Welcome to the July 2026 edition of OpenSees Digital Digest, a monthly summary of content published at OpenSees Digital.
Verification posts continued this month, as I remain motivated to show OpenSees can be used far beyond simulating the nonlinear seismic response of structural and geotechnical systems.
- Buoyed by OpenSees – Shows that the PFEM implementation in OpenSees satisfies Archimedes’ principle.
- Verification Is More Than Matching Numbers – Demonstrates that understanding element formulations is essential when verifying published results in nonlinear structural analysis.
- On Another Plane – Admits a longstanding limitation of the
rigidDiaphragmconstraints in OpenSees, then verifies that a recent change to the source code removes the limitation. - Verification Can Feel Dirty – Reminds us that even when you get the “right” answer, there’s an uneasy feeling if you’re not sure why the results matched.
I’ll be traveling a bit next month, but you can expect a post or two on concentrated plasticity, rigid diaphragms, or whatever questions I encounter along the way.
OpenSees Digital Rewind
From July 2021, five years ago this month.
- How to Record Fiber Response – Answers a frequently asked question on how to obtain fiber stress-strain response from an analysis.
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