×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

# Contact US

Log In

#### Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
To Your Posts
• Keyword Search
• One-Click Access To Your
Favorite Forums
• Automated Signatures
On Your Posts
• 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.

Students Click Here

# Boundary conditions for a floating concrete platform

 Forum Search FAQs Links MVPs

## Boundary conditions for a floating concrete platform

(OP)
Hi everyone,

This is my first thread ever. It feels nice to be a part of tnis forum.

My question is what would the boundary conditions be for FE analysis of a concrete platform for wave or stillwater loading?

I am currently working in a GBS project as a structural engineer. I have been doing the concrete design using the FE output. I havent been involved in the analysis task so i have some trouble understanding how a floating object resting on a fluid can be analysed.

Ship hull bending moment calculation is pretty straight forward. Basically, solving a distributed load on a simple beam. So boundary conditions would be simply restraints at both ends restraining 3 degrees of freedom to have isostatic system.

But how should you restraint a 2d planar object on fluid? Restraining 6 degrees of freedom in total?

Any book reference about structural analysis of floating objects would be appreciated.

Thanks

### RE: Boundary conditions for a floating concrete platform

(OP)
Not really. But thanks anyway.

### RE: Boundary conditions for a floating concrete platform

Gravitional weight down, resisting buoyancy pressure distributions are up. After that add F= m A. Where accelerations are derived from vessel displacement over time as forced by your wave equation, from which forces and buoyancy distributions can be obtained for structural analysis.

#### 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.

### Reply To This Thread

#### Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login

#### 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
Design for Additive Manufacturing (DfAM)
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!

Already a member? Close this window and log in.