The next generation material for lightweight railway car body structures: Magnesium alloys

Lee, Woo Geun; Kim, Jung-Seok; Sun, Seung-Ju; Lim, Jae-Yong

doi:10.1177/0954409716646140

Cited by 42 publications

(27 citation statements)

References 32 publications

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“…Worldwide, approximately 12% of steel products (about 121 Mt per year) and about 27% of aluminium products (12 Mt per year) are used in transportation, incentivizing efforts to reduce weight in automotive [92][93][94][95] , aerospace [96][97][98] and railway 99 components. In the case of vehicle lightweighting, the potential is considerable given that 20% of our global energy and process CO 2 emissions originate from transportation and about 20% of that could be reduced through lightweighting 100 .…”

Section: Energy Efficiency By Lightweighting and Harsh Operating Condmentioning

confidence: 99%

Strategies for improving the sustainability of structural metals

Raabe

Taşan

Olivetti

2019

Nature

416

143

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Metagoods 16% Vehicles 13% Industrial equipment 16% Construction 55% Re ne Smelter Mine Fabrication Manufacture Use New Scrap Old Scrap Land ll Carbon scrap/nickel to other scrap markets Stock End-of-life products c Transportation 19% Electronics 5% Chemicals 1% Industrial machinery 30% Household appliances and metal goods 28% Building and infrastructure17% Mine Rutile Mill product Ti ingot Manufacturing scrap Mill scrap End-of-life products Use Ferrotitanium Ti sponge TiO 2 feed TiCl 4

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Section: Energy Efficiency By Lightweighting and Harsh Operating Condmentioning

confidence: 99%

Strategies for improving the sustainability of structural metals

Raabe

Taşan

Olivetti

2019

Nature

416

143

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“…The prospects for the use of new generation materials during the production of railroad cars were previously outlined in [1]. The advantages of using magnesium alloys in the carrying systems of wagons were indicated.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…An analysis of references [1][2][3][4][5][6][7][8] allows us to conclude that up to now the issue of determining the patterns in the dynamic load and durability of the load-bearing structures of covered wagons while firing from them has not been paid proper attention to. This may cause damage to the typical load-bearing structures of wagons when they are used for military strategic purposes.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the dynamic loading and strength of the bearing structure of a covered wagon when firing from it

Fomin

Lovska

Kudelya

et al. 2020

EEJET

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The bearing structure of a covered rail wagon has been improved to enable firing from it at motion. The covered wagon of model 11-217 was chosen as a prototype. To enable firing in the vertical plane, it has been proposed to use a sliding roof, which consists of shutters that move by means of a pneumatic or hydraulic drive. To accommodate military equipment inside the covered wagon, its frame is equipped with supporting sectors. Mathematical modeling was performed in order to determine the dynamic load on a covered rail wagon when firing from it. The mathematical model was solved in the Mathcad software package. We have established the dependence of the accelerations of the bearing structure of a covered rail wagon on the recoil force induced by the combat equipment that it hosts. It has been found that in order to maintain the dynamics indicators within acceptable limits, combat equipment should have a maximum recoil at a shot of about 3.2 kN. The maximum accelerations that act on the bearing structure of a covered wagon in a vertical plane are about 6 m/s 2. In the zones of interaction between the body and bogies, the maximum accelerations are about 9.5 m/s 2 and the accelerations of bogies are 10 m/s 2. To reduce the dynamic load on the bearing structure of a covered rail wagon, it has been proposed to use a viscous connection between the supporting sectors and frame. We have determined the dependence of accelerations on the coefficient of viscous resistance between the supporting sectors and the bearing structure of a wagon. It has been established that taking into consideration the use of a viscous connection between the supporting sectors and frame makes it possible to reduce the dynamic load on a wagon at least by 15 %. The basic indicators of strength for the bearing structure of a covered rail wagon when firing from it have been determined. We have derived the dependence of the maximum equivalent stresses in the bearing structure of a covered wagon on the recoil force of combat equipment. The maximum equivalent stresses at a recoil force of 3.2 kN arise in the console part of the girder of a covered wagon and are about 300 MPa. The maximum displacements were registered in the area where the front stops of the auto-coupling are arranged; they are equal to 2.9 mm. The maximum deformations amounted to 6.98•10-3. Modal analysis of the bearing structures of a covered rail wagon has been carried out. It has been determined that the values of the oscillation natural frequencies are within the permissible limits. Our study will contribute to the construction of innovative rolling stock for the transportation of military equipment and for firing at motion

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“…The advantages of using magnesium alloys in the manufacture of load-bearing structures of wagons are highlighted in [5]. Prospects for the introduction of such materials in carriage building have been determined.…”

Section: Introductionmentioning

confidence: 99%

Study of the Dynamic Loading of the Load-Bearing Structure of a Flat Wagon During Transportation by Sea

Fomin¹,

Lovska²,

Safronov³

et al. 2020

Eureka: PE

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To increase the efficiency of combined transportation, the supporting structure of flat wagon has been created. A feature of the wagon is that the sections have a low center of gravity. This solution allows for the transportation of oversized cargo on a flat wagon within the established dimensions. The design of this flat wagon can be used for the carriage of goods not only by main lines, but also in rail and water traffic when transported by rail ferries. To ensure the safety of transportation of a flat wagon with containers on a railway ferry, their dynamic loading was determined. It is taken into account that a large-capacity container of 1AA standard size is placed on each section. The solution of the mathematical model was carried out in the MathCad software package. The resulting accelerations, as components of the dynamic load, were taken into account when determining the stability of a container on a flat wagon during transportation by a rail ferry. It was found that the stability of the container is ensured at tilt angles up to 25°. A computer simulation of the dynamic loading of the supporting structure of an articulated flat wagon with containers during transportation by a railway ferry has been carried out. The calculation is implemented in the CosmosWorks software package using the finite element method. The fields of distribution of accelerations relative to the supporting structure of the flat wagon and containers are determined. The maximum percentage of discrepancy between the results of mathematical and computer simulation does not exceed 11 %. The research carried out will contribute to the creation of innovative designs of flat wagons, as well as to increase the efficiency of the operation of combined transport in international traffic

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The next generation material for lightweight railway car body structures: Magnesium alloys

Cited by 42 publications

References 32 publications

Strategies for improving the sustainability of structural metals

Strategies for improving the sustainability of structural metals

Determining the dynamic loading and strength of the bearing structure of a covered wagon when firing from it

Study of the Dynamic Loading of the Load-Bearing Structure of a Flat Wagon During Transportation by Sea

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