What’s my point? The EWI modeling group is the equivalent of a really, really good tape measure.
So what do our modelers do? Of all the groups at EWI I was hopeful this would be one I could truly understand at an impressive level of detail (come on… I’m really good at Excel). Instead, it proved to be another admirable candidate for my Technology for the Common Man series. Unlike our other technologies, there aren’t a lot (any?) of cool things to watch when a modeler is working (note how sad it is when an accountant makes this assessment). Writing about watching modelers sitting at a computer felt like a cop-out. Thus feeling a little guilty, I thought I’d interview our modelers to learn more. [Editors note - I was thinking of asking Mark Schimming the new VP of Operations who leads the group to help me out, but as he is merely a welding engineer, I decided to go right to the source. And on a personal note, there are no harder working or more dedicated engineers at EWI than the folks in our modeling group and they quietly do a great job for our members.]
I sat down and spoke with Yu-Ping Yang who patiently explained to me modeling at EWI. He began by saying modeling is a way to save money on a project (clearly he remembered he was talking to an accountant). If you have a big dollar structure you’re building, it’s more cost effective to model how that part will perform before making it.
That is, “model twice, build once.”
Our modelers are also able to optimize a high volume process. If you can get the same part performance using less expensive materials or materials that allow for more efficient manufacturing (> parts per hour) that is a huge win for our members. Now those are a few reasons to use a modeler… not The EWI modeling group. Our modelers have a tremendous breadth of expertise in welding, forming, and all types of joining, including being able to model high temperatures. They have developed models around predicting complex distortion and tolerance outcomes; heat transfer; microstructure and hardness prediction; crash simulation; and cracking and stress. And they have expertise in many common (amongst the modeler types) software tools like Abaqus, D-Form, LS Dyna, MSC Software, and Hyperworks. EWI modelers are able to use our own HPC (“high performance cluster”), multiple modeling specific server platforms, numerous virtual servers, as well as having access to the Ohio SuperComputer center. Best of all, EWI modelers are integrated within our project teams where it makes sense: as part of the design of experiment, design of part, or outcome modeling.
A successful modeling project can take many forms. One that narrows down process variables eliminating wasted effort and cost… One that identifies an outcome over time without having to wait… Or one that saves you from building a structure with less than ideal parameters. Any one of these reasons will save you much more than a trip to Home Depot to remedy.