Vibration Analysis of a Coil Spring by Using Dynamic Stiffness Method

동강성법을 이용한 코일스프링의 진동 해석

  • 이재형 (국민대학교 자동차공학전문대학원) ;
  • 김성걸 (국민대학교 자동차공학전문대학원) ;
  • 허승진 (국민대학교 기계자동차공학부) ;
  • Published : 2000.06.22


The partial differential equations for a coil spring derived from Timoshenko beam theory and Frenet formulae. Dynamic stiffness matrix of a coil spring composed of a circular wire is assembled by using dispersion relationship, waves and natural frequencies. Natural frequencies are obtained from maxima in the determinant of inverse of a dynamic stiffness matrix with appropriate boundary conditions. The results of the dynamic stiffness method are compared with those of transfer matrix method, finite element method and test.