The presentation slides

Here are the slides from our presentation.

eulers theroem

finally worked out the stress that the bars can take using aluminium alloy with young's modulus of 70GPa and found that our bars would withstand the forces applied, result! now just have to find a supplier.

we worked out the loads our bars would undergo

the reasoning behind getting rid of the bottom of the legs was because when we had worked out the force the bars would undergo we noticed that the legs would simply buckle therefore had to re-design our frame. which would in turn give us better efficiency in costing.

we decided to use a bar of length 3.1 with a stopper at each end, 0.5m from the end to stop the load knocking the frame. this gave us movement of 2.1m. the idea was to pick up the load, move it and then repeat this process.

First Load Calculations

Group meeting

On Monday 26th April the group will have a presentation meeting in the library at 1230hrs. All individuals are to arrive with the material they would like to include in the group presentation (on Wednesday 28th Apr). This information should have already been included as a blog entry prior to the meeting.
A further practice session is also planned for Tuesday 27th Apr.

Progression

The created structures now need to be tested. Therefore the next logical step is to create free body diagrams, showing a wide range of different forces acting on the beam, in order to establish the strength of the structure; and therefore determine what material is needed to create it.

Sliding Device

Where we've decided to use rollers that would slide along the "I" Beam section easily, for easier handle and movement of the object.

Initial Design

Pictures from 17th March meeting

Here are some sketches of deisigns we have decided to take further, from our individual design ideas:

A gib style crane, with approximate dimensions on it.

A more detailed sketch of the crane, with indications of static and moving parts, and dimensions

Afy, Juan, Hector, James