Study on Impacts of Energy Absorbing Devices on Train Collision Energy Absorption
In order to study the effects of different configurations of force-displacement relationship of the additional energy absorbing device on the absorption of kinetic energy during a collision, a multi-rigid body dynamics model of two identical eight-car trains was established, calculated and analyzed....
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2019-09-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2019.05.007 |
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| Summary: | In order to study the effects of different configurations of force-displacement relationship of the additional energy absorbing device on the absorption of kinetic energy during a collision, a multi-rigid body dynamics model of two identical eight-car trains was established, calculated and analyzed. The results shows that under the premise of ensuring the same designed capacity, the design of force-displacement curve as multi-step with constant gradient or one which has a certain positive slope can make the device absorb more impact kinetic energy than a steady force-displacement curve whose force is a constant during a collision. Besides, the larger the slope of the force-displacement curve, the more energy is absorbed. In addition, the force-displacement relationship of the three-section metal turning tube under axial compression was studied and is found that with certain design parameters, the force-displacement relationship curve is almost in form of two equal gradients. At the same time, the tube's stroke effciency is up to 76.5%, which is more than 95% of the theoretical stroke efficiency (80%), proving that the three-section metal turning tube has a good deformability and energy absorption capacity. |
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| ISSN: | 1000-128X |