岳文霞. 横观各向同性板拉深板厚增量与 织构系数的定量关联[J]. 工程力学, 2014, 31(7): 239-244. DOI: 10.6052/j.issn.1000-4750.2013.01.0014
引用本文: 岳文霞. 横观各向同性板拉深板厚增量与 织构系数的定量关联[J]. 工程力学, 2014, 31(7): 239-244. DOI: 10.6052/j.issn.1000-4750.2013.01.0014
YUE Wen-xia. THE DRAWING THICKNESS INCREMENT AND QUANTITATIVE-CORRELATION TEXTURE COEFFICIENT FOR A TRANSVERSE ISOTROPIC PLATE[J]. Engineering Mechanics, 2014, 31(7): 239-244. DOI: 10.6052/j.issn.1000-4750.2013.01.0014
Citation: YUE Wen-xia. THE DRAWING THICKNESS INCREMENT AND QUANTITATIVE-CORRELATION TEXTURE COEFFICIENT FOR A TRANSVERSE ISOTROPIC PLATE[J]. Engineering Mechanics, 2014, 31(7): 239-244. DOI: 10.6052/j.issn.1000-4750.2013.01.0014

横观各向同性板拉深板厚增量与 织构系数的定量关联

THE DRAWING THICKNESS INCREMENT AND QUANTITATIVE-CORRELATION TEXTURE COEFFICIENT FOR A TRANSVERSE ISOTROPIC PLATE

  • 摘要: 板材在拉深过程中,常出现杯壁被拉裂的现象。以前的学者针对这一问题主要致力于改变压边力来防治拉裂的研究。该文首先引入织构系数,然后利用弹塑性力学的相关知识和Hill屈服准则中材料常数与织构系数的关系,推导出板材拉深过程中织构系数与厚度增量的关系式。并经过算例验证该公式的可行性,得出可以通过改变板材的织构系数来降低板材拉深产生破裂的可能性。

     

    Abstract: Sheets would be cracked during their deep drawing. In order to solve this problem, many scholars are mainly devoted to changing the blank-holder force to control the cracks in their published literatures. The paper introduces a texture coefficient and uses elastic-plastic mechanics and the relation between the material coefficient and the texture coefficient of Hill yield criterion to the relation between the texture coefficient and thickness increment during the deep drawing. Then the paper proves the relation through examples, we can reduce the possibility of crack occurrence during the deep drawing by changing the texture coefficient.

     

/

返回文章
返回