| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Estimation and Prevention of Strain Localization in Shear Tests |
| Author(s) |
Heinrich Traphöner, Till Clausmeyer, A. Erman Tekkaya |
| On-Site Speaker (Planned) |
Heinrich Traphöner |
| Abstract Scope |
The localization of strain in conventional shear tests and in-plane torsion tests is analysed for three different materials, namely CP1000, DP1000, and DC04. The influence of material properties, such as strength, strain hardening, and strain gauge length on the measurement of shear strains is investigated experimentally and by a new analytical approach. The weakly hardening high-strength complex-phase steel CP1000 shows experimental and analytical deviations up to 25% of the determined strain depending on the evaluation strategy. Such devia-tions will lead to crucial errors for the calibration of fracture curves and damage models. By a new grooved in-plane torsion test specimen shear tests can be performed without the influence of the localization of strain. Strain measurements can thus be performed more exactly nearly regardless of the strain gauge length and hard-ening behavior. In first experimental results the deviation is below 4.6% for CP1000 and below 0.5% for DC04. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |