The Adhesive Contact between a Sphere and a Wavy Surface

The adhesive contact between a sphere and a longitudinal wavy surface is simulated numerically. A modified simulation method is proposed by using Newton BI-CGSTAB method in rectangular coordinate. The effective Tabor parameter is proposed. It is found that when the amplitude of the wavy surface is larger, the contact area is smaller and the pull-off force is smaller. Jump-in from non-contact occurs when the Tabor parameter is large. Jumping from one ridge to the next ridge occurs when the effect Tabor parameter is large and the amplitude of the wavy surface is not too small. Jumping from non-contact to full contact is affected by the amplitude and the wave number of the wavy surface and is also affected by the Tabor parameter.

Project ID:PB10307-1147
External Project ID:MOST103-2221-E182-023