新聞資訊
5052鋁合金沖壓成形過程中韌性斷裂的仿真研究
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-12-03
對5052鋁合金進行單向拉伸試驗，使用試驗曲線擬合Voce模型參數。觀察拉伸試樣斷口形貌，并使用光學顯微鏡測量拉伸試樣斷口的最小厚度。結合單向拉伸仿真和試驗結果，求解得到Cockcroft-Latham 韌性斷裂準則中的材料參數。將Voce 模型和Cockcroft-Latham 韌性斷裂準則引入球頭脹形仿真，并進行試驗對比。
5052鋁合金沖壓成形過程中韌性斷裂的仿真研究Bulging simulation of ductile fracture of 5052 aluminum alloy
?對5052鋁合金進行單向拉伸試驗，使用試驗曲線擬合Voce模型參數。觀察拉伸試樣斷口形貌，并使用光學顯微鏡測量拉伸試樣斷口的最小厚度。結合單向拉伸仿真和試驗結果，求解得到Cockcroft-Latham 韌性斷裂準則中的材料參數。將Voce 模型和Cockcroft-Latham 韌性斷裂準則引入球頭脹形仿真，并進行試驗對比。結果表明：采用該擬合的Voce 模型和Cockcroft-Latham韌性斷裂準則預測所得零件開裂位置和裂口形狀與試驗結果吻合，采用的基于有限元仿真與簡單試驗相結合的材料參數反求方法具有求解方便、計算精度高的優點。
The uniaxial tensile tests were conducted on 5052 aluminum alloy and Voce model parameters were determined by fitting with the experimental curves. The fracture surface was observed and the minimum thickness of it was measured with optical microscope. The material parameter of Cockcroft-Latham ductile damage criteria was achieved through uniaxial tensile simulation and test results. voce model and Cockcroft-Latham ductile damage criterion were introduced into the numerical simulation of spherical bulging and simulation approach was employed to compare with the experimental results. The results show that the position and shape of the fracture surface simulated with Voce model and Cockcroft-Latham ductile damage criteria are in good agreement with the experimental ones. The method of material parameters identification based on finite element simulation and simple tests has high accuracy and can be applied conveniently.
獲取更多我們供應的合金和服務信息，請致電086-021-67660801或發電子郵件kefu@ailiaigroup.com聯系我們，您也可以通過微博和微信和我們互動。
For more information on the alloys and services that we supply,?call us?at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on?Weibo?and?Weixin.