The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Solder is widely used in electronic packaging to connect die and substrate in die attach process. It is important to get a uniform solder distribution to provide good electrical conductivity, mechanical support as well as excellent thermal properties for packages, especially for power packages with high current densities. While nonuniform solder distribution would emerge when die moves and tilts in...
This paper focuses the development of a three dimensional numerical model to simulate the behaviour of geocell reinforced sand using PLAXIS 3D. Numerical modeling of the geocell has been an immense challenge due to their curved shape. Most of researchers used equivalent composite approach (ECA) to model the geocells. However, the composite method has a number of limitations, including the disregard...
This paper presents results of fracture tests on Multilayer Ceramic Capacitors (MLCCs). Fracture mechanical calculations were carried out with ANSYS in order to analyse the experimental values of fracture strength for the tested MLCCs. Subsequent metallographic analyses were used to get a precise picture of the origin and the propagation of the crack through the component.
In Non Destructive Testing (NDT), the system to scan experiences mechanical and thermal constraints. The shape of crack in the system can not be predicted. A stochastic model for the shape of the crack has been combined with a numerical model based on the solution of the Maxwell equations in quasistatics using the finite element method. In these conditions, a Monte Carlo Simulation Method has been...
Many industries require transferring objects from conveyors to a processing line at production rate. In food processing, grasping mechanisms with highly damped compliant fingers must be capable of accommodating a limited range of object shapes/sizes without causing damages on the products being handled. Most existing models, however, are inadequate to predict the dynamics of a compliant mechanism...
In this paper we propose a numerical modeling of magnetic properties of ferromagnetic shape memory alloys (FSMAs). In order to utilize the engineering modeling in numerical simulations for designing new magnetic actuators, relationship among stress, temperature and magnetic properties of FSMAs was measured and modeled with an arc-tangent function. The modeling was applied to analyze a simple example...
The risk of rupture for advanced level of aneurysm is very much investigated by medical practitioners and researchers. Numerical modelers have also been contributing to the prediction of this rupture. In this study, the effect of various physiological and physical conditions to the increased of the risk rupture is investigated. This study uses simplified model of aneurysm based on actual shape for...
In order to solve a series questions at present existing in machining technology of the disc with complex shape such as long process flow, great affects among working procedures and high cost, according to the outline of the part, the drawing process has been finished by one process instead of two, which is on the basic of the finite element numerical simulation and the experiment on simple dies....
Two kinds of experimental dies containing class "A" surface feature of auto body outer panel are designed and manufactured in order to emerge the surface wrinkle of auto body panel. By doing stamping experiment in the dies, the wrinkling phenomenon is observed. At the same time, numerical simulation based on an independently developed commercial CAE software KMAS/UFT of sheet metal forming...
Several models for steady laminar flow in short and long microchannels of arbitrary shape and aspect ratio are reviewed. The equivalent rectangle model of Muzychka and Yovanovich with the effective aspect ratio accurately predicts over 700 numerical and analytical data for fully developed flow for many non-circular microchannels. All data lie within plusmn5% of the curve for the rectangle. The general...
This paper presents a new technique to generate triangular mesh surface parameterization and characterize 3-D surfaces by invariant spherical harmonic shape descriptors of objects with spherical topology. First, the surface is initially parameterized by defining a continuous one-to-one mapping from the surface of the object to the surface of a unit sphere. Then, the initial parameterization is optimized...
The fluid flow in the fluid jetting dispenser was analyzed. We present a Numerical study of the jetting process using ANSYS fluid-structure interaction (FSI) analysis tools. The effects of gap between ball-needle and wall, the diameter of fluid chamber, the shape of the needle, the separation angle of dispensing body and the diameter of nozzle etc to mass flow rate are described. The calculation formula...
Image inpainting provides a means to restore damaged region of an image, such that the image looks complete and natural after the inpainting process. This paper presents a new inpainting algorithm, which implements the filling of damaged region based on morphological erosion and structure feature replication. The method, which is based on a structure/texture feature matching algorithm, can retain...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.