نتایج جستجو برای: speed trains
تعداد نتایج: 215799 فیلتر نتایج به سال:
This paper aims to develop a multi-objective model for scheduling cargo trains faced by the costs of tardiness and earliness, time limitations, queue priority and limited station lines. Based upon the Islamic Republic of Iran Railway Corporation (IRIRC) regulations, passenger trains enjoy priority over other trains for departure. Therefore, the timetable of cargo trains must be determined based...
High-speed train is a large-scale electromechanical coupling equipment with complex structure, where the interlaced between various system components, and excitation sources are diverse. Therefore, reliability has become top priority for safe operation of high-speed trains. As operating mileage trains increases, key systems experience degrees performance degradation damage failures. Moreover, i...
A three-dimensional finite element model was developed to investigate dynamic response of track-embankment-ground system subjected to moving loads caused by high speed trains. The track-embankment-ground systems such as the sleepers, the ballast, the embankment, and the ground are represented by 8-noded solid elements. The infinite elements are used to represent the infinite boundary condition ...
The interest in dynamic behavior of railway bridges has increased in recent years with the introduction of high speed trains. Higher speeds of the trains have resulted in larger and more complicated loads than earlier, producing significant dynamic effects. The dynamic aspects are of special interest and have often shown to be the governing factor in the structural design. Dynamic analysis of r...
Some parts of the European high speed line network are near saturation. ETCS-L2, the so called Level 2 of the European train control system, standard for providing signalling and automatic train protection (ATP) on new high speed lines (HSL), offers a pretty good level of capacity. However, even with the mobile block system provided by ETCS-Level 3, it seems quite impossible for the practical c...
Due to the large size and complicated features, brake discs of high-speed trains are difficult forge, so a reasonable design process die parameter prerequisites for successful forming. The flow stress 23CrNiMoV, forged-steel disc material trains, was investigated by uniaxial compression experiment on Gleeble 1500 test machine. Based obtained flow-stress data, series numerical simulation analyse...
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