Inverse analysis¶
Inverse analysis
Three modules turn a flexural test into a tension law. They share the same sequence: describe the specimen, set the compression law, import the test curve, run Auto-Fit, read the results, export.
Unnotched beam · strain-based
Inverse analysis of ASTM C1609
Load-deflection from 4-point or 3-point bending of FRC or UHPC beams.
Notched beam · crack-width based
Inverse analysis of EN 14651
Load-CMOD from the notched prism, with the residual strengths fR1 to fR4.
Laminate · strain-based
Inverse analysis of TRC
Load-deflection of a textile reinforced concrete plate.
The sequence¶
| Step | Input tab or button | What you do |
|---|---|---|
| 1 | Geometry | Span, section, loading type, plastic length |
| 2 | Compression Model | Modulus, strength, residual stress, ultimate strain |
| 3 | Tension Model | A starting law, or the suggested values |
| 4 | Import Exp. Data | The test curve, two columns |
| 5 | Auto-Fit | Confirm the modulus, let the solver fit the law |
| 6 | Update Results | Refresh every result tab |
| 7 | Export Report, Download Output Data, Save | Keep the fit and pass the law to a design module |
Read Auto-Fit, the inverse analysis once before the first fit. It explains what the solver adjusts and how to judge the result.