Energy Absorption Behavior and Application of Thin-walled Box Structure with Higher Strength in Ridgelines Tongji University

Format:

Conference/Event

Author/Creator:

Zheng, Zheng, author.

Contributor:

Dong, Xueqing

Zhu, Xichan

Conference Name:

SAE 2016 World Congress and Exhibition (2016-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractTo overcome some drawbacks of using AHSS (Advanced High Strength Steel) in vehicle weight reduction, like brittleness, spot weld HAZ (Heat Affected Zone) softening and high cost, a new ridgeline strengthening technology was introduced and applied to the thin-walled structure in this paper. The energy absorption mechanism of thin-walled box structure with selective strengthened ridgelines under axial compressing load was discussed in first section. After this, the formulas of mean crushing force and corresponding energy absorption for square tube were theoretically discussed. To demonstrate prediction capabilities of formulas, a set of FE simulations of square tubes were conducted. Simulation results show that energy absorption capacity of square tube under quasi-static axial crushing load is dramatically improved by selectively strengthening their ridgelines. Finally, the ridgeline strengthening technology was applied to front bumper subsystem made of mild steel and its energy absorption capacity was compared with AHSS front bumper subsystem. From the comparison, it was concluded that the thin-walled box structure with selective strengthened ridgelines can replace the AHSS and could be widely used in the vehicle body structure

Notes:

Vendor supplied data

Publisher Number:

2016-01-0398

Access Restriction:

Restricted for use by site license