ncremental sheet forming (ISF) is one the manufacturing methods for sheet metal parts which has an increased rate of flexibility combined with relatively simple and cheap common technological ...equipment. This paper presents the results of researches on ISF performed on a CNC lathe, for thin sheet parts made of DC04Am mild steel. The main objective of the paper was to establish the maximum wall angle of the parts and its dependence on the main parameters of the process: thickness and diameter of the part, the tool radius, the feed rate, the spindle speed and the lubricating/cooling conditions. The tests were performed with original equipment designed by the authors and the results were commented and presented in diagrams and images of the parts. The main conclusion is that ISF on a CNC lathe can be successfully used for manufacturing conical shaped parts made of mild steel thin sheet, having a certain maximum angle of the parts wall, for small sized batches. The limit values of the parameters analyzed are a useful technological database for engineers.
Realistic Skeleton Driven Skin Deformation Yang, X. S.; Zhang, Jian J.
Computational Science and Its Applications – ICCSA 2005,
2005
Book Chapter, Conference Proceeding
Peer reviewed
Skeleton driven animation is a popular method for the animation of deformable human and creature characters. The main advantage is its computational performance. However it suffers from a number of ...problems, such as collapsing elbow and candy wrapper joint. In this paper, we present a new method which is able to solve these defects; reduce the animator’s manual work still allowing his/her full control over the process; and realistically simulate the fat bulge effect around a joint.
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FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Low impedance restricted earth fault protection is one of the protection functions to protect the transformer winding with earthed star point. This paper presents a critical comparison of restricted ...earth fault between General Electric algorithm and Siemens Algorithm. Advantages and disadvantages of selected algorithms are investigated based on speed, sensitivity and security. The relay operation characteristic curves and restraint currents for each of algorithms are simulated by MATLAB SIMULINK.
