Question

2. A h elical compression spring is made of 302 stainless steel wire. The outside coil diameter of the spring 1S 33.2 mm. The wire diameter is 2.8 mm. The ends are plain and ground, and there are total of 8.5 turns. Determine the deflection of the spring when it is subjected to a compression force of 10 N. In this condition, will the stress generated in the spring be beyond the maximum allowable torsional stress? (30 points)

Answer 1

A helical Comprescion spyicg is made o 302 sterinlegs steel wire diametes ot diametrf 2.8 mn) -The ends aγe plain and around, and there ase total ot 5 +uss Detesm ine the detlecHon ot the spsing whent is subjected to a compsacion inlegs Steel ie The outside Coil the spsig 9 332 mm The wire tosce ot loN In this Condition. will the Stsegs generated in the epi be he maximum allowable SIo Stseg Soph given expsession ot spoin deleetion 8F33 givn, F Outes d ia ot Spoing 332mm and wise dia d2 3 mm Shears modulis ot Steunjegs stee! G69.000 M Pa

deleeton o eprf Maximum allowable sheer stre 33 211.85 235 SP ing Index 11-85, 2刈45 ks = 1.04.2] 六 0, 0028 てmax = 314.65 MPa | AN-