TY - GEN
T1 - Numerical simulation of quasi-static tests of Y-type RHS connections
AU - Zhang, Yang
AU - Wu, Zhenyu
PY - 2011
Y1 - 2011
N2 - Finite element (FE) method for simulating the hysteretic behavior of Y-type RHS (rectangular hollow section) connections accurately is presented in this paper. For analyzing the seismic behavior of tubular structures, quasi-static tests on Y-type RHS connections were carried out by the authors. In the tests, cracks appeared in the chord connecting surface, and extended along the connecting weld between the brace and chord, which caused the performance degradation and failure of the connection. To simulate the damage accumulation of steel and crack propagation, simplified Lemaitre's damage model is incorporated into a constitutive model subroutine in ANSYS. Using the material properties from the tensile test, an approximation method for calculating the damage material parameters is proposed. The quasi-static tests are simulated using above material subroutine. Hysteretic curves from FE analysis agree well with the experimental curves.
AB - Finite element (FE) method for simulating the hysteretic behavior of Y-type RHS (rectangular hollow section) connections accurately is presented in this paper. For analyzing the seismic behavior of tubular structures, quasi-static tests on Y-type RHS connections were carried out by the authors. In the tests, cracks appeared in the chord connecting surface, and extended along the connecting weld between the brace and chord, which caused the performance degradation and failure of the connection. To simulate the damage accumulation of steel and crack propagation, simplified Lemaitre's damage model is incorporated into a constitutive model subroutine in ANSYS. Using the material properties from the tensile test, an approximation method for calculating the damage material parameters is proposed. The quasi-static tests are simulated using above material subroutine. Hysteretic curves from FE analysis agree well with the experimental curves.
KW - Y-type RHS connection
KW - damage evolution
KW - finite element method
KW - quasi-static test
UR - https://www.scopus.com/pages/publications/79959667242
U2 - 10.1109/ICETCE.2011.5775254
DO - 10.1109/ICETCE.2011.5775254
M3 - 会议稿件
AN - SCOPUS:79959667242
SN - 9781457702907
T3 - 2011 International Conference on Electric Technology and Civil Engineering, ICETCE 2011 - Proceedings
SP - 504
EP - 507
BT - 2011 International Conference on Electric Technology and Civil Engineering, ICETCE 2011 - Proceedings
T2 - 2011 International Conference on Electric Technology and Civil Engineering, ICETCE 2011
Y2 - 22 April 2011 through 24 April 2011
ER -