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Abstract：
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On geometric method of blank expanding in shallow rectangular shell,deformation and grids variation in drawing operation of rectangular shell were analyzed.The design requirement and deforming condition of rectangular box were stated.Based on Bézier curve,a calculation of blank expanding on straight sides in shallow rectangular shell was presented,and blank expanding curve of calculation was agreed well with that of the geometric method.According to the equal area before and after drawing,the areas of blank expanding are very approx.The calculation of blank expanding is useful for application.
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Funds：
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浙江省科技计划项目(2006C21052)
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AuthorIntro：
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Reference：
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