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Consider a space containing a hole of radius R and an  crack of length A. Establish the Cartesian coordinate systems  at the circular inclusion and the interfacial crack respectively. Let the coordinate origins be at a distance h below the surface. The distance is d between the hole and the crack. The governing equation can be written in the following simplify form if wave impacts on the  space at a certain angle.

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fjtony163: ½ð±Ò+2, ¹ÄÀøÓ¦Öú 2016-04-12 12:32:05
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a hole of radius R and an  crack of length A¡ú a hole with a radius of R and an  crackwith a length of A£»
Let the coordinate origins be at a distance h below the surface.¡úthe coordinate starts below the surface with a distance of h£»
The distance is d between the hole and the crack.¡úThe distance between the hole and the crack  is d£»
simplify form ¡úsimplified form »òÕßThe governing equation can be simplied as follows:....
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radius of hole: R
length of crack:A
distance between the hole and the crack: d
height from bottom to the surface :h
......
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