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In this paper, the mechanical properties of Tailor Rolled Blank (TRB) transition region was investigated By establishing a true stress-strain constitutive model of the TRB transition region. Firstly, the stress-strain curve obtained by uniaxial tensile test of 1mm, 2mm thick plates is subjected to regression analysis. Based on Ludwig equation, the true stress-strain constitutive equations of 1mm and 2mm thick plates were obtained. Then, The true stress-strain constitutive equation of TRB transition region was established by interpolation method combined with 1mm, 2mm thick plate constitutive equation, volume invariance theory and Von-Mises equivalent strain.Finally, the accuracy of the model is verified by simulation and experimental comparison. The results show: A new constitutive model of TRB was established, which is well responsed to the mechanical properties of the transition region.

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We give new realizations of the maximal Satake compactifications of Riemannian symmetric spaces of noncompact type as orbit closures inside Grassmannians and orthogonal groups. Our constructions are partially motivated by Poisson geometry.