The characterisation of friction stir welding process effects on stiffened panel buckling performance

Impact of finite element idealisation on the prediction of welded fuselage stiffened panel buckling

“…In this work the computational and accompanying experimental analysis examines the impact of varying welding effects on panel initial skin buckling and ultimate collapse loads. The computational analysis indicates that the impact of joint and weld effect idealisation can be significantly different for small single stiffener panels [15] and larger multi stiffener panel structures [16][17]. Here again the individual paper conclusions drawn from the work on joint…”

“…Each case study considers a similar panel design but a different size specimen, with each having validating experimental results to benchmark the simulation predicted static strength behaviour. Three panel specimen designs already available in the literature are examined [15][16][17]. Each design is representative of compression critical aircraft fuselage structure.…”

“…These measurements along with welding process FE simulations were used to approximate the residual stress state present within the tested specimens. Further information on the case study specimens, individual test setups and experimental results can be found in the individual references [15,16,17].…”

“…A vast range of analysis methods are available, including Finite Strip [10][11][12] and Finite Element [5][6][7][8][9]. Focusing on FE analysis, the analysis method to be used herein, recent examples which demonstrate the current state-of-the-art include studies which examine the influence of manufacturing assembly methods on panel strength, for both marine [13][14] and aerospace structures [15][16][17][18]. Further examples demonstrate analysis to understand the impact of panel configuration on buckling and post-buckling behaviour [19][20], and the development of efficient design rules for specific panel configurations [21][22].…”

Element Simulation of Welding Residual Stresses and Distortion in 5083 Incorporating Metallurgical Phase Transformation

“…Zain-ulAbdein M et al [8,9] predicted the laser beam welding induced distortions and residual stresses with the commercial finite element software Abaqus. Other published works [10][11][12][13][14] focus upon factors affecting residual distortion in stiffened panels like loading and boundary conditions, geometry of the specimen, welding process parameters etc.…”