TY - GEN
T1 - Influence of chord wall interaction on stress concentrations of square bird-beak SHS X-joints
AU - Li, C.
AU - Cheng, B.
AU - Qian, Q.
AU - Lou, Y.
AU - Zhao, Xiao Lin
N1 - Funding Information:
The research work was sponsored by the National Natural Science Foundation of China (no. 51678359). The supports are gratefully acknowledged.
Funding Information:
The research work was sponsored by the National NaturalScienceFoundationof China(no.51678359). The supports are gratefully acknowledged.
Publisher Copyright:
© 2018 Taylor & Francis Group, London.
PY - 2018
Y1 - 2018
N2 - This research employed an X-shape Square Hollow Section (SHS) joint with typical non-dimensional parameters (i.e., β = 0.6, 2γ = 20, τ = 0.5) to illustrate the influences of chord wall interactions on stress concentrations of square bird-beak welded connections. Refined finite element models considering geometries of welds were constructed, and numerical results show that, for the square bird-beak X-joint under single-side brace axial force, the stresses on the non-brace load side are up to 62% of the values at the corresponding locations on the brace load side and thus cannot be ignored for SCF predictions. The influencing mechanism has been revealed as the interactions between adjacent walls of the chord. A new load case, where both single-side brace axial force and reversed chord in-plane bending were considered, has been introduced as the solution. The proposed superposition approach makes the SCF calculation of square bird-beak X-joints under asymmetrical brace axial forces more accurate and simpler.
AB - This research employed an X-shape Square Hollow Section (SHS) joint with typical non-dimensional parameters (i.e., β = 0.6, 2γ = 20, τ = 0.5) to illustrate the influences of chord wall interactions on stress concentrations of square bird-beak welded connections. Refined finite element models considering geometries of welds were constructed, and numerical results show that, for the square bird-beak X-joint under single-side brace axial force, the stresses on the non-brace load side are up to 62% of the values at the corresponding locations on the brace load side and thus cannot be ignored for SCF predictions. The influencing mechanism has been revealed as the interactions between adjacent walls of the chord. A new load case, where both single-side brace axial force and reversed chord in-plane bending were considered, has been introduced as the solution. The proposed superposition approach makes the SCF calculation of square bird-beak X-joints under asymmetrical brace axial forces more accurate and simpler.
UR - http://www.scopus.com/inward/record.url?scp=85061297264&partnerID=8YFLogxK
U2 - 10.1201/9781351210843-24
DO - 10.1201/9781351210843-24
M3 - Conference article published in proceeding or book
AN - SCOPUS:85061297264
SN - 9780815381341
T3 - Tubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017
SP - 201
EP - 206
BT - Tubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017
A2 - Heidarpour, Amin
A2 - Zhao, Xiao-Ling
PB - CRC Press/Balkema
T2 - 16th International Symposium on Tubular Structures, ISTS 2017
Y2 - 4 December 2017 through 6 December 2017
ER -