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Within the modeling design in discrete element method, there is always the modeling problem of complex particle which can not meet the needs of design requirements through approximation modeling of CAD primitive. This paper will explore a method to design an algorithm by filling equal radius balls inside the complex particle along their outer boundary and use simple geometrical shape in modeling instead...
This paper presents an analysis of planar magnetic element configurations in order to reduce capacitive couplings between the windings. The investigation and simulation results, both 2D and 3D Finite Element (FE) show the effect of shifting the planar layers in reduce the capacitive couplings. The simulation results are compared with test results to validate the proposition.
This paper deals with the development of performance analysis tools for axial flux permanent magnet machines. Modeling with 3D Finite Element Method (FEM3D) software could take too much time, and both the definition and the problem solving may be very arduous. In this work an analysis method for axial flux machines is proposed. This method consists in the combination of FEM2D simulations in the average...
3D entity model with the data structure of regular hexahedron, which is usually called as 3D regular block model, is now widely used in many domains such as resources estimation (RE) and finite element analysis (FEA) etc. In these domains, each regular hexahedron element of a 3D entity should be respectively evaluated with spatial related properties. However, 3D entity models are usually constructed...
3D Terrestrial Laser Scanning (TLS) facilitates survey campaign which is essential step for point cloud data acquisition and further research. IRIS-3D, one typical media of TLS, has been widely applied to comprehensive fields such as commercial survey, engineering, mining and industrial markets. The process of three dimensional surface modeling (3DSM) was elaborated and quantification for different...
The rapid design system for the telescopic boom of truck-mounted crane is introduced. The architecture, implementation method and key technologies of the system are described. By applying the CBR (Case-Based Reasoning) technology as a new branch of AI to the design of the telescopic boom of truck-mounted crane, the design process of the boom is studied based on CBR. The three-dimensional parametric...
For the purpose of building high-speed Locomotive Traction Gear parametric solid modeling and promoting calculation accuracy of gear's strength, this paper provides a method of parametric solid modeling of involute helical gear, and builds the parametric solid model of a kind of locomotive traction gear and two kinds of improved models by modifying the basic parameters of gear, and then imports ANSYS...
Visualization Toolkit(VTK) is an open-source, cross-platform system that provides developers with an extensive suite of software tools for scientific visualization. In this paper, we first describe some basic concept, including dataset, pipeline, and common algorithm. Then we give some applications in medical imaging, computational fluid dynamics, finite element analysis and modeling.
This paper considers analytical and numerical techniques to model the magnetic field distribution in a tubular actuator with skewed permanent magnets (PMs). The analytical solution is obtained by solving the magnetostatic Maxwell equations in terms of the scalar potential for the 3D geometry. The 3D analytical solution is compared with 2.5D analytical solutions as well as 3D finite element solutions...
A three-dimensional mechanical-electrical-thermal coupled model is presented and validated both numerically and experimentally on a classical sphere-plane contact problem. The proposed approach combines a innovative Cell Method (CM) approach for the thermal-electrical analysis with a conventional FEM code for the mechanical analysis. Surface roughness and contact spot density are modeled by means...
Models and results are presented of thermomechanical simulations of an RF-MEMS 0-level package based on wafer bonding by soldering. For moderate realistic loads most relevant responses are accetable. However, residual stress and thermal expansion of the solder material lead to deformations beyond the yield strain in corners of solder cross sections. This phenomenon can only be addressed by technology...
This paper deals with reduction design of eddy current loss in interior permanent magnet synchronous motor (IPMSM) using response surface methodology (RSM). In order to reduce computation time, 2D analysis which based on the eddy current loss is proportional to square of flux density and frequency, is firstly applied. The peak to peak value of flux density and total harmonics distortion of flux density...
The method of creation of 3D hybrid numerical-analytical models of electromagnetic screens, containing inhomogeneities of types, "orifice" and "chink" has been developed. The customized software for solution of the analytical part of the hybrid model with by means of advanced method has been worked out. The comparative analysis of efficiency of 3D hybrid and numerical models with...
Considering the advantage that 3D geologic model can better reflect the actual geological conditions, a new and practical modeling method (Geologic Model Transforming Method) was presented. The new modeling thought was that the initial surface model formed with geologic model was transformed into the numerical model. In this method, the key techniques of region cutting, surface model reconstruction...
Element method model construction, a new approach for product modeling, is to positively impact on the front-end modeling methods for product design through boundary-lines of design deriving from progressive constraints on different parameter conditions.
An accurate and efficient equivalent beam model(EBM) for a planar compliant mechanism with ellipticalflexure hinges is presented. First, based on 3D finite element analysis (FEA) for one-eighth of a single elliptical flexure hinge, a set of fictitious beams with identical stress and stiffness characteristics is derived. Then the static and dynamic performances of an eight-bar compliant mechanism with...
To better understand the relationship between the sound conduction system's structure and function, the authors developed a virtual platform that integrates 3D reconstruction and finite element modeling of the peripheral auditory organ to simulate biomechanical behavior of the middle and inner ear.
In the paper a permanent magnet axial flux disc generator (AFPMG) with fractional slot pitch winding for small wind energy applications is proposed. Its main features are high specific power, very low torque ripple and a quasi-sinusoidal output voltage. A preliminary design can be carried out by a simplified analytical procedure. Afterwards, an automated sequence of magnetostatic FEM analyses on rectified...
The development of computer-aided engineering workstations has raised many new issues not previously encountered in design-drafting systems. Consider, for example, mechanical design. Most turnkey mechanical CAD systems simply provide computer-aided artwork. Their success in the marketplace is based on the relatively standardized drafting conventions followed across the industry. Therefore, extensive...
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