Drawing simulation by static implicit analysis with the artificial damping method

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Oide, K.^1 ; Mihara, Y.^1 ; Kobayashi, T.^1 ; Takizawa, H.^2 ; Amaishi, T.^3 ; Umezu, Y.^3

Mechanical Design and Analysis Corporation, Fuda Chofu City, Tokyo

182-0024, Japan^1

Nippon Institute of Technology, Miyashiro-machi Minamisaitama-gun Saitama Pref.

345-8501, Japan^2

JSOL Corporation, Tosabori, Nishi-ku, Osaka

550-0001, Japan^3

关键词: Arc length method;    Artificial damping;    Buckling behaviors;    Global solutions;    Inertia effects;    Local instability;    Static problems;    Structural instability;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032039/pdf
DOI  :  10.1088/1742-6596/734/3/032039

来源: IOP

【 摘 要 】

Wrinkling during draw is typically a local instability problem. When the structural instability is localized, there will be a local transfer of strain energy from one part of the structure to neighboring parts, and global solution methods, which is typically represented by the arc length method, may not work. So, this type of problems has to be solved either dynamically or with the artificial damping. On the other hand, the essential nature of the buckling behavior can be regarded as a static problem, even though it may be possible to raise some side issues due to the inertia effect. In this study, we traced the local buckling behavior of anisotropic elasto-plastic thin shells in Numisheet2014 BM4 using the artificial damping method.