Integrating Studies Design And Make

1
Integrating Studies Design And Make

• Group F.
• Phil Baxter
• Matt Freebody
• Liam Davies
• Eraclis Demetriou
• David Kwok Leung Chan

2
Frame 1
PIp 686.7N/2x(0.964kg)2 369.5Nkg-2 PIa
313N/ 2x(0.964kg)2 168.4Nkg-2
Yield Stress of EN8 Steel 280 x 106 Pa
For 100N load. AD -200N AB 173N BD 200N DE
-346.4N BC 173.4 N BE -200N
Ratio of force on BD relative to load is 4.
So,
Convert to kg
Factor of Safety 2
3
Frame 2 - Design
4
Frame 2 - Calculations
PIp 2719/2x(0.878) 2 1764Nkg-2 PIa 1589/
2x(0.878)2 gt 1030.6Nkg-2
Max quoted load on wire 510kg with BS FOS 5. So
if in perfect tension with no weak points the
wire can hold
Using our method of joints taking into account
the non-perfect tension we found a ratio of 4
This value shows the maximum load the wire can
take in our frame. To find our failure load we
added our factor of safety.