Fatigue assessment of steel half-pipes bolted connections using local approaches

Abstract This paper proposes a multiaxial fatigue assessment of a steel half-pipe bolted connection using a local energy-based approach. This bolted connection has been proposed for onshore wind turbine towers. A global linear-elastic model with beam elements for the onshore wind turbine tower was developed taking into account the stiffness of the joint. Damage equivalent fatigue loads were applied in global beam model. To assess the stiffness of the joint a linear-elastic model considering the preload on the bolts was made. A local elastoplastic model was built to obtain the maximum principal stresses and strains. Using this analysis was possible to determine the SWT damage parameter and the number of cycles to failure for the steel half-pipes bolted connection under investigation.

[1]  Luís Simões da Silva,et al.  A comparison of the fatigue behavior between S355 and S690 steel grades , 2012 .

[2]  Alfonso Fernández-Canteli,et al.  Modelling probabilistic fatigue crack propagation rates for a mild structural steel , 2014 .

[3]  H. J. Gough,et al.  The Strength of Metals under Combined Alternating Stresses , 1935 .

[4]  P. C. Paris,et al.  A Critical Analysis of Crack Propagation Laws , 1963 .

[5]  K. N. Smith.  A Stress-Strain Function for the Fatigue of Metals , 1970 .

[6]  N. Recho,et al.  Brittle and ductile crack propagation using automatic finite element crack box technique , 2007 .

[7]  W. N. Findley,et al.  Theories relating to fatigue of materials under combinations of stress , 1956 .

[8]  Wn Findley,et al.  The Effect of the Intermediate Principal Stress on Triaxial Fatigue of 7075-T6 Aluminum Alloy , 1973 .

[9]  António Luís Lima da Silva,et al.  Advanced methodologies for the fatigue analysis of representative details of metallic bridges , 2015 .

[10]  Darrell F. Socie,et al.  Multiaxial Fatigue Damage Models , 1987 .

[11]  D. L. Mcdiarmid.  A GENERAL CRITERION FOR HIGH CYCLE MULTIAXIAL FATIGUE FAILURE , 1991 .

[12]  I. V. Papadopoulos,et al.  Long life fatigue under multiaxial loading , 2001 .

[13]  K. J. Miller,et al.  A Theory for Fatigue Failure under Multiaxial Stress-Strain Conditions , 1973 .

[14]  F. A. Conle,et al.  Multiaxial Stress-Strain Modeling and Fatigue Life Prediction of SAE Axle Shafts , 1993 .

[15]  Kc Liu,et al.  A Method Based on Virtual Strain-Energy Parameters for Multiaxial Fatigue Life Prediction , 1993 .

[16]  W. Findley.  A Theory for the Effect of Mean Stress on Fatigue of Metals Under Combined Torsion and Axial Load or Bending , 1959 .

[17]  Grzegorz Glinka,et al.  A MULTIAXIAL FATIGUE STRAIN ENERGY DENSITY PARAMETER RELATED TO THE CRITICAL FRACTURE PLANE , 1995 .

[18]  Tomokazu Matake.  An Explanation on Fatigue Limit under Combined Stress , 1977 .

[19]  Keisuke Tanaka,et al.  Fatigue crack propagation from a crack inclined to the cyclic tensile axis , 1974 .

[20]  H. J. Gough,et al.  Properties of Some Materials for Cast Crankshafts, with Special Reference to Combined Stresses , 1936 .

[21]  A. Fatemi,et al.  A CRITICAL PLANE APPROACH TO MULTIAXIAL FATIGUE DAMAGE INCLUDING OUT‐OF‐PHASE LOADING , 1988 .