TY - JOUR
T1 - Interlaminar stress analysis of filled-hole composite laminate with bolt clamping
AU - Cao, Yong
AU - Feng, Yunwen
AU - Yao, Xionghua
N1 - Publisher Copyright:
©, 2015, Beijing University of Aeronautics and Astronautics (BUAA). All right reserved.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - Filled-hole form and virtual interlaminar boundary method were proposed to solve interlaminar stress to study interlaminar stress distribution law of composite laminates connector with bolts, and three-dimensional finite element model was established for analyzing the filled-hole laminate with bolt clamping under in-plane compression load. The results show that interlaminar stress concentration of laminates occurs not only at the hole edge, but also in the vicinity of bolt head edge, and the greater bolt-clamping force, the more serious interlaminar stress concentration near the bolt head edge. A reasonable bolt-clamping force can improve the stress state of hole edge, and enhance the ability to resist delamination of hole edge, but can not change the interlaminar shear stress concentration state near the bolt head edge. Therefore, to improve the safety of composite structures, the interlaminar shear stress concentration problems near the bolt head edge should be considered in the laminate mechanical joint interlaminar strength design of hole edge with bolt clamping.
AB - Filled-hole form and virtual interlaminar boundary method were proposed to solve interlaminar stress to study interlaminar stress distribution law of composite laminates connector with bolts, and three-dimensional finite element model was established for analyzing the filled-hole laminate with bolt clamping under in-plane compression load. The results show that interlaminar stress concentration of laminates occurs not only at the hole edge, but also in the vicinity of bolt head edge, and the greater bolt-clamping force, the more serious interlaminar stress concentration near the bolt head edge. A reasonable bolt-clamping force can improve the stress state of hole edge, and enhance the ability to resist delamination of hole edge, but can not change the interlaminar shear stress concentration state near the bolt head edge. Therefore, to improve the safety of composite structures, the interlaminar shear stress concentration problems near the bolt head edge should be considered in the laminate mechanical joint interlaminar strength design of hole edge with bolt clamping.
KW - Bolt-clamping force
KW - Composite laminates
KW - Delamination failure
KW - Filled-hole compression
KW - Interlaminar stress
UR - http://www.scopus.com/inward/record.url?scp=84930469906&partnerID=8YFLogxK
U2 - 10.13801/j.cnki.fhclxb.20140718.003
DO - 10.13801/j.cnki.fhclxb.20140718.003
M3 - 文章
AN - SCOPUS:84930469906
SN - 1000-3851
VL - 32
SP - 542
EP - 548
JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
IS - 2
ER -