8/19/2019 #SolidMechy Conclusion

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LITERATURE REVIEW

Reference

In completing the project, we did a lot of calculations regarding the resultant force

and resultant couple of solid mechanics. Therefore, we have made a lot of reference

especially to ‘R.C Hibbelers !ngineering "echanics # "echanics of "aterials

$ne of the areas where solid mechanics is potrayed in the project is beam loading.

The loads on a beam can be point loads, distributed loads, or varying loads. There can also be

 point moments on the beam. In our design, we placed the loads on top of the bridge. Hence,

our modelled%bridge is subjected to distribution loads. The force is distributed evely along the

whole lenght of the bridge. $ur objective is to determine the ma&imum amount of loads that

our design can hold before failure occur. 't the same time, we are to design the lightest

 bridge.

'n engineering truss is essentially a type of frame designed to transmit loads in

structures to the supports. In this way the static loads (mass), and live loads (traffic, wind)

can be transmitted safely to the piers and abutments, which in turn transfer the loads to the

ground. Trusses were usually made of timber, iron, or steel. They are not as common as they

used to be because modern bridges tend to be steel bo& girder, post%stressed concrete, or 

cable%stayed structures. ' typical truss is made up of members that are joined together to

form triangular sections. "embers of a truss may be in tension, compression, bending or 

shear. There are a number of different ways in which members can be arranged to form a

truss, and over the years different arrangements have been assigned different names for ease

of identification. Truss types include the *attice truss, the "c+onald truss, the 'llan truss,

the ratt truss, the -hipple truss, the truss, and the -arren truss.

In our construction, we design a bridge that is made of -arren and truss and each

member are joined firmly by wood glue. +uring our testing, it can be seen that our modeled%

 bridge can hold to a ma&imum load of /0.12 3g while the weight of our bridge is 4.566 3g.

Thus, the performance rating calculated is 07. This shows that the bridge can withstand or 

carry 07 times amount of force of its overall weight.

8/19/2019 #SolidMechy Conclusion

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