Analytical and numerical investigation of bending moment coefficient in unbalanced single lap joints

被引:1
作者
Mouzakis, D. E. [1 ]
Charitidis, P. J. [2 ]
Papanicolaou, G. C. [2 ]
机构
[1] Technol Educ Inst Thessaly, Dept Mech Engn, GR-41110 Larisa, Greece
[2] Univ Patras, Dept Mech & Aeronaut Engn, Composite Mat Grp, GR-26500 Patras, Greece
关键词
Adhesively bonded joints; Bending moment coefficient; FEA to joints; Boron/epoxy-aluminium lap joints; ADHESIVELY BONDED JOINTS; 2-DIMENSIONAL STRESS-ANALYSIS; DISSIMILAR ADHERENDS; NONLINEAR-ANALYSIS; RESIDUAL STRENGTH; ANALYTICAL-MODELS; FINITE-ELEMENT; PREDICTION; BEHAVIOR;
D O I
10.1179/1743289815Y.0000000038
中图分类号
TB33 [复合材料];
学科分类号
摘要
A study was conducted to investigate the bending moment coefficient in unbalanced boron/epoxy-aluminium single lap joints subjected to tensile loading. It is well known that the main feature of the single lap joint is the eccentric loading path, which results in large deflections of the outer adherend and the overlap. In addition, the joint edge moment or bending moment coefficient at the end of the overlap is a significant feature. Four different overlap lengths (13, 20, 30 and 40 mm) have been analysed. A geometrically non-linear, two-dimensional finite element analysis was also performed to provide useful comparisons with the theoretical analysis. The analytical results mainly proved that, as the overlap length increases, the bending moment coefficient mainly decreased at the stiffer adherend, while the maximum l/c ratio is also decreased. The latter conclusions show that unbalanced (asymmetrical) single lap joints should be designed and manufactured with extreme care.
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页码:413 / 422
页数:10
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