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Accurate thermo-mechanical coupling analysis for operational conductors is important to guarantee satisfaction of the safety requirements, e.g., strength safety or safe distance of sag. The paper presents a new method for this analysis, i.e., calculating the temperature fields using finite element analysis, based on which to compute the stress fields using the force equilibrium and compatibility conditions...
Lamb wave has been widely used for large structure inspection. Generally, piezoelectric transducers or electromagnetic acoustic transducers (EMATs) can be used to generate Lamb wave. The driving mechanism of EMATs includes Lorentz force, magnetization force and magnetostriction. A finite element model for magnetostrictive Lamb wave EMATs has been presented including the three mechanisms. The simulation...
This paper proposes a simple magnetic equivalent circuit using permeance method in order to design rough configurations of the lowest loss motor. First, the iron loss is calculated by the proposed method and compared with the analysis result by finite element method (FEM). As a result, the error of the calculation results between the proposed method and the FEM is 2.9%. Next, the motor losses are...
A load-bearing transport element with permanent magnet for transport of rails is proposed. The element does not need any external source of energy and may be controlled by short current pulses delivered from an appropriate source fixed to the device. The paper presents the device and its mathematical model that is solved numerically. The results of an illustrative example are discussed.
Based on the laboratory experiments, the drawing galling behavior in macro-scale is investigated in the square cup drawing of a high tensile strength steel SPFC590 in semi-dry condition. When using the non-coated dies (cold alloy tool steel (SKD11, SLD) and austempered ductile irons (ADI)) in semi-dry, the macro-scale galling can clearly observed on die and drawn cup surface after a few drawing cycles...
Based on finite element method and ANSYS software, vibration feeder is fatigue break influenced by exciting force alternate load. This paper introduces the rational finite element model of vibration feeder. It discusses harmonic response analysis and discovers weak links which is angle steel junction of side plate, feed inlet and junction panel between no feed side plate and bottom plate then makes...
In order to study the effect of friction state on contact reaction force of rollers and bearing's inner ring and outer ring, contact analysis model was established by the local coordinate system and finite element method for rolling bearings of universal steel mill. Studied the changing rule of force parameters of rolling bearings during steel rolling, the results show that contact reaction is a steady...
Combining classic rolling and casting theory and finite element method (FEM), a rolling force controlling model has been deduced in twin-roll strip casting, which considers the influence of casting velocity and melt level. After accuracy certification, the model has high precision under given conditions, and it can be used to set initial parameters before strip casting and can be used to adjust correlative...
A finite element method involving Johnson-Cook material model and fracture criterion was used to simulate the serrated chip morphology during high speed machining AISI 4340 hardened steel in different rake angles using commercial FE software ABAQUS. The effects of rake angle and chip morphology on cutting force were discussed. The investigation indicates that the simulation results are consistent...
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