... sizes continually decrease to under 200 µm in a low-stiffness system. This paper proposes an analytical force model considering the influence of tool radius, size effect, tool runout, tool deflection, and the actual trochoidal trajectories and the interaction of historical tool teeth trajectories (IHTTT...

... dimension control, size effect, and tool wear progression in micromachining of hardened tool steels are experimentally investigated. A strain gradient plasticity model is developed for micromachining of hardened H13 tool steel. Novel 2D finite element (FE) models are developed in software ABAQUS to simulate...

... applications modal analysis sheet metal processing stress-strain relations laser peen forming simulation damping strain rate size effect Laser shock peening (LSP), achieved through the laser induced shock waves, has been proposed as a competitive alternative technology to classical...

...Daw-Kwei Leu This investigation considers the size effect on the deformation behavior of simple tension in microforming and thus proposes a simple model of the tensile flow stress of sheet metal. Experimental results reveal that the measure of the flow stress can be represented as a hyperbolic...

... of the material, as the grain size increased at the miniature scale, was explained by the Hall–Petch relationship and the feature size effect. 12 05 2007 19 05 2008 22 07 2008 metalworking stainless steel microforming coining size effect stainless steel Over the past...

... is dominated by the so-called size effects, e.g., material property and frictional behavior variations at small length scales. In extrusion experiments performed to produce submillimeter-sized pins having a base diameter of 0.76 mm and an extruded diameter of 0.57 mm , the extruded pins exhibited a curving...

...Gap-Yong Kim; Jun Ni; Muammer Koç For the accurate analysis and design of microforming process, proper modeling of material behavior at the micro/mesoscale is necessary by considering the size effects. Two size effects are known to exist in metallic materials. One is the “grain size” effect...

... effects” that tend to be predominant at this length scale. One of the factors that of interest is friction. The two companion papers investigate the frictional behavior and size effects observed during microextrusion in Part I and in a stored-energy Kolsky bar test in Part II. In this first paper, a novel...

... experiments are used to validate the model in terms of cutting forces. The simulation results are then analyzed to identify the contributions of the material strengthening factors to the size effect in specific cutting energy. 09 06 2005 30 11 2005 cutting size effect aluminium alloys...

...Donggang Yao; Byung Kim Miniaturization of injection molded parts causes changes in the relative contribution of relevant design and process parameters. As a result, scaling-related size effects occur. Size effects can be either of the first order or of the second order. First-order size effects...

... for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING . Manuscript received Oct. 1996; revised May 1999. Associate Technical Editor: G. Sathyanarayanan. 01 Oct 1996 01 May 1999 grinding kinematics size effect numerical analysis abrasion The goal of the present...