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.
The solder joints model structure of SMT has been established. The general rules of three different positions(the shallow surface, the internal and the interface of solder and pad)were discussed. Then, the finite model has been checked by the combination of experiment and simulation. Finally, through the multi points scanning method, the heat source was applied to heat the solder joints, the temperature...
This paper describes a wing mass estimation approach based on a bi-level optimization process and an automated CAD-CAE integration framework. The design framework goes through parametric CAD model generation, aerodynamic load calculation, finite element modeling, structural analysis and sizing. In the lower-level task, the wing box is sized to optimize the structural element thicknesses under a maximum...
The performance characteristics of kagome lattice truss core sandwich panel made of TC4 titanium alloy has been investigated in this paper. The sandwich panel was fabricated using 3D printing technology and test in out-of-plane compression. The compressive stiffness and the maximum capacity of compressive load were obtained through experiments. The plastic bending deformation of the strut members...
The ANSYS finite element software of high computational accuracy was used to perform joint simulation for asynchronous motors. The Maxwell 2D finite element model of 7.5kW squirrel-cage asynchronous motors was established. The model was imported into Simplorer to establish the joint simulation model. At the output end of the motor, the moment of inertia was set, and the state machine feature module...
The paper presents the optimization modeling and stress-strain analysis of several constructions. The strength and fatigue calculations were made by means of the finite element analysis (FEA) using engineering software ANSYS. Finite-element modeling in ANSYS allows us to find a structural solution that is simpler to manufacture and provides structural durability for a long time without using high...
Salient pole wound field synchronous machines (WFSMs) are widely used for various electric power generation, such as hydro and wind generators [1], because there is free of permanent magnet and it can be directly controlled by the DC winding.
The complex behavior of Steel Plate Shear Walls (SPSW) is investigated herein through nonlinear FE simulations. A 3D detailed FE model is developed and validated utilizing experimental results available in the literature. The influence of key parameters on the structural behavior is investigated. The considered parameters are: the infill plate thickness, the beam size, the column size, the infill...
During electrical wafer testing and wire bonding onto pad metallization, oxide layers in Backend-of-Line (BEOL) pad stacks are exposed to the risk of mechanical damage. Subsequent metal migration into oxide cracks leads to electrical device failure. We undertook simulation-based risk assessment using analytical and Finite Element Modelling (FEM) with regard to critical imprint depths in top metallization...
In combination with the mathematical model and finite element analysis, we carry the research on tower crane structural damage detection method in the load lifting process. The paper takes the laboratory mini tower crane as the study object. First we establish the FEM model of the tower crane under the normal and the damage condition. Then get the dynamic displacement of the normal and the damage...
In this paper we present the parameterized model of MEMS condenser microphone built in Comsol Multiphysics environment. It is based on coupled electromechanic FEM simulation with help of analytical modelling. The model uses set of parameters that describes the structure dimensions and applied loads. The user attention is needed only for putting those parameters and choosing the desired types of simulation...
In this paper, we introduce a systematic process of design, simulation and experimental validation of a manipulator based on the honeycomb pneumatic network (HPN) structure. The HPN structure shows potential in achieving balance between flexibility and load bearing capacity, which overcomes the shortcoming of pneumatic networks in strength. To reach the best performance of both features above, we...
The aim of this work is to carry out a study about wheel-rail and wheel-roller interaction. The final objectives are the determination of the hertzian contact ellipse, the maximum contact pressure and the pressure distribution in the contact zone, as well as the von Mises stress in the wheel for their application in the design of bogie test rigs. In order to accomplish this task, two models have been...
Gas insulated switchgear (GIS) is widely used for its good economic benefits. But mechanical faults caused by electromagnetic force occur occasionally. The conducting wire and the metal shell are exposed in the alternating electromagnetic field, which is caused by the load current and vortex. This leads to electromagnetic force because of electromagnetic induction. So it is necessary to analyze the...
Double horse-head pumping unit is a widely used pumping unit besides the conventional model. However, some components often fail during the service, such as the fracture of walking beam and back horse head. This paper aims to obtain the mechanical performance in key components by the establishment of rigid-flexible coupling multibody dynamics model. Firstly, the geometric model of double horse-head...
Using ANSYS finite element package, an electromagnetic simulation model is developed for switched reluctance generator (SRG) in which dynamic characteristics are predicted precisely with finite element method (FEM). Carrying out 2D finite element (FE) transient analysis, instantaneous phase current and stator pole flux waveform are predicted when magnetic saturation is considered in the analysis....
This paper investigates a double-stator permanent magnet synchronous generator. A new structure of the permanent magnet double-stator was designed for wind turbine. A precise model of the generator was built by FEMM software with finite element method to accurately calculate the equivalent the d and q synchronous reactance, rated current and voltage and other parameters. Compared with the calculations...
Craniofacial defects (CFA) are a diverse group of deformities in the skull and facial bones. The cause is multifactorial though genes, food and environmental factors are the major causes. Cleft lip and palate is the most common congenital craniofacial defect. The objective of this work is to develop a three dimensional (3D) finite element (FE) model of human skull with complete unilateral cleft lip,...
In order to study the influence of dynamic load for CNG cylinder frame in a new energy coach, the finite element model of CNG cylinders and frame was developed with 3D reverse engineering and the finite element method. The strength analysis was performed by loading 6.6g acceleration in the forward direction and 5g acceleration in horizontal direction according to ECE R110 regulations requirements...
In this paper an analysis and modeling methodology of piezoelectric transformers is presented. Three-dimensional simulation by Finite Element Method is utilized to obtain the Mason lumped parameter model. The PT has been prototyped and the experimental measurements are compared with the simulations. The results show that the simulation in three-dimensional environment by Finite Element Method reveals...
An experimental and numerical study of electrical contact for low currents in sphere-plane set-up is presented. A three-level multi-scale model is proposed. We use the finite element analysis for macroscopic mechanical and electric simulations. It takes into account the setup geometry, elasto-plastic mechanical behavior of contacting components in the finite-strain-plasticity framework and electrostatic...
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.