Wrinkling and Delamination of Thin Films on Compliant Substrates
When the surface of a soft material is coated with a stiff thin film, compression induced buckling instability of the thin film results in surface wrinkles, and wrinkling of the thin film may lead to fracture and delamination. In this work, cohesive interface elements are employed in finite element analysis to simulate progressive wrinkling and wrinkle-induced delamination of an elastic thin film on a compliant substrate. The critical strain for initiation of wrinkle-induced delamination compares closely with an analytical formula based on a strength criterion. Subsequent growth of the delamination crack depends on the interface toughness. Co-evolution of wrinkling and buckle-delamination is simulated using a sufficiently large model. The interaction between the two buckling modes is elucidated.
Thin films Wrinkling Delamination
Haixia Mei Rui Huang
Department of Aerospace Engineering and Engineering Mechanics,University of Texas,Austin,TX 78712,USA
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）