@article{Hoppe_2020, title={Numerical simulation of fiber-matrix debonding in single fiber pull-out tests}, volume={2}, url={https://www.bibliothek.tu-chemnitz.de/ojs/index.php/GAMMAS/article/view/437}, DOI={10.14464/gammas.v2i1.437}, abstractNote={<p><span class="fontstyle0">The present work deals with the numerical</span> <span class="fontstyle0">crack simulation of fiber-matrix debonding in single fiber </span><span class="fontstyle0">pull-out tests. For this purpose, two models are used: a </span><span class="fontstyle0">finite element model (FE model) with the cohesive zone </span><span class="fontstyle0">approach and a peridynamic model. For calibration a </span><span class="fontstyle0">reference experiment is applied. In addition analytical </span><span class="fontstyle0">equations are used for reference values. The influence of </span><span class="fontstyle0">the model parameters and the material parameters of</span> <span class="fontstyle0">the cohesive zone model on the force-displacement curve</span> <span class="fontstyle0">is investigated. Besides the free fiber length, the critical</span> <span class="fontstyle0">interface strength, the critical energy release rate as well</span> <span class="fontstyle0">as the initial interface stiffness have a great influence on</span> <span class="fontstyle0">the force-displacement curve of the pull-out test. From </span><span class="fontstyle0">the crack simulation it can be seen that Mode I has an in</span><span class="fontstyle0">fluence on the crack initiation, but further crack growth</span> <span class="fontstyle0">after initiation is dominated by Mode II. The FE model</span> <span class="fontstyle0">can be calibrated in a way that the crack initiation point</span> <span class="fontstyle0">and the maximum force correspond to the reference ex</span><span class="fontstyle0">periment. The peridynamic model depicts a comparable </span><span class="fontstyle0">crack formation process</span>.</p>}, number={1}, journal={GAMM Archive for Students}, author={Hoppe, Lukas}, year={2020}, month={Dec.}, pages={21–35} }