Finite element analysis of deep drawing and hole flanging processing of an oil filter cover

Trial and error is a tedious way of working which has been implemented for long time in the sheet metal forming processing. Finite Element Analysis (FEA) is one of the most advanced solutions that can eliminate time and money consumption. The present investigated part is an oil filter cover and contains outer flange processed by deep drawing and inner flange processed by hole flanging. Inner flange ripping usually happens on the rim. Both flanging techniques have been analyzed by FEA. Failure modelling according to three damage theories was applied to detect reasons of inner flange ripping. Metal simply cannot withstand elongation required for hole flanging. FEA proposed deep drawing technique of the inner flange followed by hole piercing and finally deep drawing is used for outer flange.