The effects of tooling imperfections on the initiation of wrinkling in finite element modeling of a deep drawing process

Article Abstract:

A simulated experiment of finite element based models is used to analyze the result of initial tooling imperfections on the initiation of wrinkling in deep drawing of thick sheet or plate. A qualitative comparison of the resultant observations with experimental forming operations confirms that the wrinkling behavior of the blank in deep drawing process is strongly influenced.

Finite element method

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Wrinkling limit in tube bending

Article Abstract:

A doubly-curved sheet model is generated, which provides the minimum bending radius that eliminates wrinkling in the thin-walled tube bending process. The results of this experiment give a predictive tool for designing/optimizing the tooling parameters in the automobile and aerospace industries.

Stress analysis (Engineering)

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A hybrid approach for quantifying the winding process and material effects on sheet coil deformation

Article Abstract:

Extreme coil deformation can impair smooth handling of a wound or rolled coil and cause problems in mass production. A similar material model based on the internal stress allocation derived from a bi-dimensional winding-analysis model is presented.

Measurement, Deformations (Mechanics), Deformation

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