A Template-Driven Approach to Simulation
In CIMdata's paper titled "The Democratization of Simulation with Intelligent Templates," authors discussed a military vehicle program involving several iterations of the design. "For example, a change from a five-wheel configuration to a six-wheel configuration is processed automatically," the paper said.
In its paper advocating the use of intelligent templates to make simulation more accessible, CIMdata authors showed a diagram of a template with integrated rigid and flexible body simulation, with key input fields exposed.
If enabling common people across the Middle East to rally themselves with social media and technology is the source of the recent Arab Spring that has toppled several long-established authoritarian regimes (with more teetering on the edge), then a template-driven approach that makes simulation more accessible to the common folks may be the way to democratize a practice once reserved for the specialists.
In CIMdata’s recent paper titled “The Democratization of Simulation with Intelligent Templates,” the authors argued, “The core enabler for intelligent templates is the idea of an ‘abstract model.’ This functional model of the product and of the associated simulations remains independent of a particular instance of a product design, and independent of the physics or fidelity of a particular performance simulation.” The key to this proposition is, the authors pointed out, “Experts must create the templates, but non-experts can use them reliably.”
Even though simulation is widely practiced among large enterprises, the authors noted, “The promise of simulation-driven design has not been achieved … Today that solutions represents a complex environment requiring a major investment.” To unlock simulation for a wider audience, the paper recommended “[getting] away from single point tools that solve individual problems … [and] moving away from working directly with geometry.”
The expert-created template will ultimately simplify a simulation scenario into a series of inputs non-experts can supply. These input parameters may be “system-level description, CAD-level description, or an optics description,” the paper suggested. “The simulation environment is set up to run the process quickly as the geometry changes … It can keep changing as engineers learn more about the behavior of the product”
CIMdata paper concluded that the template-driven approach is best-suited to “capture and reuse best practices in an executable form.” The paper is written by CIMdata’s Design and Simulation Council. It’s based on a keynote presentation by Malcolm Panthaki, Comet Solutions, at CIMdata’s PLM Road Map 2011 conference. The paper also discussed the role of direct editing tools like SpaceClaim in the simulation workflow. (For more on this topic, read “Direct Modelers as FEA Pre-Processors” in April issue of DE.)
We face a complex physical world that does need specialist to put proper physics into a model — you won’t expect most design engineers to understand how to model properly a visco-plastic material at high speed loading. but we do need to get FEA pushed to front-line design engineers. I also believe, as the author, that the key is to encapsulate component of model as more or less black boxes that end FEA users can take and assembly without worrying about internals built-in by specialist. Software engineers routinely use commercially available libraries without worrying how their functions are realized. Mech. engineers routinely use component made by suppliers without worrying about how it works internally. Every CAD software has the standard part library. The only way for simulation to reach the maturity is to be able to do the same. there is certainly a long way to go….