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DY: Fachverband Dynamik und Statistische Physik

DY 50: Poster: Nonlinear Systems, Patterns, Flows ..

DY 50.23: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster B2

Rectangular wrinkle patterns in modulated skin layers on compliant substrates — •Nancy Mejia Villagran, Fabian Bergmann, Lisa Rapp, and Walter Zimmermann — Universität Bayreuth

We model the post-buckling behavior of wrinkles in thin inhomogeneous solid films supported by a homogeneous substrate under biaxial compression. In thin films on substrates with different compressional loads along the two orthogonal directions, one has a preferred direction (anisotropy). The wave vector of the wrinkles at onset points therefore along the direction with the larger load. If the elastic properties of the thin film are spatially modulated with a modulation wavelength larger than the critical one, we show that rectangular wrinkle patterns are induced for equal biaxial loads, as well as for anisotropic biaxial loads. In the latter case, we find also undulations.