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A forming limit diagram, also known as a forming limit curve, is used in sheet metal forming for predicting forming behavior of sheet metal. [1] [2] The diagram attempts to provide a graphical description of material failure tests, such as a punched dome test. In order to determine whether a given region has failed, a mechanical test is performed.
Creation of Forming Limit Curves, FLC Comparison of measured deformations to the material characteristics by means of a Forming Limit Diagram . The optical forming analysis with Forming analysis system provides for precise and fast measurement of small and large components using a high scanning density.
Forming limit diagrams are often used to graphically or mathematically represent formability. It is recognized by many authors that the nature of fracture and therefore the Forming limit diagrams are intrinsically non-deterministic since large variations might be observed even within a single experimental campaign. [4]
Download as PDF; Printable version; ... Pages in category "Metal forming" ... Forming (metalworking) Forming limit diagram; Friction extrusion; G.
Today the metal forming industry is making increasing use of simulation to evaluate the performing of dies, processes and blanks prior to building try-out tooling. Finite element analysis (FEA) is the most common method of simulating sheet metal forming operations to determine whether a proposed design will produce parts free of defects such as fracture or wrinkling.
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At the initial meeting the purpose was enlarged to do cooperative research on tests, materials, and processes. Such work included for example, methods for determining the strain hardening exponent n, the anisotropy-values (lankford coefficient), as well as other tests for sheet metal formability and, later, forming limit diagrams. [2]