Fillet effect on the bending crashworthiness of thin-walled square tubes
More details
Hide details
School of Architectural Engineering, Tongling University, Tongling, Anhui, China
School of Rail Transportation, Soochow University, Suzhou, Jiangsu, China
Cheng Li   

School of Rail Transportation, Soochow University, China
Submission date: 2021-09-11
Final revision date: 2021-11-01
Acceptance date: 2021-11-09
Online publication date: 2021-12-17
Publication date: 2022-01-20
Journal of Theoretical and Applied Mechanics 2022;60(1):103–111
Filleting four corners of square tubes is suggested to reduce the peak force and improve energy absorbing performance. Three-point bending tests are conducted to investigate fillet radius effects employing an ABAQUS explicit code. Three cases characterized by the ratio of width to thickness are considered. Fillet greatly reduces the maximum forces compared with square cross-sections, and the normalized maximum forces decrease with increasing wall thickness when the fillet radius is larger. Additionally, the fillet dramatically improves SEA (Specific Energy Absorption). The normalized CFE (Crash Load Efficiency) significantly exceeds that of the square ones, and the normalized CLEs are almost identical with the increasing fillet radius.
Abramowicz W., Jones N., 1986, Dynamic progressive buckling of circular and square tubes, International Journal of Impact Engineering, 4, 4, 243-270.
Chen D.H., Masuda K., 2016, Estimation of collapse load for thin-walled rectangular tubes under bending, Journal of Applied Mechanics, 83, 3, 10-12.
Ding H., Yang Y., Chen L.Q., Yang S.P., 2014, Vibration of vehicle-pavement coupled system based on a Timoshenko beam on a nonlinear foundation, Journal of Sound and Vibration, 333, 24, 6623-6636.
Han D.C., Park S.H., 1999, Collapse behavior of square thin-walled columns subjected to oblique loads, Thin-Walled Structures, 35, 3, 167-184.
Hu W.P., Xu M.B., Song J.R., Gao Q., Deng Z.C., 2021, Coupling dynamic behaviors of flexible stretching hub-beam system, Mechanical Systems and Signal Processing, 151, 107389.
Huang X., Lu G., 2005, Bending hinge characteristic of thin-walled square tubes, International Journal of Crashworthiness, 10, 3, 275-285.
Huang Z., Zhang X., 2018, Three-point bending collapse of thin-walled rectangular beams, International Journal of Mechanical Sciences, 144, 461-479.
Kim H.S., 2002, New extruded multi-cell aluminum profile for maximum crash energy absorption and weight efficiency, Thin-Walled Structures, 40, 4, 311-327.
Kim H.S.,Wierzbicki T., 2001, Crush behavior of thin-walled prismatic columns under combined bending and compression, Computers and Structures, 79, 15, 1417-1432.
Kim T.H., Reid S.R., 2001, Bending collapse of thin-walled rectangular section columns, Computers and Structures, 79, 20-21, 1897-1911.
Langseth M., Hopperstad O.S., 1996, Static and dynamic axial crushing of square thin-walled aluminium extrusions, International Journal of Impact Engineering, 18, 7-8, 949-968.
Lim C.W., Liew K.M., 1994, A pb-2 Ritz formulation for flexural vibration of shallow cylindrical shells of rectangular planform, Journal of Sound and Vibration, 173, 3, 343-375.
Wierzbicki T., Abramowicz W., 1983, On the crushing mechanics of thin-walled structures, Journal of Applied Mechanics, 50, 727-734.
Wierzbicki T., Recke L., Abramowicz W., Gholami T., Huang J., 1994, Stress profiles in thin-walled prismatic columns subjected to crush loading – II Bending, Computers and Structures, 51, 6, 625-641.
Yang X.D., Yang J.H., Qian Y.J., Zhang W., Melnik R.V.N., 2018, Dynamics of a beam with both axial moving and spinning motion: An example of bi-gyroscopic continua, European Journal of Mechanics-A/Solids, 69, 231-237.
Zarei H.R., Kröger M., 2007, Crashworthiness optimization of empty and filled aluminum crash boxes, International Journal of Crashworthiness, 12, 3, 255-264.
Zhang X., Zhang H., Ren W., 2016, Bending collapse of folded tubes, International Journal of Mechanical Sciences, 117, 67-78.
Zhang X., Zhang H., Wang Z., 2016, Bending collapse of square tubes with variable thickness, International Journal of Mechanical Sciences, 106, 107-116.