Simulation of Contact Pressure in Sheet Metal Trimming/ Blanking Process
In the car body stamping process, trim/blank die cutting edges are subjected to very high tribological loads that result in loss of tool material from both the punch and die cutting edges. According to Archard’s wear model, normal contact force and sliding distance directly affects the wear. Therefore, knowledge of the acting forces on local contact areas has a pivotal role towards the prediction of tool wear. This paper presents a finite element modelling approach to determining the contact pressure distribution on the tool cutting edges during a trimming/blanking process. Characteristic areas on sheared edge profile, variation of punch force and high contact pressures affected areas have also been analysed.
Xiaozhi Hu, Brent Fillery, Tarek Qasim and Kai Duan
R. Rafiee et al., "Simulation of Contact Pressure in Sheet Metal Trimming/ Blanking Process ", Advanced Materials Research, Vols. 41-42, pp. 463-468, 2008