A NONSTANDARD SYMMETRY-BREAKING PHENOMENON IN SHEET-METAL STRETCHING

被引：1
|
作者：
HALL, CA
LEI, X
RABIER, PJ
机构：
[1] Department of Mathematics and Statistics, University of Pittsburgh, Pittsburgh
来源：
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | 1994年 / 32卷 / 09期
关键词：
D O I：
10.1016/0020-7225(94)90118-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mathematical models for stamping of metal blanks are based upon the physical principles of equilibrium of forces, material constitutive laws and constraints resulting from contact between the blank and the press itself. We investigate singularities in the differential algebraic equation (DAE) resulting from one such model. In particular, the inability of numerical integrators to preserve anticipated symmetries in its solution as time advances is shown to be due to singularities on or close to the solution curve.
引用
收藏
页码：1381 / 1397
页数：17
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