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Unformatted text preview: to steel fabrication, and simpliﬁes and
reduces the amount of welding.9 The overall result
is a stiff structure that is able to handle complex loads
and aerodynamic forces that result from going through
tunnels, and which is about two-thirds of the weight of a
comparable structure fabricated from steel.
This weight reduction is especially signiﬁcant for
commuter trains with frequent stops as it enables energy
savings in service and reasonable acceleration between
stops (Figure 3). The other advantages of aluminum
in durability and corrosion resistance also provide low
maintenance costs and long system life. Figure 3. DC Metro train. (Photo courtesy of http://en.wikipedia.org/
wiki/Washington%2C_D.C.) Figure 2b. High capacity railcar with sliding aluminum sidewall. (Photo
© Alstom Transport) Lastly, another advantage of aluminum freight cars is
that they retain a high salvage value when recycled at
the end of their life cycle. In a recent example, several
hundred 100-ton hopper cars initially built aroun...
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This note was uploaded on 01/27/2014 for the course CM 312 taught by Professor Mariowriedt during the Spring '10 term at Clarkson University .
- Spring '10