Analytical Models for the Design of High Strength Steel Tailor Welded Blanks

作者：Chen Shui sheng^*; Lin Jian ping; Liu Jing; Wang Bin

来源：Journal of Iron and Steel Research International, 2011, 18: 646-651.

• high-strength steel
• tailor-welded blanks
• prediction model
• synthetic strength

To further reduce the weight of tailor-welded blanks (TWBs) parts, the thicker material of conventional TWBs were replaced by high-strength steel (HSS). However, designers need to determine the thickness of HSS sheet by trial and error, without theoretical foundation. In this paper, analytical models were developed to predict the thickness or the mechanical parameters of HSS sheet. In the case of limit dome height (LDH) tests, simulations and experiments were performed to verify the accuracy of the proposed models in terms of LDH and weld line movement. Comparison to numerical and experimental results demonstrates the accuracy of the methodology. The analytical models can predict the mechanical characteristics or the thickness of HSS sheet used in place of the thicker side of TWBs, which provide designers a valuable tool to design HSS TWBs.

• 出版日期2011-5
• 单位同济大学