During the past 20 years, stamping simulation has brought tremendous change to the way stamping processes are defined and validated, stamping tools are designed and built, and stampings are produced. Without state-of-the-art simulation tools, today’s complex stampings using high-tech sheet…

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“If at first you don’t succeed, try, try again.” Systematic process improvement, as described in several previous posts (Adjusting complex process variables: Drawbead shapes, Virtual Tryout or Process Engineering?,What is passing?, In the rearview mirror, Infinitely adjustable presses, when should…

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AutoForm Technical Seminars 2016 were held in the major automotive hubs of China in Shanghai, Guangzhou, Changchun and Beijing in November. The aim was to link expertise from AutoForm with expertise from the Chinese market. An impressive number of 229…

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What is passing?

After the recent posts on failure prediction based on FLCs, several inquiries arrived through the blog and social media, regarding interpretation of other outputs for predicting failure modes. Commenters wanted to know the values, for various result variables, that might define…

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In Finite Element Analysis, it is common to treat the metal restraint due to draw beads as numerical factors applied along a curve or set of curves. The use of these factors makes defining boundary conditions simple and computationally effective….

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We had the honor to be selected as the computer simulation partner for a recent Auto/Steel Partnership (A/SP) study that considered the feasibility of using higher strength and advanced high-strength steels to achieve weight reductions of hemmed closure panels: project…

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The Formability of sheet metals Previous posts Materials Matters- “The known unknowns”  and “Material plasticity visualized” covered the general aspects, common terminology, and formulation of the plastic properties in sheet metal forming problems. Accurate definition of flow curves, kinematic hardening…

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Lately, one of the most frequently asked questions in metal forming simulation has been “Can your software model the effects of a servo press?” The answer to this question has been YES and NO. It’s YES because, with most metal…

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In our previous post on the stamping system, several environmental variables within production sheet metal stamping are mentioned. In that post we listed variables such as blank surface, blank coating, tool surface, tool coating, and blank/die lubrication. These variables are…

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As already discussed in Sheet metal plasticity visualized (part one) there are four main components needed to model the plastic deformation of sheet metals: yield function, hardening model, flow rule, and failure model. We have expanded our discussion of the…

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