Finite element modeling of mechanically fastened composite-aluminum joints in aircraft structures

Quasi-static bearing failure of CFRP composite in biaxially loaded bolted joints

“…In aircraft components with long bolted joints, the thermally induced stresses are of considerable magnitude and should be accounted for in design [1]. The thermally and the mechanically induced loads pass through the bolts in the perpendicular directions, creating a local biaxial loading state.…”

Progressive damage analysis of PFRP double-lap bolted joints using explicit finite element method

“…Many researches have been done on numerical simulation of composite bolted joints using PDA models. Literatures [18][19][20][21][22] developed PDA models incorporating shear nonlinearity, Hashin-type failure criterion and constant degradation law, this method turned out to be easy to implement and computational efficient but sudden stiffness drop may induce severe convergence problem. Literatures [23,24] employed continuous degradation rules to obtain smoother loading response and better convergence.…”

A three dimensional implicit finite element damage model and its application to single-lap multi-bolt composite joints with variable clearance

“…Experimental approaches have been widely used for such studies [1][2][3][4][5][6][7][8][9], while numerical simulations of increasing sophistication are enhancing our understanding of the often complex mechanical response. Recently, three-dimensional (3D) finite element (FE) models have been used to capture the non-uniform, through-thickness stress distributions [10][11][12][13][14][15][16][17], and models to predict the onset and growth of material damage have been incorporated [18][19][20][21][22][23][24][25][26]. The majority of these analyses used implicit FE solvers, which generally have difficulties in converging all the way to the ultimate failure point of CBJs [27], mainly due to the complexity of contact definition between bolts and a damaging laminate.…”

“…Kapidzic et al [14] found that an implicit solver can be made to accurately predict quasi-static joint behaviour. Egan et al then successfully modelled bearing failure in countersunk composite joints [28] using an explicit solver.…”