Numerical analysis for the non-matting condition of dry adhesive pillararray structures
Matting phenomenon could be observed not only in the fabricated micro/nano-scale pillar-array structure,but also in the biological nano-hair structures.In the viewpoint of the function,matting phenomenon is undesirable for the dry adhesive structure because the adhesive force could decrease.In this study,we suggested a numerical method to estimate the matting phenomena of pillar-array structure and proposed the equation of non-matting condition.We implemented the interfacial adhesion caused by van der Waals interaction as a body force term in the finite element formulation.Moreover,we showed the feasibility of the proposed method through the convergence and exactness tests.For the simplicity,we considered only two pillars in the analysis of matting.Although we assumed numerical models as plane strain state,it would be conservative to find the criterion for non-matting conditions.Several cases which have different elastic modulus,aspect ratio are examined to obtain the equation of non-matting condition.
Adhesive contact Finite element analysis Dry adhesive van der Waals force
Houkseop Han Young-Sam Cho Wan-Doo Kim
Korea Institute of Machinery and Materials,Daejeon,Republic of Korea
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）