- #1
faiz513
- 5
- 0
I need to know how much stress a manual hydraulic car jack has while holding a 4000 lb load?
AI Thread Summary
The discussion centers on the stress experienced by a manual hydraulic car jack when holding a 4000 lb load. Participants emphasize the need for detailed specifications about the jack's components to accurately assess stress levels. The hydraulic piston, approximately 1 inch in diameter, is mentioned, but it is noted that it is unlikely to be the failure point under stress. Instead, the conversation suggests that other components may fail first, highlighting the importance of understanding the entire system. More information is necessary for a precise evaluation of stress in the hydraulic car jack.
- #2
stewartcs
Science Advisor
- 2,176
- 3
faiz513 said:
I suggest hiring a professional engineer.
Otherwise, you'll need a lot more detail on the specifics of the car jack.
CS
- #3
nvn
Science Advisor
Homework Helper
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faiz513: For which component in the hydraulic car jack do you need to know the stress? And what is the diameter and cross-sectional area of that component?
- #4
faiz513
- 5
- 0
i need to know the stress the hydraulic piston, which has a diameter of about 1 inch is a able to withstand?
- #5
berkeman
Admin
- 69,112
- 24,042
faiz513 said:
The piston is not going to be the part that fails when the jack is overstressed. Which part do you think will fail first, and how will it fail... ?
- #6
xxChrisxx
- 2,056
- 85
Bit of an elementary question really. Stress is force/unit area.
Unless you want a more specific and/or useful answer more info is needed.
Unless you want a more specific and/or useful answer more info is needed.
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
which motor is reasonable for slider crank motion , where the motion of slider should be control with motor speed.
Thank you
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