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The loading paths are very important for hydroforming results in tube hydroforming, and need to be designed carefully. But the optimal loading paths are difficultly obtained by using empirical, analytical and experimental methods. FE simulation is perceived by the industry to be a cost-effective process analysis tool compared to the conventional hard tooling prototyping. Unfortunately, the prevalent...
In this paper, a novel conical quadrifilar helical antenna for GPS application is presented. The antenna behaves wide beamwidth and circular polarization. Numerical simulations show that the pitch angle and the length of radiating arms are main factors which influence the beamwidth of this kind of antenna. The model antenna designed working at center frequency of 1.5968GHz characterizes: (1) about...
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