Springback compensation in formed sheet metal parts
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United States of America Patent
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Mar 20, 2018
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app pub date -
Dec 13, 2013
filing date -
Nov 12, 2013
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Abstract
Finite element methods for compensating for springback in aircraft parts meet the visual appearance and aerodynamics of complex parts including those made of fabricated sheet metal. The methods can be used to make narrow parts (e.g., leading edge and slats) and double negative curvature parts, and do not need to leave marks on the surface of the sheet so that visual aspects are not adversely affected. The point to point compensation technique uses approach equations with constants adjustable for curves. The constant(s) used depend on geometry and type of forming (e.g., stretch or hydraulic press). Use of mechanical properties of the material is not required.
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