ABSTRACT

Pressure can sometimes be utilized to increase or decrease the strength of adhesion. This phenomenon is analyzed for pull-off of a long, flat, rectangular punch from a long rectangular membrane. A one-dimensional nonlinear analysis is conducted. The pressure is applied to the membrane, and then the adhered punch is pulled upward. Both force control and displacement control are considered, and the pressure may be positive (acting upward) or negative (acting downward) on the membrane. The membrane is assumed to be linearly elastic, and a von Kármán-type theory is used to allow moderate displacements. A JKR-type theory of adhesion is adopted. The effects of the work of adhesion, residual stress, and prestretch are investigated. With an increase in pressure, the maximum force decreases, the pull-off deflection of the punch relative to the initial flat membrane level increases, and the total punch deflection from the pressurized membrane may increase or decrease.

摘要

有时可以利用压力来增加或降低粘合强度。分析该现象以从长矩形膜上拉出长而扁平的矩形冲头。进行一维非线性分析。将压力施加到膜上，然后将粘附的冲头向上拉。同时考虑力控制和位移控制，膜上的压力可以是正的（向上作用）或负的（向下作用）。假定膜是线性弹性的，并且使用 von Kármán 型理论来允许适度的位移。采用JKR型粘附理论。研究了粘附功、残余应力和预拉伸功的影响。随着压力的增加，最大力减小，