Development of a three-dimensional inelastic damage development analysis method for CFRP laminates considering microscopic interfacial damage

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H06267
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Nagoya University
• Principal Investigator: GOTO Keita 名古屋大学, ナショナルコンポジットセンター, 助教 (00760935)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: 機械材料・材料力学 / 複合材料・物性 / 計算固体力学 / 連続体損傷力学 / マルチスケール解析 / 非弾性構成式

Outline of Final Research Achievements

In this study, a multiscale inelastic damage development analysis method for CFRP laminates taking into account damage development behavior at microscopic interfaces was developed to evaluate failure or fracture of CFRP structures accurately. Continuum damage mechanics and an elasto-viscoplastic constitutive equation with a damage variable were introduced into the homogenization theory for time-dependent composites. Using the present analysis method, the damage development behavior at the microscopic interfaces and decrease of macroscopic mechanical properties of the CFRP laminates were analyzed simultaneously.

Free Research Field

計算固体力学