- #1
BenC1994
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Cantilever Framework Practice Exam Confusion
- Thread starter BenC1994
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- Cantilever Confusion Exam Framework
AI Thread Summary
The discussion centers on confusion regarding calculating the lengths of beams in a cantilever framework practice exam. A participant suggests using a Free Body Diagram (FBD) to analyze the forces instead of needing initial lengths. They explain that the reaction forces can be represented with blue and red lines in the diagram. The key equations to apply are the sum of vertical and horizontal forces equaling zero. This approach simplifies the problem and clarifies the necessary calculations.
- #2
jack action
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You don't need them. Just do a FBD and you will see.
I started it for you. The blue lines are the reaction forces in the beams and the red lines are the components of the reaction force of the slanted beam. Sum of Fy = 0, sum of Fx = 0 ...
I started it for you. The blue lines are the reaction forces in the beams and the red lines are the components of the reaction force of the slanted beam. Sum of Fy = 0, sum of Fx = 0 ...
- #3
BenC1994
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Ah thanks for that, much appreciated! Knew I was missing something.jack action said:
Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have.
Simply put, the car pushes going in and is loose coming out.
You do not have enuff downforce on the right...
Scenario 1 (figure 1)
A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material.
The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm).
At this level of stretch, the load cell reads 45N tensile force.
Key numbers...
I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
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