Response characterisation in CFRP notched coupons with energy-based multi-axial failure data

摘要：

A methodology that uses multi-axial testing and dissipated energy (DE) to characterise the mechanical behaviour of laminated composite materials has been further extended to make use of intuitive relationships between material stiffness and DE. The methodology is able to accurately predict the initiation and early progression of damage providing valuable information on the location, intensity and behaviour of damage in a composite specimen. A constitutive relationship was implemented in which the material stiffness was degraded based upon the total work and dissipated energy. The resultant material behaviour demonstrated that response characterisation of composites with complex failure modes using DE is possible, even when employing a simplistic relationship. This suggests a more detailed constitutive relationship will lead to a more accurate prediction of load response and damage behaviour of composite materials.

关键词： CFRP composites damage modelling multi-axial material characterisation

作者: Andrew J. Litchfield Rodney S. Thomson Adrian C. Orifici

作者单位: School of Aerospace, Mechanical and Manufacturing Engineering,RMIT University, GPO Box 2476, Melbour Cooperative Research Centre for Advanced Composite Structures Limited 506 Lorimer Street, Fishermans

会议类型: 国际会议

会议名称: 2011年亚太航空航天技术学术会议(APISAT 2011)

会议地点: 澳大利亚

会议语种:英文

页码: 1-10

在线出版日期: 2011-02-28（万方平台首次上网日期，不代表论文的发表时间）