1.4: Stress Concentration in Plate with Hole¶

Geometry and Boundary Conditions¶

Loading: A uniform unit pressure load

Isotropic (stress will be the same irrespective of material)

From reference [6]

Stress concentration factor Kt = 2.233 based on equation below (d is hole diameter and W is plate width):

Theoretical stress concentration value using the formula in [6] = 3.72 Pa

Num of Elements	Theory [6]	Intact Direct Solver [%Error]	Intact Iterative Solver [%Error]	Time (s) to solve with <3% error
10K	3.72	3.34 [10.09%]	3.34 [10.09%]
50K	3.72	3.55 [4.47%]	3.55 [4.47%]
100K	3.72	3.62 [2.61%]	3.69 [2.56%]	Direct: 7.8 / Iterative: 66