Cutting Modeling of Hybrid CFRP/Ti Composite with Induced Damage Analysis

Materials

Jinyang Xu¹  Mohamed El Mansori² 

[1] MSMP—EA 7350 Laboratoire, Arts et Métiers ParisTech, Rue Saint Dominique B.P. 508, 51006 Châlons-en-Champagne, France

关键词: hybrid composite;    FE modeling;    orthogonal cutting;    induced damage;    interface delamination;    fiber/matrix failure;   

DOI  :  10.3390/ma9010022

来源: mdpi

【 摘 要 】

In hybrid carbon fiber reinforced polymer (CFRP)/Ti machining, the bi-material interface is the weakest region vulnerable to severe damage formation when the tool cutting from one phase to another phase and vice versa. The interface delamination as well as the composite-phase damage is the most serious failure dominating the bi-material machining. In this paper, an original finite element (FE) model was developed to inspect the key mechanisms governing the induced damage formation when cutting this multi-phase material. The hybrid composite model was constructed by establishing three disparate physical constituents, i.e., the Ti phase, the interface, and the CFRP phase. Different constitutive laws and damage criteria were implemented to build up the entire cutting behavior of the bi-material system. The developed orthogonal cutting (OC) model aims to characterize the dynamic mechanisms of interface delamination formation and the affected interface zone (AIZ). Special focus was made on the quantitative analyses of the parametric effects on the interface delamination and composite-phase damage. The numerical results highlighted the pivotal role of AIZ in affecting the formation of interface delamination, and the significant impacts of feed rate and cutting speed on delamination extent and fiber/matrix failure.

【 授权许可】

CC BY   
© 2016 by the authors; licensee MDPI, Basel, Switzerland.