Test device and method for acquiring limit strain of laser tailor welded plate plane with different thickness
A laser tailor welding and ultimate strain technology, which is applied in the field of sheet metal forming and processing, can solve the problems of poor stability, large workload, and unsuitable tailor-welded blanks with different thicknesses, and achieves easy operation, simple operation, accurate and stable test results. Effect
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[0030] Figure 1-7 As shown, it is the test device for obtaining plane ultimate strain of laser tailor-welded blanks with different thickness proposed by the present invention, which is mainly composed of splint mechanism, segmented clip height difference structure, clamping mechanism and tailor-welded blank plane strain tensile test piece. The splint mechanism is composed of the upper clip 4 and the segmented lower clip 5, the tailor welded blank tensile test piece 8 is located between the upper clip 4 and the segmented lower clip 5, and the splint mechanism can clamp the tailor welded blank for stretching The test piece 8 effectively restricts its shrinkage in the width direction, and produces a plane strain state in the tailor welded blank tensile test piece 8 . The clip 4 and the slide block 3 are threadedly connected, and a height adjustment piece 6 is installed between the subsection lower clip 5 and the base 7, and the subsection bottom clip 5 and the height adjustment ...
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