You want to build a support system for a swing structure as shown in the figure. The sections must be disassembled because they must be located in a construction. It must last at least 20 years. The critical section is the load-bearing beam. Assuming the entire system is oversized minus the one indicated. Determine the spar of a round section that will be supported at the ends, the spacing L between the main supports will be 4 meters and the loads will be punctually 1 m from the ends. It is expected that the material will not plastically deform or break when subjected to two applied loads of 500Kgf (9.8m / s2) and that the allowable deflection is 0.8 cm. Do not consider safety factor. You want to minimize the weight and cost of the structure. The crossbar should weigh between 50 and 300 kg (if possible). 

Use the CES EDUPACK at level 3 to:

  Solve the material mechanics of the beam and determine the relationship of stress and modulus of elasticity as a function of Force, length, side of the cross section and deflection where it applies.  Select the lightest (ideal) material to make the beam  Select the materials that comply with the restrictions and that allow the 50 and 300 kg beam to be made and that comply with the indicated restrictions. If possible  Establish other criteria to limit the selection of materials to ensure component durability  Materials must be recyclable and withstand outdoor conditions.  Make a graph of Price vs. diameter and another graph of Price v.s. Mass to display the selected materials.  Indicate the fabrication and joining process (welding, rivets, etc.) that you would use to build the stringer.  Discussion of the results obtained, pros and cons of the proposed materials  Last conclusions

viga circular P a) Cargas Se ha determinado que el larguero funciona tal y como se indica en el diagrama viga circular P a) Cargas Se ha determinado que el larguero funciona tal y como se indica en el diagrama