The following diagram shows a rectangular plate with a circular hole at the ends. The dimension of the plate is shown in the figure. If the ratio of b/r increase, the stress concentration factor Kt will __________

The following diagram shows a rectangular plate with a circular hole

1.	The following diagram shows a rectangular plate with a circular hole at the ends. The dimension of the plate is shown in the figure. If the ratio of b/r increase, the stress concentration factor Kt will __________
A.	increase
B.	decrease
C.	remain constant
D.	cannot comment
Answer» B. decrease

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The following diagram shows a rectangular plate with a circular hole at the ends. The dimension of the plate is shown in the figure. If the ratio of b/r increase, the stress concentration factor Kt will __________

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