Open AccessDiscussion of Proper Ribs in Hollow Torsion Test using Numerical Method
Author(s) -
Binbin Xu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/3/032116
Subject(s) - torsion (gastropod) , rib cage , structural engineering , torque , stiffness , computer simulation , numerical analysis , mechanics , materials science , engineering , mathematics , physics , anatomy , mathematical analysis , medicine , thermodynamics
In the numerical simulation hollow torsion test, the number of rigid ribs applied on the top surface of the specimen is the key to guarantee the success of the calculation. If the number of rigid ribs is too large, the stiffness difference between the pedestal and the specimen would be too big to get a reliable result. While if the number of ribs is too little, the torque cannot be transferred to the specimen faithfully. A numerical calculation is carried out to determine the suitable number of rigid ribs from the aspects of shear strain, ap-parent mechanical behavior and torque rate and the results show that 6 ribs are suitable for the numerical hollow torsion test.