#5394. Influence of rheological behavior on wall thickness using low-melting alloy for sheet metal forming

July 2026publication date
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Journal’s subject area:
Management Science and Operations Research;
Strategy and Management;
Industrial and Manufacturing Engineering;
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Abstract:
The wrinkling-free forming method for sheet metal forming based on the low-melting alloy (LMA) is a novel sheet forming method. The LMA as a forming pressure medium to transfer loading force is utilized to prevent bulking and wrinkling occurrence in the sheet forming process due to the its controllable fluidity by adjusting the heating temperature. In the forming process, the upper and lower surface of blank were acted by continued loading force resulting from LMA flowing. In this study, the high-temperature mechanical properties of LMA were obtained by heating tensile test for preparation of simulation. The rheological behavior of LMA during the forming process was analyzed numerically. And the effect of LMA layer thickness, forming force and mold structure on the thinning of the formed parts was studied. With obtained results, the characteristic of wall thickness distribution and the effect of rheological behavior on thinning of formed part were comprehensively revealed. Moreover, the experimental results agree with those in numerical simulation by measuring the wall thickness of the formed specimen.
Keywords:
Low-melting alloys; Numerical simulation; Sheet metal; Thickness reduction

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