TY - JOUR

T1 - Failure assessment of cracked uni-planar square hollow section T-, Y- and K-joints using the new BS 7910

T2 - 2013+A1:2015

AU - Sukumara Pillai, Vipin

AU - Kolios, Athanasios

AU - Lie, Seng Tjhen

PY - 2018/7/6

Y1 - 2018/7/6

N2 - This paper covers the validation of standard safety assessment procedure in the new BS 7910:2013+A1:2015 for cracked uni-planar square hollow section (SHS) T-, Y- and K-joints using the finite element analyses. The procedure is based on the failure assessment diagram (FAD) method. A completely new and robust finite element mesh generator is developed, and it is validated using the full-scale experimental test results. FAD curves are constructed using the elastic J-integral ((Formula presented.)), the elastic-plastic J-integral ((Formula presented.)) and the plastic collapse load ((Formula presented.)) values calculated using the 3D cracked models of the joints. The results reveal that the standard Option 1 FAD curve of the new BS code is not always safe in assessing the safety and integrity of cracked uni-planar SHS joints. Therefore, a penalty factor of 1.2 for plastic collapse load is recommended to move all the constructed Option 3 FAD curves above the standard Option 1 curve. The new Option 3 FAD curves are found to generate optimal solutions for cracked uni-planar SHS T-, Y- and K-joints.

AB - This paper covers the validation of standard safety assessment procedure in the new BS 7910:2013+A1:2015 for cracked uni-planar square hollow section (SHS) T-, Y- and K-joints using the finite element analyses. The procedure is based on the failure assessment diagram (FAD) method. A completely new and robust finite element mesh generator is developed, and it is validated using the full-scale experimental test results. FAD curves are constructed using the elastic J-integral ((Formula presented.)), the elastic-plastic J-integral ((Formula presented.)) and the plastic collapse load ((Formula presented.)) values calculated using the 3D cracked models of the joints. The results reveal that the standard Option 1 FAD curve of the new BS code is not always safe in assessing the safety and integrity of cracked uni-planar SHS joints. Therefore, a penalty factor of 1.2 for plastic collapse load is recommended to move all the constructed Option 3 FAD curves above the standard Option 1 curve. The new Option 3 FAD curves are found to generate optimal solutions for cracked uni-planar SHS T-, Y- and K-joints.

KW - failure assessment diagram

KW - finite element analysis

KW - square hollow section joints

KW - surface crack

UR - http://www.scopus.com/inward/record.url?scp=85049575729&partnerID=8YFLogxK

U2 - 10.1007/s00419-018-1423-5

DO - 10.1007/s00419-018-1423-5

M3 - Article

AN - SCOPUS:85049575729

SP - 1

EP - 11

JO - Archive of Applied Mechanics

JF - Archive of Applied Mechanics

SN - 0939-1533

ER -