In engineering sciences, we classify mathematical models as ‘proper’ or ‘improper’ rather than ‘scientific’ or ‘pseudoscientific’. A model is said to be proper if it is consistent with the relevant mathematical theorems that guarantee the existence and, when applicable, the uniqueness of the exact solution. Otherwise, the model is improper. At present, the large majority of models used in engineering practice are improper. Following are examples of frequently occurring types of error, with brief explanations.
Mathematical models have become indispensable sources of information on which technical and business decisions are based. It is therefore vitally important for decision-makers to know whether relying on the predictions of mathematical models is justified. When properly used, numerical simulation can be a major corporate asset. However, it can become a major corporate liability if the reliability of predictions is not guaranteed. Learn more in our latest blog post.
From all of us at ESRD, we wish you a very happy holiday season! We truly feel that each and every one of our users are part of the ESRD family and we are incredibly grateful to get to work with all of you.
There is much we are thankful for as we approach the end of the year, and we’d like to take a moment to acknowledge some of the reasons we’re looking back fondly on 2023…
At this year’s ASIP 2023 Conference in Denver, CO, ESRD provided a 2-hour training course titled “Enhancements in StressCheck v12.0 for DaDT Analysis of 3D Fastened Connections”, presented a technical paper titled “Experimental Validation of DTA Modeling of Bonded Wing Skin Repairs”, and passed out 3D printed F-35 and C-130 models at our booth inside the Gaylord Rockies Resort & Conference Center.
Read the summary of conference events, view the ASIP training course content (including the presentation and demo videos), and schedule a preview demo of the upcoming StressCheck v12!
It is generally recognized that explainable artificial intelligence (XAI) will play an important role in numerical simulation where it will impose the requirements of reliability, traceability, and auditability. These requirements will necessitate clear thinking about the nature of mathematical models, the trustworthiness of their predictions, and ways to improve their reliability.
Confucius (551-479 BC) tells us, engineers working in the 21st century AD, that having a firm grasp on terminology is an essential prerequisite to success. But why are there so many popular but misleading or meaningless terms floating around in engineering presentations, technical papers, blog articles, trainings and workplace environments? Read more in this blog.
S.A.F.E.R. Numerical Simulation for Structural Analysis in the Aerospace Industry Part 5: An Introduction to StressCheck for High-Fidelity Aero-structure Analysis
In this final post of our “S.A.F.E.R. Numerical Simulation for Structural Analysis in the Aerospace Industry” series, we will profile the stress analysis software product StressCheck, what makes it different from other FEA software and the applications for which it is used in A&D engineering.[…]
In mid-May 2023, ESRD’s Co-Founder and Chairman Dr. Barna Szabó delivered a keynote presentation at the ASME VVUQ 2023 Symposium in Baltimore, Maryland, USA. Dr. Szabó’s presentation, entitled “Simulation Governance: An Idea Whose Time Has Come”, will focus on the goals and means of Simulation Governance with reference to mechanical/aerospace engineering practice. We are pleased to announce that the recording of the keynote presentation is now available.
On February 7, 2023 a 2-hour webinar titled “What’s New and Improved in StressCheck Professional” was provided by ESRD’s Brent Lancaster to a group of StressCheck enthusiasts. This webinar provided demonstrations of the “latest and greatest” enhancements in StressCheck v11.1, and a look toward future development activities happening in StressCheck v11.2. In case you missed it, the webinar slides and the webinar recording are now available!
Dr. Ivo Babuška, co-founder of ESRD, passed away on April 12, 2023 in Albuquerque, New Mexico. He made important contributions to the reliability of finite element methods, the development of a general framework for finite element error estimation, and the development of the p- and hp-versions of the finite element method. We will miss his counsel, his unique insights and quick wit.
Looking for Resources?
Recent News & Events
“Of the three FEA products we use, StressCheck gives me the most confidence when it comes to performing post-processing quality checks on multi-body contact analysis results. StressCheck has the capability to extract any data of interest and convergence information for that data at any location in the model domain; the other two FEA products do not. And when it comes to interference fit multi-body contact solutions, I haven’t found any software to outperform StressCheck.”
In Service Support Center EngineerNavy Fleet Readiness Center-East