FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, particularly, to defining parameters of bending sections, e.g. rolled stock, welded beams. Bending and contracting forces are applied to section wall. In allowing for section wall axial contraction, relative bending force and resilience curvature are decreased to three times compared with simple flexure. In applying bending force to section flange displacing neutral stress and strain axis from section flange, relative bending force and resilience curvature are increased to 2.5 times compared with simple flexure without allowance fro contact strains. In applying bending force to section flange displacing neutral stress and strain axis toward section flange, relative bending force and resilience curvature are increased by 15% compared with simple flexure without allowance fro contact strains.
EFFECT: higher quality of bending.
1 dwg
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