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General profiles chosen from worn wheel profiles and railheads (briefly, worn wheel and rail profile) measured by wheel-rail profile admeasuring apparatus were used to build the finite element models, and the new/worn wheel-rail contact problems were analyzed respectively on the tangent and curved track. Variable regulations of contact area's size, shape and position were generalized. The results...
Irregularity of the fixed frog affects the passage velocity and the comfort of urban railway vehicles. To reveal this irregularity, based on the Finite Element Method (FEM) computational models were set up. The models included the contact between the worn tread wheel of Dalian tram and the 50kg/m rail as well as the different sections of No. 9 fixed frog. The results were used to find the laws of...
This paper is to introduce the design and optimization the PoE Hub with redundancy based on the principle of EMC; through the simulation and analysis by FEM to the effectiveness of the hub of the electromagnetic shielding to enhance anti-interference performance of the hub according to the optimization to the problems discussed in the simulation. Having the aid of EMC simulation software, the analysis...
The heat damage of wheel tread and rail surface is one of the problems that need to be solved urgently. In this paper, finite element method was used to analyze the problem of three-dimensional wheel-rail thermal contact coupling. The contact patch's size of the cone and the wear type locomotive wheel tread was researched. The thermal-contact coupling was analyzed for wheel-rail temperature and stress...
To study the effects of temperature dependent nonlinear material properties on wheel-rail thermo-elastic contact, and compare behavior of different wheel profiles, four types of wheel profiles, XP55, S1002, LM, and LMA, wheel-rail slide models were built using finite element method (FEM) software MSC.Marc. Slide temperature and thermal stress were analyzed in thermal-contact coupled and pure mechanical...
The purpose of this research was to study the contact between adjacent teeth and the biomechanical reactions of the teeth root, mandible, and periodontal membrane under orthodontic forces. First, the mandible and mandibular dentition were scanned by spiral computed tomography, and then reconstructed. The contact problem of the three dimensional multi-body between arc wire orthodontic device and mandible...
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...
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