Chemical organization theory has been proposed to provide a new perspective to study complex dynamical reaction networks. It decomposes a reaction network into overlapping sub-networks called organizations. An organization is an algebraically closed and self-maintaining set of molecular species. The set of organizations form a hierarchical “organizational structure”, which is here a lattice. In...

In nanometer scale static-RAM (SRAM) arrays, systematic inter-die and random within-die variations in process parameters can cause significant parametric failures, severely degrading parametric yield. In this paper, we investigate the interaction between the inter-die and intra-die variations on SRAM read and write failures. To improve the robustness of the SRAM cell, we propose closed-loop ada...

This research presents a novel solution heat treatment hot forming and quenching (SHQ) technique for creating high-strength precise aluminum alloy sheet parts. The study involves three primary parts: characterization of the viscoplastic behavior AA6061-T6 condition, investigation mechanical properties commercially available aged to varying degrees, development hot-forming process compensate poo...

Deformation of the material during cyclic expansion extrusion (CEE) is investigated using upper-bound theorem. The analytical approximation of forming loads agrees very well with the FEM results for different amounts of chamber diameter, friction factor and also for lower die angles. However, the difference between analytical and numerical solution increases at higher die angles which are expla...

In order to optimize the strength-toughness matching of auto body components. Taking B1500HS steel as research object. The influence die temperature on microstructure and properties was studied by hot stamping tests flat die, mechanical observation tests. study shows that is not sensitive below 250°C. When 20–250°C, tensile strength above 1400 MPa, while plastic-toughness poor; 300°C, begins ge...

In this paper, an upper bound approach is used to analyze the extrusion process of bimetallic rods through arbitrarily curved dies. Based on a spherical velocity field, internal, shearing and frictional power terms are calculated. The developed upper bound solution is used for calculating the extrusion force for two types of die shapes: a conical die as a linear die profile and a streamlined di...

Metal forming processes, compared with machining ones, reduce production steps and increase manufacturing speed in addition to saving raw material. In this paper, forming process of column of a steering mechanism is investigated by finite element analyses and experimental tests; and optimum die design parameters are found. Forming process parameters including die opening angle, bearing length, ...

the main purpose of this paper is to introduce and study new classes of soft closed sets like soft regular generalized b-closed sets in soft topological spaces (brie y soft rgb-closed set) moreover, soft rg-closed, soft gpr-closed, soft gb-closed, soft gsp-closed, soft g-closed, soft gb-closed, and soft sgb-closed sets in soft topological spaces are introduced in this paper and we investigat...