Homogenized inelastic constitutive equation of open-porous bodies: theoretical developments and applications

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360045
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Nagoya University
• Principal Investigator: OHNO Nobutada 名古屋大学, 工学(系)研究科(研究院), 教授 (30115539)
• Co-Investigator(Kenkyū-buntansha): OKUMURA Dai 名古屋大学, 大学院工学研究科, 准教授 (70362283)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 均質化 / 非弾性変形 / 構成式 / オープンポーラス体 / ポア圧

Outline of Final Research Achievements

First, micro-macro relations were derived for developing a homogenized viscoplastic constitutive equation of anisotropic open-porous bodies subjected to pore pressure. Second, using the derived micro-macro relations, the effect of micro-viscoplasticity and pore pressure on the homogenized viscoplastic behavior was theoretically investigated. Third, based on the theoretical findings, a homogenized viscoplastic equation was developed. Then, the resulting constitutive equation was verified by performing finite element homogenization analysis of unit cells of plate-fin structures and thick perforated plates.

Free Research Field

固体力学，計算力学