97 t 3 1397 73 4792 mm3 5t 2 12 5t maximum bending

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: connecting rod (i.e. whipping stress). We know that mass of the connecting rod per metre length, m1 = Volume × density = Area × length × density = A × l × ρ = 11t2 × l × ρ ...(∵ A = 11t2) = 11(0.0007)2 (0.38) 8000 = 1.64 kg ...[∵ ρ = 8 000 kg /m3 (given)] ∴ Maximum bending moment, Mmax = m . ω2 . r × l 93 = m1 . ω2 . r × l2 93 ...(∵ m = m1· l) 2 (0.38)2 2π × 1800 1.64 (0.095) = 51.3 N-m = 60 93 = 51 300 N-mm and section modulus, Z xx = 419 t 4 2 I xx = × = 13.97 t 3 =13.97 × 73 = 4792 mm3 5t / 2 12 5t ∴ Maximum bending stress (induced ) due to inertia bending forces or whipping stress, σb (max) = M max 51 300 = = 10.7 N / mm2 4792 Z xx Since the maximum bending stress induced is less than the allowable bending stress of 80 N mm2, therefore the design is safe. Internal Combustion Engine Parts n 1161 32.16 Crankshaft A crankshaft (i.e. a shaft with a crank) is used to convert reciprocating motion of the piston into rotatory motion or vice versa. The crankshaft...
View Full Document

This note was uploaded on 09/30/2012 for the course MECHANICAL 403 taught by Professor A.thirumoorthy during the Spring '11 term at Anna University.

Ask a homework question - tutors are online