[1] L XU, W D LI, M WAN et al. Laser bending process of preloaded sheet metal. Proceedings of the Fourth International Conference on New Forming Technology, 21(2015).

[7] F VOLLERTSEN, I. KOMELT, R KALST. The laser bending of steel foils for microparts by the bucking mechanism-a model. Modelling and Simulation in Materials Science and Engineering, 3, 107-119(1995).

[9] Z Q YAO, H SHEN, Y J SHI et al. Numerical study on laser forming of metal panels with pre-loads. Computational Materials Science, 40, 27-32(2007).

[12] A GISARIO, M BARLETTA, C CONTI et al. Springback control in sheet metal bending by laser-assisted bending：Experimental analysis，empirical and neural network modelling. Optics & Lasers in Engineering, 49, 1372-1383(2011).

[13] A GISARIO, M BARLETTA, S VENETTACCI. Improvements in springback control by external force laser-assisted sheet bending of titanium and aluminum alloys. Optics & Laser Technology, 86, 46-53(2016).

[20] J GUO, W D LI, M WAN et al. Design of an innovative laser-assisted four-point bending forming process for high-stiffened structure of aluminum alloy. Optics & Laser Technology, 143, 107-113(2021).

[26] A H ROOHI, M H GOLLO, H M NAEINI. External force-assisted laser forming process for gaining high bending angles. Journal of Manufacturing Processes, 14, 269-276(2012).

[29] X F WANG, D X LIU, W D LI et al. Study of laser bending of a preloaded Titanium alloy sheet. Manufacturing Review, 1, 1-6(2015).