Finite element analysis of combined forming processes by means of rate dependent ductile damage modelling
Finite element analysis of combined forming processes by means of rate dependent ductile damage modelling
复制标题
通过速率相关延性损伤模型对组合成形过程进行有限元分析
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
M. Stiemer
中科院分区：
文献类型：
--
作者：
Y. Kiliclar;I. Vladimirov;S. Wulfinghoff;S. Reese;O. Demir;C. Weddeling;A. Tekkaya;M. Engelhardt;C. Klose;H. Maier;M. Rozgic;M. Stiemer
金属板料成形是当今生产工业的一个固有部分。一个主要的目标是增加经典的深拉工艺的成形极限。实现这一点的一种可能性是将常规准静态（QS）成形工艺与电磁高速（HS）后成形相结合。这项工作的重点是这种组合成形过程的有限元分析，以证明可以实现的改进。为此，代表不同工作领域的不同机构建立了合作关系。材料表征是基于流动曲线和成形极限曲线的低和高应变率获得的新的测试设备。对十字形杯形件的纯准静态成形和准静态电磁成形工艺进行了进一步的实验研究。虽然有效的数学优化算法支持新的粘塑性韧性损伤模型，以找到最佳参数的基础上的实验材料表征的结果，整个过程链的研究通过电磁-机械有限元分析。材料模型的本构方程以显式的方式集成，并作为用户材料子程序实施到商业有限元软件包LS-DYNA中。
Sheet metal forming is an inherent part of todays production industry. A major goal is to increase the forming limits of classical deep-drawing processes. One possibility to achieve that is to combine the conventional quasi-static (QS) forming process with electromagnetic high-speed (HS) post-forming. This work focuses on the finite element analysis of such combined forming processes to demonstrate the improvement which can be achieved. For this purpose, a cooperation of different institutions representing different work fields has been established. The material characterization is based on flow curves and forming limit curves for low and high strain rates obtained by novel testing devices. Further experimental investigations have been performed on the process chain of a cross shaped cup, referring to both purely quasi-static and quasi-static combined with electromagnetic forming. While efficient mathematical optimization algorithms support the new viscoplastic ductile damage modelling to find the optimum parameters based on the results of experimental material characterization, the full process chain is studied by means of an electro-magneto-mechanical finite element analysis. The constitutive equations of the material model are integrated in an explicit manner and implemented as a user material subroutine into the commercial finite element package LS-DYNA.
影响因子：
9.8
作者：
N. Tutyshkin;W. Müller;R. Wille;M. Zapara
通讯作者：
N. Tutyshkin;W. Müller;R. Wille;M. Zapara
影响因子：
9.8
作者：
Bruenig, Michael;Gerke, Steffen;Hagenbrock, Vanessa
通讯作者：
Hagenbrock, Vanessa