Abstract
The gas pressure bulging of metal sheets has become an important forming method. As the bulging process progresses, significant thinning in the sheet material becomes obvious. A prior knowledge about non-uniform thinning in the product after forming helps the designer in the selection of initial blank thickness. This paper presents a simple analytical procedure for obtaining the thinning variation of a superplastically formed Ti alloy spherical dome. The procedure is validated with the existing measured data.
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