A finite element based model for the description of aluminium sheet blanking

Quality prediction model of the sheet blanking process for thin phosphorous bronze

“…Lee et al [7] also believed that the sharpness of punch directly affects the burr size of the blank, and a blunt punch results in a large burr. In actual shearing process, observation of the sheared surface of finished products is the most direct and efficient method to evaluate the condition of the machining tool [4]. The precise blanking of material is developed for enlarging the plastic deformation zone of the material.…”

“…Using high-speed punching machine, the metallic terminals are produced by means of progressive die. In the aspect of sheet blanking processing, scholars performed various experiments and induced design principles for process parameter [1][2][3], or adopted finite element method to simulate the shearing process of metals [4][5][6]. However, these researches emphasized the blanking processing of thick sheets, but seldom on thin metallic sheets (below 1 mm).…”

Development of the sheared edge in the trimming of steel and light metal sheet

“…The principal stress distribution within the workpiece during trimming was used in conjunction with the strain distribution calculated by the model for analyzing potential crack propagation paths. The principal stress distribution is an important factor in the analysis since failure in ductile metal shearing processes is attributed to microvoid growth and coalescence, which is most strongly influenced by tensile stresses [14].…”

“…Due to the limitations in analytical modeling, finite element modeling has become an important tool in the automotive industry to cut down on lead-in time for the introduction of new tooling and for process optimization. Finite element modeling has been used to examine such topics as tool life [10,11], optimum clearance [12,13] and prediction of fracture profile in blanking [14]. While accurate sheet metal-forming software and models have been developed, there are still significant issues surrounding process such as shearing, where modeling ductile fracture is a difficult issue [15][16][17].…”

Tool wear investigation on the precision progressive die for the IC dam-bar cutting process

“…Kondo and Suzuki [4] discussed in detail two fine blanking processes, fine blank and opposed dies, which analysed the dishing amount, the variance of sheet thickness and the profile evenness of the sheared surface of the two processes. In addition, a number of researchers have constructed a simulation model of the metal sheet shearing process by finite element methods [5,6,7,8,9,10]. By using the developed model, one may infer the crack start position and the plastic deformation zone of the sheared surface, the influences of punch geometry on the shearing process and the final profile of the sheared products.…”