Finite strain and stability · VNV-TET4-TL-POSTBUCKLING-003
TET4 imperfect postbuckling paths
Continuation tracks load against lateral deflection for three imperfect column shapes.
Internal review accepted with recommendationsCampaign version 0.2.0
Recorded values
Main observables and references
Values come from the linked campaign record. Acceptance thresholds are shown separately from observed results.
Model and execution
What was calculated?
- Three imperfection amplitudes are reported: 0.0025, 0.005 and 0.01.
- The reference curves include the perfect finite-element and Euler critical loads.
- The plot follows each imperfect equilibrium path through continuation.
How to read the evidence
What the results say
- The paths show how initial geometry changes the postcritical load response.
- Read the three curves independently; do not reduce them to one universal collapse value.
Scope boundary
Where this case stops
- This is a bounded column study. It is not a general postbuckling or collapse qualification.
- Imperfection values are reproduced as reported; the source plot and model file define their scaling.
Open the calculation method
These white box sheets explain the element, constitutive law or numerical method used by this case.
Reproduce and inspect the source
The source paths below are pinned to one repository commit. Opening the current site does not rerun the original calculation.
Controlled V&V review
docs/verification/tet4_total_lagrangian_structural_v2.md↗Postbuckling campaign scriptscripts/run_tet4_tl_postbuckling_vnv.py↗Figure and source snapshot e367fe58b2b9ebb4aef321424ca775e80e82d9ca. Campaign execution version: 0.2.0. Current site release and original calculation version identify different events.
Related cases
Other recorded calculations in this family.