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Research Rap: Going 3D with Design
June 11, 2008
A quick peek into some research on ... moving to 3D design software points
out the need to plan for more than just the purchase of the new CAD software. The research highlights some of the key challenges and success factors in making with switch from 2D to 3D design.
Why Switch, Isn't Everybody Already 3D?
If you have been reading articles and looking in from the outside, you might think that all products are being designed in three dimensional form, and that the only things being developed in flat representations are architectural designs. But for those that are "in the business" of design, it's clear there is still a lot of 2D around. But that is changing, and more people are focused on "solid modeling" or "virtual prototyping" instead of 2D design.
Why Go 3D?
Designing in 3D has some inherent advantages.Being able to easily visualize the product in it's true form is just one of them, although it is also an important one. We live in a 3D world, and engineers are taught early on to draft 3D forms onto paper. OK, maybe when you did it you drafted it on a computer, but for me it was paper. So when an engineer designs a product, they have envisioned it in 3D and then translated their mental image (or sketches) into 2D. That's hard, but as I said every engineer I know was trained to do that. I was never very good at it, which is why I am writing a blog instead of designing the next new product. But most practicing engineers are pretty good at making the mental translation. What what's the problem?
- First, 2D drawings leave room for interpretation. The way one engineer sees the object in 3D might be different than the other. And the manufacturer may see it a different way yet.
- Second, the rest of the world wasn't trained to see 3D in 2D. We all grew up in a 3D world, and that's the way we interact with things. So when we share ideas with non-engineers, a 3D model is a much better way to communicate.
- Third, we can interact with it. Turn it, twist it, maybe even cut it open to see what it looks like from the inside (cross-section). It's just more natural.
- Fourth, we can see how it takes up space. This is particularly important in assemblies, where different parts need to nest or where there is the potential for interference.
- Fifth (and I am not the expert here, I am sure others might have a "top ten" instead of five), is that 3D opens up opportunities for all sorts of analysis on the design, including finite element analysis or other forms of analysis that can be used to validate the design without physical prototypes.
In short, 3D is a better design medium, and also a better design communication medium.
So Why not 3D?
The Aberdeen report points out some specific challenges in transitioning to 3D. The top challenges in the Aberdeen study are:
Cultural resistance to change
Software cost
Training engineers on 3D
Lack resources to train personnel
Leveraging legacy 2D drawing data
When it came to whether companies chose to make the transition, the report uncovered a large number of companies that felt they didn't need 3D. A section in the report asked if 3D was overkill for those companies, but then concluded that it may be more of a perception than the reality. The report goes on to demonstrate significant value achieved through the effective use of 3D, including significant savings in the reduction of costly prototypes to the tune of tens to hundreds of thousands of dollars of savings over a year for Best-in-Class companies. It also identified the potential for time savings in the range of 36% improvement in cycle time from concept to release. Companies that implement 3D, and implement it well, are gaining advantages.
Recommendations
The report concludes with a series of recommendations to help companies make the transition from 2D to 3D. Among the conclusions are people-oriented recommendations, hardware considerations, and productivity aids like start parts and templates.
So that was a quick peek into some recent research on moving to 3D, I hope you found it interesting. There is value in 3D, but to succeed it takes more than acquiring some new CAD software. Does the research reflect reality? Do you see it differently? Let us know what it looks like from your perspective.
Posted by Jim Brown on June 11, 2008 | Comments (7)