×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

spiral torsion springs

spiral torsion springs

(OP)
Anyone know of any suitable instrumentation or have any ideas on how to measure the amount of energy that can be stored on the attached spring?

The spring can be unsrewed and mounted on something if needs be.

Any equations to calculate the amount of energy that can be stored would also be helpful.

Thanks.

RE: spiral torsion springs

E = 0.5 * K *(Theta)^2

E - Energy (Joule)
Theta - Angle of deflection (Radians)

You can use the formula with other unit system as long as it is consistent.

RE: spiral torsion springs

(OP)
Thanks both.

Is there a formula for how many times it can be wound (number of revolutions) it can take?

RE: spiral torsion springs

If I understand what you are asking, that's going to be based on the center coil diameter, spring thickness, & spring length.  You'll just sum up the circumferences of the concentric coils.  Cn = pi (D + n*2t); where Cn is the circumference of the nth coil, D is the center coil diameter & t is the thickness.  The sum of Cn from 1 to n is the length of the spring.

<tg>

RE: spiral torsion springs

Mas87

You need to calculate the stresses in the spring and then use fatique analysis (S-N, Goodman, etc.) to calculate the life cycle. There is no one simple formula for this process.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!