The Study Of High-strength Steel Π-shaped Stamping Of Springback Based On Numerical Simulation

In recent years, high-strength steels has a large advantage in improving safety and reducing costs compared with other materials, which is widely applied. High-strength steel stamping forming technology can meet energy-saving and environment-friendly and crashing safety requirements, and it has broad prospects for development in a variety of industrial production, such as automotive, aerospace industry.When the sheet metal forming simulation technology is widely used in the field of sheet metal forming analysis, technical analysis using numerical simulation of high-strength steel stamping process, we can more accurately predict the impact of changes in process parameters in sheet metal forming process, and the analysis is based on the process parameters can be optimized for the mold structure stampings meet the product design requirements.In this paper, we use finite element analysis software Dynaform for stamping process Π-shaped piece of numerical simulation results and forming springback analysis, analysis the reasons for the springback and stress resilience of the sheet, by changing the process of the stamping parameters, we can analyze different coefficient of frictions, punching speeds, punch and die gaps, the punch radiuses and the die radiuses the five parameters of Π-shaped pieces, and analyzes the influence of various parameters on the Π-shaped pieces springback. Using the springback Π-shaped piece as a test indicators, friction coefficient, punching speed, punch and die clearance, punch radius, die radius of the five parameters as factors affect the Π-shaped pieces of springback results, then do orthogonal test. By comparing the poor, in the amount of springback index, we can get the influence on the springback of Π-shaped piece of the order is the friction coefficient, die radius, punch radius, punch speed, punch and die gap, we can get a better Π-shaped piece formed result when the friction coefficient of 0.1, punching speed of 4000mm/s, punch and die gap of 1.3mm, punch radius of 0.6mm, die radius of 7mm. We can control springback of Π-shaped pieces by using the method of the mold surface compensation and the drawbead method, through two die surface compensations and setting different drawbead locations, shapes and parameters, the springback of Π-shaped pieces has been effectively controlled.