Download e-book for kindle: Future Communication, Information and Computer Science by Dawei Zheng

By Dawei Zheng

ISBN-10: 1138026530

ISBN-13: 9781138026537

ISBN-10: 1315752298

ISBN-13: 9781315752297

The 2014 foreign convention on destiny conversation, info and computing device technology (FCICS 2014) used to be held may perhaps 22-23, 2014 in Beijing, China. the target of FCICS 2014 was once to supply a platform for researchers, engineers and lecturers in addition to business pros from worldwide to give their learn effects and improvement actions in laptop, community and knowledge know-how and communique Engineering. This convention supplied possibilities for the delegates to interchange new rules and alertness stories head to head, to set up company or study family members and to discover worldwide companions for destiny collaboration. this system consisted of invited classes, technical workshops and discussions with eminent audio system, and contributions to this lawsuits quantity disguise a variety of themes in computing device, community and knowledge know-how and conversation Engineering

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From this figure that the formation is achieved by thinning of the deformation area. Fig. 3 and 4 shows the elastic and plastic strain distribution. It can be seen from these 2 figures that the elastic strain is so small that it can be ignored. The main strain is plastic strain, which mainly appears near the tool head and less deformation at other parts. The maximum deformation lies in the contact point of the tool head and the sheet material, which is the thinnest and is the easiest to evoke tensile rupture.

We establish the FEM simulation model. The sheet is in tension in two directions and in compression in one direction, and the strain in slab thickness direction is very small relative to axial and radial direction, so we simplify the 3-dimensional deforming state into 2-dimensional deforming state for calculation. The simulation result is showed in Fig. 2 to 5. Fig. 2 shows the slap thickness distribution. It can be seen 5 CONCLUSION Sheet metal digital forming technique is a flexible process with no need for special dies, which can 22 greatly decrease the manufacturing cycle and the cost of production by eliminating such time-consuming and capital-wasting steps for the die design, die manufacture, testing and modifying.

It remains to show E char G. By Lemma 5, G ∗ is abelian and either G ∗ is cyclic, or p = 2 and there exists g ∗ ∈ G ∗ with ug = u−1 . In the first case 1 (G ∗ ) = M ∗ , so E = 1 (M ) = 1 (G) char G. In the second 1 (U ) =< u2 >=< [u, g] > and as G ∗ is abelian, G (1) ≤ U . Hence G (1) = 1 (U ) or U , and in either case 1 (U ) char G (1) , so 1 (U ) char G. Therefore E = 1 (CG ( 1 (U ))) char G. [9] [10] [11] [12] [13] ACKNOWLEDGMENTS [14] This work was supported by Natural Science Foundation (13116339) of China; Natural Science Foundation ([2014]2069) of Science and Technology Department of Guizhou; Natural Science Foundation ([2014]712) of Education Department of Guizhou; Hundred of talents project (2012) of Zunyi Normal College.

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Future Communication, Information and Computer Science by Dawei Zheng


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