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Practical guidelines & common issues Common basic issues This sub-unit provides a useful summary list of what might be regarded as bad practice, common mistakes, pitfalls and rookie errors. This will hopefully provide a useful list of what to avoid, for the novice user and perhaps bring a smile to the face of the more experienced analyst, who may have come across some of these in their travels. Down-right illegal practices are not included here, although one or two listed may be heading in that direction. Some of the so-called basic issues may perhaps be pardonable when working in a team environment off course i.e. in cases when someone who does know what they are doing is directing you and...more
Credibility is Everything (Or How to Get the Most from Verification and Validation…) 5-minute read Sinothile Baloyi - March 31st 2022 “I have not failed. I've just found 10,000 ways that won't work.” - Thomas Edison Sure, and well done for persisting Edison, but how much did that cost in time and materials? Yikes! Luckily, we have come a long way since, and nowadays we can simulate and perform those 10,000 iterations within much, much shorter time frames and without the cost of physical testing. Great for the company’s finances and the environment, not to mention the engineers – after all, who really wants to repeat the same physical test 10,000 times? But – there’s always a but! – how...more
As companies drive towards virtual product development and complete digital descriptions of their products and manufacturing systems, simulation becomes increasingly important. A company’s actual capability to do simulation well, so it is repeatable, reliable, and robust, can become an important factor in quality, cost and time to market, and overall competitiveness. However, research shows that many companies are failing to achieve an effective (optimum) return on their investment in and commitment to simulation. In this opinion piece, Dr. Keith Meintjes of CIMdata—an internationally recognized authority on Product Lifecycle Management (PLM), proposes that simulation can be demonstrably superior...more
The webinar recording can be viewed by clicking this link. The password can be obtained via the member download button. Overview As companies drive towards virtual product development and complete digital descriptions of their products and manufacturing systems, simulation becomes increasingly important. A company’s actual capability to do simulation well, so it is repeatable, reliable, and robust, can become an important factor in quality, cost and time to market, and overall competitiveness. However, research shows that many companies are failing to achieve an effective (optimum) return on their investment in and commitment to simulation. In this opinion piece, Dr. Keith Meintjes of CIMdata—an...more
4. FEM vs. Numerical Simulation In the scenario presented in the previous section, the consultants explained the difference between finite element modeling and numerical simulation. The terms “finite element modeling” and “numerical simulation” are essential in the understanding of the role of Simulation Governance. Please watch this 5-minute video addressing the question of why Numerical Simulation is not the same as Finite Element Modeling. Once finished with this video, proceed to the next section which will offer a series of true/false questions to confirm understanding. Quiz What is the Difference Between Finite Element Modeling and Numerical Simulation? This question cannot be answered...more
Presentation made by I. Riaz at the NAFEMS Americas Conference 'New Frontiers in Product Modeling and Simulation' that was held in Seattle, Washington on 7-9 June 2016....more
These slides were presented at the NAFEMS World Congress 2025, held in Salzburg, Austria from May 19–22, 2025. Abstract There is a long history of the use of engineering simulation for design. This virtual approach is typically followed by physical prototyping, testing and refinement to reach a final design, followed in many cases by a physical testing regime to meet regulatory requirements. For many companies, the use of simulation tools has reduced the time and cost associated with getting new products to market due to the ability to explore multiple designs, and has reduced resource usage and improved product quality by enabling exploration of aspects of manufacturability and long term...more
Integrated computational materials engineering (ICME) is a term many of us will have come across, but may not be completely familiar with. What is it, and why is it of interest to the simulation community? To find out more, David Quinn spoke with Steve Arnold, Technical Lead for Multiscale Multiphysics Modelling at NASA Glenn Research Centre, and member of the NAFEMS Simulation Data Management Working Group and our Americas Steering Committee. This article appeared in the January 2023 issue of BENCHMARK...more
The "What is..." series of flyers provide an introduction to a specific method or technology and are intended to be read by engineers and scientists with no significant expertise or prior knowledge of the topic that is being discussed. This guide to "What is Verification and Validation?" was produced by the NAFEMS Analysis Managment Working Group which has since been renamed as the NAFEMS Simulation Governance and Management Working Group ....more
Mind the Gap 6-minute read Sinothile Baloyi - April 21st 2023 In 1765 James Watt improved Thomas Newcomen’s steam engine, to such an extent that he often gets incorrectly credited with inventing the whole thing himself. How did he do this? Perhaps it was simply serendipity, or could his access at a young age to his father’s shipbuilding workshops - all those hours spent building models of cranes, barrel organs, etc, and becoming intimately acquainted with their mechanics- have given the future inventor the edge? Engineering methods have moved on a lot since then. Now when you hear the word ‘model’ you don’t necessarily picture this: Wooden model of crane, pulley attached. James Watt's...more
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