Week 2 Experimentation TS Term 2.

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Presentation transcript:

Week 2 Experimentation TS Term 2

What are we testing? Diagrams? Relationship of column to the ground types: Hinged Pinned Rotating Fixed and pinned Different length and width Different sections Diagrams?

1. Columns and their relationship to the ground Relationship type Amount of buckling (cm) Half a bottle Full bottle 1. hinged on bottom, free on top .5cm 1cm 2. hinged on bottom and hinged on top .2cm .8cm 3. rotating on top, hinged on bottom .7cm 1.2cm 4. hinged on bottom, pinned on top 1.5cm 3cm 5. pinned to fixed surface on top, hinged on bottom 6. pinned to fixed surfaces on top and bottom 3.5cm 4cm

Hinged on bottom, free on top Diagram of connection Half bottle: .5cm full bottle: 1cm

Hinged on bottom and hinged on top Half bottle: .2cm full bottle: .8cm Diagram

Rotating on top, hinged on bottom Half bottle: .7cm full bottle: 1.2cm Diagram

Hinged on bottom, pinned on top Half bottle: 1.5cm Full bottle: 3cm Diagram

Pinned to fixed surface on top, hinged on bottom Half bottle: .5cm full bottle: .8cm Diagram

Pinned to fixed surfaces on top and bottom Diagram Half bottle: 3.5cm full bottle: 4cm

2. Different length and width 1) 1*1*30cm Original size, hinged bottom with free on top. The largest deflection. 2) 1*1*15cm Half in height. Deflected only slightly (1mm) with the same load. 3) 2*2*30cm Double dimension with original height. Barely deflected. 4) 1*2*30cm One dimension is doubled. Deflects towards the plane with the longer dimension.

3. Different sections with same area size (1cm2) 1) Original square section. Hinged bottom with free on top. 2) Square frame section. Stiffer than square section. 3) I section. It was also stiff and did not bend like normal square section.