Stresses Analysis of a Cylindrical Coil Spring of Arbitrary Cross Section : 2nd Report, Design and Experiments for Springs of irregular Cross Section

Abstract

numerical calculations have been carried out for springs of irregular cross section by using the theoretical results given in the companion paper (1st report). experimental tests have been performed to clarify the accuracy of the theoretical results, and it is concluded that the theoretical results have sufficient accuracy. The paper proposes a new type spring which has an oval cross section. Stresses along the boundary of the oval cross section have been investigated in detail theoretically and experimentally. The results obtained are compared with those of a circular cross section spring, and it is shown that the oval spring has advantages over the circular cross section spring. This paper also discusses stresses in an elliptical cross section spring and a spring having a rectangular cross section with semicircular sides.