Vibration analysis of bridges induced by train loads is a crucial aspect railway design, particularly considering the complexity vehicle components such as bogie-suspension systems. Consequently, engineers have endeavored to improve computational efficiency and applicability models using finite-element method. This paper introduces toolbox implemented in ABAQUS through user-defined element (UEL...

This 68-year-old patient with Stage 4 chronic kidney disease was reviewed in our low clearance clinic 2 months after formation of a left arteriovenous fistula. The prominent ‘half-and-half’ appearance of his nails was noted. Nail disorders are common in chronic renal failure, affecting up to 70% of haemodialysis patients [1]. Half-and-half or Lindsay nails [2], where the proximal half of the na...

In this paper existing active and passive radial guiding systems of railway vehicle wheelsets are presented. The new system described in is based on non-direct measuring lateral forces bogie elements. As a part project development there where numerical calculations experiments test stand carried out. main issue, investigated stress signals from extensometers mounted elements wheelsets. conclusi...

Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model usually mounted above a static ground plane, but moving necessary for correct representation relative motion between ground. This study focuses on effect applied simulation aerodynamics train. tests using stationary were carried out 1:20 scale train’s first car. Nume...

We present a method that uses high-resolution topography data of rough terrain, and ground vehicle simulation, to predict traversability. Traversability is expressed as three independent measures: the ability traverse terrain at target speed, energy consumption, acceleration. The measures are continuous reflect different objectives for planning go beyond binary classification. A deep neural net...

As one of the important core components train running parts, wheel rail related force will directly affect vehicle performance and passenger comfort. Take a high-speed as research object, track coupling dynamic model is established. The influence polygon on vibration characteristics bogie system analyzed through simulation. results show that when wear occurs, effective value lateral acceleratio...

Software often goes through a variety of extensions during its lifetime: adding new fields or new variants to a data structure, retroactively creating new type abstractions, and adding new operations on a data structure. As characterized by the extensibility problem, it should be possible to apply any combination of these types of extensions in any order. Mainstream object-oriented languages, h...

A 14-month-old child was diagnosed with a Veau Class II cleft palate. Von Langenbeck palatoplasty was performed for the right palate, and V-Y pushback palatoplasty was performed for the left palate. The child did not have a special problem during the surgery, and the authors were able to elongate the cleft by 10 mm. Contrary to preoperative concerns regarding the hybrid use of palatoplasties, t...