Calculation Method of Lateral Stiffness of Cylindrical Helical Spring

Stiffness is one of the most important performance indexes of spring. The stiffness of cylindrical helical spring can be divided into longitudinal stiffness and transverse stiffness. The longitudinal stiffness is more in-depth studied at present, which can conduct accurate calculation. However, the calculation of transverse stiffness is only based on the hypothesis and can only get approximated constant value, which doesn't tally with the actual situation. In this paper, the transverse loaded cylindrical helical spring was studied, and the calculation model of lateral stiffness was established through the mechanical analysis. By an example calculation study, the influences of some structure parameters on the lateral stiffness of cylindrical helical spring was studied, and a series of influence curves were obtained and explained.