Dynamic overshooting in 2D periodic materials with square voids caused by sudden flaw appearance |
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Authors: | Jacob Aboudi Michael Ryvkin |
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Institution: | School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Ramat Aviv 69978, Israel |
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Abstract: | The dynamic response caused by the sudden appearance of a flaw in materials in which square voids are distributed in a doubly periodic manner is investigated. A broad range of relative densities corresponding to cellular materials as well as to almost solid ones is considered. In the former case the materials are characterized by either bending or stretch dominated behavior, and different layouts corresponding to both these cases are examined. The flaw models a break of an intervoid ligament in a material which is subjected to a far-field tensile loading. Both cases of a first flaw in undamaged material as well as the case of a new flaw appearance in an already damaged material are addressed. |
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Keywords: | Porous materials Representative cell method High-fidelity generalized method of cells Wave propagation in composites Sudden crack appearance |
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