Reply to post: Agreement of Consumers test with Famous Mc / I Formula

Agreement of Consumers test with Famous Mc / I Formula

Assumed that iPhone 6+ and Samsung Note 4 were constructed out of a similar internal structure; in shape and material. Calculated the max stress due to bending load, and compared. The stress on Apple could be 1.5 times higher than Note 4, so is the report from Consumers report on Note 3 which is very close to Note 4 in size. To address this fact, Apple should have been designed 1.5 times stronger.

Stress = M x C / I

M = F x Length, L

C = Thickness, T /2

I = Width, W x T^3

Major Dimensions - Apple : Samsung

Length, L - 158.1 : 151

Thickness, T - 7.1 : 8.5

Width, W - 77.8: 79

Stress Ratio, Apple : Note 4 = La / Ls * Ws / Wa * (Ts/Ta)2 = 1.5