Analysis of Fukui’s Conical Cup Test
نویسنده
چکیده
Fukui’s conical cup test is the one of the formability characteristics evaluation for various sheet metals. The formability characteristics such as diametrical ratio, maximum drawing load, depth of cup up to fracture are to be evaluated. This test is related to drawing test. This test can be performed by using parameters such as friction, process parameters and without blank holder. In fukui’s conical cup drawing test a single specimen with dimensions drawn into conical cup until the fracture is occurred at the bottom of cup by help of flat cylindrical punch and without using the blank holder. The base diameter of fracture conical cup is used to determination of diametrical Ratio. The diametrical ratio is the ratio between base diameter of fracture of conical cup with respect to outer edges of cup to original blank diameter. This indicates formability of sheet metals through this test. So formability can be represented as formability index. Hence the formability index expressed as diametrical ratio.The smaller the value of diametrical ratio the better is the formability of sheet metal as per fukui’s test. In this test the formability characteristics of sheet metals such as alloys of aluminum alloy, mild steel alloy and cartridge brass are studied through finite element analysis.
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