An elliptical ring is used to implement a novel type of high-static-low-dynamic vibration isolation. Under the compression deformation, the elliptical ring produces a nonlinear restoring force due to the coupling of the tension and the curvature caused by the stretching. For the elliptical ring under a uniaxial pressure, its force-displacement relation is derived from the Euler–Bernoulli beam theory. The force-displacement relation is experimentally validated via a digital force gauge. The dynamic equation is established for the elliptical ring isolator under a harmonic base excitation. It is revealed that the elliptical ring isolator is with high-static-low-dynamic stiffness. The harmonic balance method is applied to determine approximately steady-state responses of the vibration isolator, and thus the displacement transmissibility of the isolator can be analytically predicted. The analytical results show the effects of the eccentricity. The analytical outcomes are numerically confirmed by the direct integration of the dynamic equation. Under certain conditions, there is an optimal eccentricity for the fixed elliptical circumference, and the displacement transmissibility achieves a minimum value at the optimal eccentricity. The elliptical ring isolator is experimentally tested, and the experimental results validate the analytical outcomes.

椭圆环用于实现新型的高静态-低动态振动隔离。在压缩变形下，由于张力和拉伸所引起的曲率的耦合，椭圆环会产生非线性的恢复力。对于单轴压力下的椭圆环，其力-位移关系是从欧拉-伯努利梁理论推导出来的。力-位移关系通过数字测力计进行了实验验证。建立了基于谐波基极激励的椭圆环隔离器的动力学方程。结果表明，椭圆环隔振器具有高静低动刚度。谐波平衡法用于确定隔振器的近似稳态响应，因此，可以解析地预测隔离器的位移传递率。分析结果表明了偏心率的影响。通过动态积分的直接积分在数值上确认了分析结果。在某些条件下，对于固定的椭圆圆周，存在最佳的偏心率，并且位移传递率在最佳的偏心率下达到最小值。椭圆环隔离器已经过实验测试，实验结果验证了分析结果。位移传递率在最佳偏心率下达到最小值。椭圆环隔离器已经过实验测试，实验结果验证了分析结果。位移传递率在最佳偏心率下达到最小值。椭圆环隔离器已经过实验测试，实验结果验证了分析结果。