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Effect of temperature on vacuum hot bulge forming of BT20 titanium alloy cylindrical workpiece WANG Ming-wei(王明伟)1, 2, ZHANG Li-wen(张立文)1, 2, PEI Ji-bin(裴继斌)1, 2, LI Chen-hui(李辰辉)3, ZHANG Fan... parameters for BT20 titanium alloy cylindrical workpiece manufactured by vacuum hot bulge forming. A two-dimensional nonlinear thermo-mechanical coupled FE model was established. Numerical simulation......
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FEM analysis of vacuum hot bulge forming of Hastelloy C-276 thin-walled cylindrical workpieceZHU Zhi(朱智), ZHANG Li-wen(张立文), GU Sen-dong(顾森东) (School of Materials Science and Engineering, Dalian.... The creep constitutive equation set has been integrated with the commercial FE (finite element) solver MSC.Marc via the user defined subroutine, CRPLAW, for the vacuum hot bulge forming process......
Article ID: 1003-6326(2005)05-1009-05 Solution for slab forging with bulge between two parallel platens by strain rate vector inner-product integration and series expansion ZHAO De-wen(赵德文... was developed. First, effective strain rate for slab forging with bulge was expressed in terms of two-dimensional strain rate vector, and its inner-product was integrated term by term. Second, a summation......
Trans. Nonferrous Met. Soc. China 24(2014) 3265-3273 Accuracy analysis of plane-strain bulge test for determining mechanical properties of thin films Lin YANG1,2, Shi-guo LONG1,2, Zeng-sheng MA1,2... on the deformation behavior of thin films in the plane-strain bulge test was systematically scrutinized by performing the finite element analysis, and then the accuracy of the plane-strain bulge test......
Effects of correlative factors on the interdendritic melt flow brought by the bulge in continuous casting slabsShuying Chen1,2), Guowei Chang2), Jianzhong Wang2), and Chunjing Wu1) School... the solid-liquid interface bends periodically, the expression of solute distribution in the columnar crystal zone was deduced, and the quantitative calculation was also made. The results show that the bulge......
Trans. Nonferrous Met. Soc. China 22(2012) s275-s279 Characterization of plastic behaviour of sheet metals by hydraulic bulge test Lucian , Dan-Sorin , Ioan NICODIM, Ioan CIOBANU, Dorel BANABIC CERTETA Research Centre, Technical University of Cluj-Napoca, Cluj-Napoca, Romania Received 28 August 2012; accepted 25 October 2012 Abstract: In the hydraulic bulge tests, dies with both circular......
Microstructure,tensile properties and free bulge formability of Sr-and Y-containing AZ31 alloy sheet produced by twin-roll casting and sequential hot rollingPeng Jiang1,2,Luo-Bin Li1,Yan-Dong...">The effects of Sr and Y on microstructure,tensile property and free bulge formability of AZ31 alloy sheet produced by twin-roll casting and sequential hot rolling were investigated to improve......
, 40136 Bologna, Italy Received 3 May 2019; accepted 4 December 2019 Abstract: The wedge and bulge expansion tests were compared in the assessment of the seam welds strength in a tubular profile extruded at two ram speeds. In the wedge test, the expansion was determined by moving a conical punch into the tube until the specimen fracture. In the bulge test, a hydrostatic tensile stress state......
C-276合金和1Cr18Ni9Ti不锈钢,Hastelloy C-276合金的热导率,比热容,热膨胀系数以及1Cr18Ni9Ti不锈钢的热膨胀系数均由实验测得,其他材料参数则是通过查阅合金手册和用差值算法相结合得到的. 图1 真空热胀形有限元模型 Fig. 1 FE model of vacuum hot bulge forming 2 材料的蠕变本构模型 真...保温温度后,两者的膨胀量不再发生变化. 图2 真空热胀形过程中转子屏蔽套和模具的径向位移变化 Fig. 2 Variation of radial displacement of rotor can and die during vacuum hot bulge forming process 在冷却阶段,随着温度的降低,转子屏蔽套和模具同时收缩,由于模具的膨胀系数大,转......