This paper describes the computations of micro-strains at inner corner of cold formed rectangular hollow sections (CFRHS) made up of structural steels using finite element analysis. In order to obtain the micro-strains, distortion test is simulated by modeling two-dimensional structural steel tubes in ANSYS software. Two dimensional linear static analyses are performed by defining elastic prope...

In this paper we study the problem that when a Boolean function can be represented as the sum of two bent functions. This problem was recently presented by N. Tokareva in studying the number of bent functions [20]. Firstly, many functions, such as quadratic Boolean functions, MaioranaMacFarland bent functions, partial spread functions etc, are proved to be able to be represented as the sum of t...

This paper discusses homogeneous bent functions. The space of homogeneous functions of degree three in six boolean variables was exhaustively searched and thirty bent functions were found. These are found to occur in a single orbit under the action of relabeling of the variables. The homogeneous bent functions identiied exhibit interesting combinatorial structures and are, to the best of our kn...

In this paper, we show the rst method to construct vecto-rial bent functions which satisfy both the largest degree and the largest number of output bits simultaneously. We next apply this method to construct balanced vectorial Boolean functions which have larger non-linearities than previously known constructions.

In the literature, few constructions of n-variable rotation symmetric bent functions have been presented, which either have restriction on n or have algebraic degree no more than 4. In this paper, for any even integer n = 2m ≥ 2, a first systemic construction of n-variable rotation symmetric bent functions, with any possible algebraic degrees ranging from 2 to m, is proposed.

We show how to construct semi-bent Boolean functions from PSaplike bent functions. We derive infinite classes of semi-bent functions in even dimension having multiple trace terms.

The construction of grouting butt joints bamboo tubes is simple and efficient. However, when the joint bent, low tensile strength mortar easily leads to cracking prior failure tube. In this paper, a comparative test bending capacity was performed on reinforced by nonperforated, fully perforated, semiperforated steel plates embedded in obtain load-displacement curves ultimate bearing various spe...

This work introduces an Abaqus CAE simulation model and its validation for freeform bending with movable die, which is extended in the of a weld seam longitudinally welded tube. The superordinate goal development soft sensor, that can derive mechanical properties bent tube as basis closed-loop control. To guarantee close monitoring properties, sensor needs to be able extrapolate spatially. Beca...

We construct two families of binary quadratic bent functions in a combinatorial way. They are self-dual and anti-self-dual quadratic bent functions, respectively, which are not of the Maiorana-McFarland type, but affine equivalent to it.