Numerical analysis of electrodeposited nickel coating in multistage drawing processes

Article Abstract:

The elastic-plastic finite element method of a dynamic explicit algorithm was used to simulate the deep drawing processes of nickel coating electrodeposited on a steel substrate to form an advanced battery shell. The result showed that the nickel coating deforms similarly to the steel substrate, and the thickness variation rule of the nickel coating is consistent with that of the steel substrate, but in the entire drawing process, the substrate bore the main load and the coating bore deformation.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Paint and Coating Manufacturing, Paints and allied products, Electrodeposition Coatings, Primary Nickel, Refined Nickel, Nickel, Mechanical properties, Electrocoatings, Nickel (Metal)

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Strip yield analysis on coalescence of plastic zones for multiple cracks in a riveted stiffened sheet

Article Abstract:

A strip yield model was used to calculate for multiple cracks in a riveted stiffened sheet based on the coalescence conditions of plastic zones. The multiple cracks and their plastic zones were treated as a fictitious crack and algebraic equations were formulated on compatibility of displacements, zero displacement at the coalesced points of plastic zones and no stress singularity at the fictitious crack tips. Numerical results were presented for two cracks in a sheet with and without stiffeners.

Research, Airframes

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Experimental and numerical evaluation of crack arresting capability due to a dimple

Article Abstract:

Crack arresting capability is experimentally examined using center cracked tension specimens and varying the placement of the dimple ahead of the crack tip. It is indicated that the dimple has a benefit only to the repair case after the crack is initiated.

Evaluation, Fatigue testing machines, Materials

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