983.
[5] Luo R K, Green E R, Morrison C J. Impact damage analysis of composite plates. International Journal of Impact Engineering, 1999, 22(4): 435-447.
[6] Green E R, Morrison C J, Luo R K. Simulation and experimental investigation of impact damage in composite plates with holes. Journal of Composite Materials, 2000, 34(6): 502-521.
[7] Luo R K. The evaluation of impact damage in a composite plate with a hole. Composites Science and Technology, 2000, 60(1): 49-58.
[8] MD NASTRAN 2010. Quick reference guide. Santa Ana, CA: MSC.Software Corporation, 2010: 2141-2142.
[9] de Moura M F S F, Goncalves J P M. Modeling the interaction between matrix cracking and delamination in carbon-epoxy laminates under low velocity impact. Compo-sites Science and Technology, 2004, 64(7-8): 1021-1027.
[10] Hou J P, Petrinic N, Ruiz C, et al. Prediction of impact damage in composite plates. Composites Science and Technology, 2000, 60(2): 273-281.
[11] Swanson S R. Limits of quasi-static solutions in impact of composite structures. Composites Engineering, 1992, 2 (4): 261-267.
[12] Wardle B L, Lagace P A. Behavior of composite shells under transverse impact and quasi-static loading. AIAA Journal, 1998, 36(2): 1065-1073.
[13] Luo G M, Lee Y J. Simulation of constrained layered damped laminated plates subjected to low-velocity impact using a quasi-static method. Composite Structures, 2009, 88(2): 290-295.
[14] Zheng X X, Zheng X T, Shen Z, et al. Damage equivalent of composite laminates subjected to drop-weight impact and quasi-static indentation force. Acta Aeronautica et Astronautica Sinica, 2010, 31(5): 928-933. (in Chinese) 郑晓霞, 郑锡涛, 沈真, 等. 低速冲击与准静态压痕力下复合材料层合板的损伤等效性. 航空学报, 2010, 31(5): 928-933.
[15] Khan S U, Iqbal K, Munir A, et al. Quasi-static and impact fracture behaviors of CFRPs with nanoclay-filled epoxy matrix. Composites Part A: Applied Science and Manufacturing, 2011, 42(3): 253-264.
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