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Orthogonalizing Boolean Subtraction of Minterms or Ternary-Vectors

100%
Can Y., Fischer G.
Acta Physica Polonica A
|
2015
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vol. 128
|
issue 2B
B-388-B-391
EN
In this paper, a method called "Boolean subtraction" which enables the subtraction of two minterms and of two functions of the disjunctive normal form respectively of two ternary-vectors and of two ternary-vector-lists is presented. The advantage of "Boolean subtraction" is that the calculated results are already presented in an orthogonal form, which has a significant advantage for further calculations. It replaces two procedures, once building the difference and then the subsequent orthogonalizing and has faster computing time in comparison. Furthermore, another equation is developed from the property of this new method providing orthogonal results in order to orthogonalize functions of the disjunctive normal form.
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Investigation of the Crash Boxes Light Weighting with Syntactic Foams by the Finite Element Analysis

81%
Özer H., Can Y., Yazıcı M.
Acta Physica Polonica A
|
2017
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vol. 132
|
issue 3
734-737
EN
Light-weighting is a new scope in the automotive industry to accommodate new emission regulations. The parts produced with conventional metallic materials are replaced with parts produced by using light weight or high strength materials, to obtain light weighted equivalents of the same strength. Foam core sandwich structures, high strength steels, composite materials are the most used alternative materials. Syntactic foams that show outstanding performance in case of high-speed collisions have an excellent utility as energy absorbers in vehicle crash boxes. Syntactic foams are modeled in crash boxes at various filling rates and filling patterns in the context of this study. As results of the FEM analyses, it is observed that syntactic foams have excellent crash performance, as well as weight-reducing effect in vehicle crash boxes.
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