دورية أكاديمية
Experimental Analysis of Nonlinear Wave Propagation in Bistable Mechanical Metamaterials with a Defect
| العنوان: | Experimental Analysis of Nonlinear Wave Propagation in Bistable Mechanical Metamaterials with a Defect |
|---|---|
| المؤلفون: | Harre, Samuel R. |
| المصدر: | Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research |
| بيانات النشر: | DigitalCommons@University of Nebraska - Lincoln |
| سنة النشر: | 2023 |
| المجموعة: | University of Nebraska-Lincoln: DigitalCommons@UNL |
| مصطلحات موضوعية: | Bistable mechanisms, Metamaterials, Defect, Nonlinear wave propagation, Materials Science and Engineering, Mechanical Engineering, Non-linear Dynamics |
| الوصف: | Mechanical metamaterials built up of compliant units can support the propagation of linear and nonlinear waves. A popular architecture consists of a one-dimensional chain of bistable elements connected by linear springs. This type of chain can support nonlinear transition waves that switch each element from one stable state to the other as they propagate along the chain. One way to manipulate the propagation of such waves is via introduction of a local inhomogeneity, i.e., a defect in the otherwise periodic chain. Recent analytical and numerical work has shown that based on its initial velocity, a transition wave may be reflected, transmitted, or captured upon interaction with the defect. In this thesis, we experimentally study the nonlinear wave-defect interaction in bistable mechanical metamaterials. We produce a physical bistable chain via fused deposition modeling (FDM) additive manufacturing using polylactic acid (PLA). The defects are introduced by modifying the local stiffness and/or mass at the defect site. This work contributes towards the development of a rational approach to defect engineering for manipulating nonlinear waves. Advisor: Piyush Grover |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| العلاقة: | https://digitalcommons.unl.edu/mechengdiss/191Test; https://digitalcommons.unl.edu/context/mechengdiss/article/1204/viewcontent/Harre_Masters_Thesis.pdfTest |
| الإتاحة: | https://digitalcommons.unl.edu/mechengdiss/191Test https://digitalcommons.unl.edu/context/mechengdiss/article/1204/viewcontent/Harre_Masters_Thesis.pdfTest |
| رقم الانضمام: | edsbas.2BFDBC4A |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |