高機能・構造複合材料の破壊解析

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The complex heterogeneous nature of composites and concrete with suffering complicated processes of loading and environmental conditions additionally makes it highly difficult and burdensome in numerical prediction of progressive failure and damage. In a similar manner, accurate numerical modeling of imperfections/failure in polarized functional materials to some extent is quite challenging and often not trivial due to the anisotropic material behaviors and inherent coupling effect of different fields (electric, magnetic, mechanical, temperature, etc. The failure of structures and materials can arise during the manufacturing process or in-service. Such failure strongly affects the performance of structures and systems. The overriding objective of the applicant’s research has been to develop effective computational numerical methods in terms of enrichment, adaptivity, smeared approaches, and their variants for localized failure and instabilities of advanced functional composite materials and quasi-brittle materials (concrete). Research implementation and results have been obtained from this project can be stated as follows. We have developed the local enrichment techniques and the continuum damage models for modeling crack and damage problems of concrete, solids and advanced functional composites. We also have developed the local mesh refinement extended finite element method for fracture problems. Obtained results have been published in the professional scientific journals and have been presented at various professional conferences.