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微視破壊要素に基づくコンクリート構成モデルの開発 Development of the Constitutive Model for Concrete Based on Micro Fracture Element 寺井, 雅和 コンクリート 構成モデル 破壊力学 Griffithの式 微視クラック Concrete Constitutive Model Fracture Mechanics Griffith's Formula Micro Crack P(論文) The purpose of this paper is to propose a new constitutive model for concrete. As the load-carrying mechanism of concrete, a number of micro-crack model are assumed to be distributed with various orientations, sizes and densities in the concrete, and effect of crack growth at the microscopic level is modeled utilizing theories of Linear Elastic Fracture Mechanics (LEFM). Some numerical computations for fracture process of concrete prisms under uniaxial and biaxial tension or compression load are well simulated, using Finite Element Method (FEM) with the proposed constitutive model. The calculation results agree with the experimental ones. 1999-10 jpn departmental bulletin paper https://fukuyama-u.repo.nii.ac.jp/records/8049 AN00217655 福山大学工学部紀要 23 57 66 https://fukuyama-u.repo.nii.ac.jp/record/8049/files/KJ00005781429.pdf application/pdf 905.9 kB 1999-10-01