Question

Calculate the whipping stress when Mb=105.14Kn-mm, y=20mm, and I=143018.66mm^4?

(a) 11.8N/mm^2

(b) 13.79N/mm

(c) 14.7N/mm^2

(d) 15.9N/mm

I got this question in unit test.

This is a very interesting question from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

The correct option is (c) 14.7N/mm^2

Easy explanation: \(\sigma=\frac{M_bY}{I}\)r

                         = \(\frac{105.14×10^3×20}{143018.66}\)

                          = 14.7N/mm^2