Structural Design

Why are ship structures so labor intensive to design?  Just slap together some beams.  Complication:  for every single beam and plate, engineers need to anticipate multiple methods of failure.  DMS engineers need to protect against every failure mode, for each stiffener and plate on the ship.  The trick for efficient structural analysis focuses on recognizing which methods of failure are likely in each scenario.

DMS employs a combination of automated lofting process, class society calculations, and automated first principle calculations to not only optimize the structure, but also optimize our labor.  This allows us to deliver more detail with less effort.  A lighter structure with more definition, making it easier to build.  Services include:

  1. Structural lofting
  2. Class society calculations
  3. Finite element analysis (FEA)

In the course of our structural design, we can check any range of failure modes.  Examples include:

  1. Local bending
  2. Global bending
  3. Buckling
  4. Shear
  5. Fatigue
  6. Corrosion
  7. Combined stresses

Don’t let this happen to you!

MOL Comfort showing global structural failure.  

Image Credit:  The Commonwealth of the Bahamas, “Report of the Investigation Into the Sinking of the “MOL Comfort” in the Indian Ocean,” Bahamas Maritime Authority, London, UK, September, 2015.

Want to Learn More?

We are happy to discuss your next project.  We can customize each project to meet your exact goals.

We also offer free general project plans to help prepare for your next round of quotes.

At DMS, we are dedicated to your success.

Relevant Ship Science Articles

Video: Selecting the Right Hullform

Monohull, catamaran, trimaran . . . so many choices. Which hullform to pick? Can we draw upon any science to guide our choices, or we beg Lady Luck to guide us? This article provides a rational and design map for selecting hullforms applicable to any type of mission. This organized approach allows us to see past the limitations of historic examples and consider new alternatives.

read more

Six Tip to Improve Your FEA

An experienced engineer doesn’t have some magic button to deliver great FEA. Masters of FEA trade-craft hoard many little tricks and nuggets of wisdom to deliver better FEA. These tricks yield better ways to detect human errors and ensure model reliability. Or methods to deliver faster results. Today we share six nuggets of wisdom for better FEA.

read more

Trust Your Singularity

Why FEA Singularities Are Acceptable https://youtu.be/-OHXl-mvR5U 1.0 Introduction You stare in dread at the FEA results, which show unbelievable stresses in small spots at the corners.  Don’t panic; they are only stress singularities.  Small regions where the FEA...

read more

Mesh Size Does Matter

FEA Errors from Mesh Size https://youtu.be/EDs7uqDRHDE   1.0 Introduction When was the last time you actually tested your finite element analysis (FEA) results?  Are you sure that every FEA analysis ever ordered is accurate?  Will you trust your life to it?  In truth,...

read more