Jan Roskam's Airplane Design Parts I-VII PDF

By Jan Roskam

A useful encyclopedia of historic plane facts, layout equations and strategies.

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These authors formulate a free energy function that would produce the A-M interface by energy minimization and relate it to crystal structure. In general, as said Bhattacharya [5], a single variant of martensite cannot have a coherent interface with the austenite. However a region consisting of fine twins of two martensitic variants can form a coherent interface with the austenite: Ni-Ti, Cu-AI-Ni (cubic ~ orthorhombic) ... As shown by Hanes [6] a number of alloys such as Cu-AI-Ni (cubic ~ monoclinic) Cu-Zn, CuZn-Al, Cu-Zn-Ga to name of few [7] exhibit an undeformed interface between austenite and a single variant of martensite nevertheless.

Tomita, "Molecular dynamic study on deformation of molecular chains in amorphous polymer", JSMS 7 th Symposium on Molecular Dynamics, pp. 50-55, 2002. Y. Tomita, T. Adachi and S. Tanaka, "Modelling and Application of Constitutive Equation for Glassy Polymer Based on Nonaffine Network Theory", Eur. J. Mech. AlSolids, vol. 16, pp. 745-755,1997 A. S. Argon, "A theory for the low-temperature plastic deformation of glassy polymers", Phil. Mag. Vol. 28, pp. 839-865,1973. M. C. Boyce, D. M. Parks and A.

The tangent model predicts a {1 011 } pole figure with four groups of high intensity areas, including two located along the axis 2. This is absent from the predictions of the variational procedure as well as from the experimental pole figures shown in [8] (and from the finite element simulations in the same reference). A closer analysis of the differences between the two models can be performed by looking at the relative system activity, as defined in [7]. Figure 4 shows that the activity of the prismatic systems, which decreases when compression proceeds, is larger in the tangent model, while that of the basal systems (which increases) is smaller than in the variational model.

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Airplane Design Parts I-VII by Jan Roskam


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