Titlebook: Research on Mathematics Textbooks and Teachers’ Resources; Advances and Issues Lianghuo Fan,Luc Trouche,Jana Visnovska Book 2018 Springer I

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s methods based on the Tresca criterion, the Huber-von Mises criterion and the twin-shear yield criterion are special cases of the unified characteristics field theory. The unified characteristics field theory for plane stress problems will be described in next chapter.

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hear-stress will have to continue, and has become an interesting as well as significant topic for scholars..Strength theory deals with the yield of materials under the complex stress state. It is difficult to find a general law for the varieties of yield of materials under the complex stress. Howeve

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Helen Siedel,Andreas J. Stylianidest the book unifies and generalizes notions, definitions and results that exist for quadrangles, hexagons, octagons - in the literature very often considered separately - to polygons. Many alternative viewpoints given in the book heighten the sense of beauty of the subject and help to provide further

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ov (1971), Martin (1973), Yan (1988) and Panoyotomakos (1999). A new characteristics method for plane stress problems was established based on the twin-shear yield criterion by Yan and Bu in 1993 and 1996. The three different characteristic methods based respectively on the twin-shear yield criterio