Intensity of the stress singularity at the interface corner between a bonded elastic and rigid layer

✍ Scribed by E.D. Reedy Jr

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 662 KB
• Volume: 36
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(90)90113-u

✦ Synopsis

A stress singularity of type Kr" (6 < 0) exists at the interface corner between bonded elastic quarter planes. The intensity of this stress singularity, referred to here as the free-edge stress intensity factory K,, characterizes the magnitude of the stress state in the region of the interface corner. The value of K, has been fully determined for a thin elastic layer (L/h > 20) bonded to rigid adherends and subjected to either transverse tension or a uniform temperature change. Specifically, K,= a*h'-"A(v), where rr* is a characteristic stress, 2h is layer thickness. and 1 -1 is the order of the stress singularity. The parameters 1 -i, and A depend only on Poisson's ratio v, and their values are tabulated and plotted. The reported relation for K, is applicable to both plane strain and axisymmetric geometries.