In the current work, to predict and improve the formability of deep drawing process for steel plate cold rolled commercial grade （SPCC） sheets, three parameters including the blanking force, the die and punch comer ...In the current work, to predict and improve the formability of deep drawing process for steel plate cold rolled commercial grade （SPCC） sheets, three parameters including the blanking force, the die and punch comer radius were considered. The experimental plan according to Taguchi＇s orthogonal array was coupled with the finite element method （FEM） simulations. Firstly, the data from the test of stress-strain and forming limit curves were used as input into ABAQUS/Explicit finite element code to predict the failure occurrence of deep drawing process. The three parameters were then validated to establish their effects on the press formability. The optimum case found via simulation was finally confirmed through an experiment. In order to obtain the complex curve profile of cup shape after deep drawing, the anisotropic behavior of earring phenomenon was modeled and implemented into FEM. After such phenomenon was correctly predicted, an error metric compared with design curve was then measured.展开更多
The article by Jinghai Li in this issue of Engineering[1] calls for a new approach to how we organize science and technology （S＆T）, given that we are encountering more challenges than solutions. His paper is a plea...The article by Jinghai Li in this issue of Engineering[1] calls for a new approach to how we organize science and technology （S＆T）, given that we are encountering more challenges than solutions. His paper is a plea and a demand for more transdisciplinary ap- proaches to solving real-world, complex challenges, in the light of the reductionist approach that results in disciplines splintering into ever tighter groupings. His own approach of using mesoscale considerations to link the microscale and macroscale has been demonstrably successful over many years.展开更多
基金Project(107.02-2013.01)supported by the Vietnam’s National Foundation for Science and Technology Development
文摘In the current work, to predict and improve the formability of deep drawing process for steel plate cold rolled commercial grade （SPCC） sheets, three parameters including the blanking force, the die and punch comer radius were considered. The experimental plan according to Taguchi＇s orthogonal array was coupled with the finite element method （FEM） simulations. Firstly, the data from the test of stress-strain and forming limit curves were used as input into ABAQUS/Explicit finite element code to predict the failure occurrence of deep drawing process. The three parameters were then validated to establish their effects on the press formability. The optimum case found via simulation was finally confirmed through an experiment. In order to obtain the complex curve profile of cup shape after deep drawing, the anisotropic behavior of earring phenomenon was modeled and implemented into FEM. After such phenomenon was correctly predicted, an error metric compared with design curve was then measured.
文摘The article by Jinghai Li in this issue of Engineering[1] calls for a new approach to how we organize science and technology （S＆T）, given that we are encountering more challenges than solutions. His paper is a plea and a demand for more transdisciplinary ap- proaches to solving real-world, complex challenges, in the light of the reductionist approach that results in disciplines splintering into ever tighter groupings. His own approach of using mesoscale considerations to link the microscale and macroscale has been demonstrably successful over many years.
