Exerting torque on an extension spring to overcome friction in a helical tube

AI Thread Summary
The discussion focuses on modeling the potential energy buildup in an extension spring when twisted while constrained in a helical tube. Participants explore the calculation of strain energy resulting from bending the spring into different radii due to torsion. The conversation emphasizes that if the spring does not undergo plastic deformation, the strain energy corresponds to the increase in potential energy. The need for a specific equation to accurately represent this energy change is highlighted. Understanding these dynamics is crucial for applications involving torque and friction in constrained spring systems.
bill nye scienceguy!
Messages
121
Reaction score
0
Does anyone know of an equation that models the build up of potential energy in an extension spring induced by twisting it when its motion is otherwise constrained in the transverse direction?
 
Last edited:
Engineering news on Phys.org
You could calculate the strain energy due to bending the spring into a larger (or smaller) radius from the torsion. If it doesn't plastically deform the spring, the strain energy would be that increase in potential energy.
 
Last edited:

Thread 'Race car suspension Class'

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...
View full post »
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

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...
View full post »

Thread 'Cantilever help'

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
View full post »

Similar threads

Find the force acting on the roller in the direction of the spring
Replies
14
Views
1K
Helical conical compression spring design
Replies
2
Views
5K
Measure Energy from Spring Motion (VIV)
Replies
1
Views
2K
Problem of spring block system: force vs conservation of energy
Replies
20
Views
3K
How can I determine the instant the block overcomes static friction?
2
Replies
61
Views
3K
What makes a connecting rod turn a crank one way?
Replies
9
Views
3K
Solving for λ, a, and Vmax: An Analysis of Energy Balance and SHM
Replies
21
Views
3K
Calculate the characteristics of this compression spring
Replies
3
Views
1K
Differential Equations and Damper Curves
Replies
3
Views
2K
Solving a Spring-Mass-Box System:Energy Conservation
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top