In order to improve vibration isolation, soft components can be used in engineering applications, but this can lead to excessive static deflection. An ideal vibration isolator should have a high static stiffness to ensure that it has sufficient load carrying capacity; at the same time, it should have a low dynamic stiffness to maximize the vibration isolation frequency range. Recently, high static and low dynamic stiffness (HSLDS) mounts have been increasingly shown to have significant benefits for various engineering applications. This paper proposes a method for designing HSLDS mounts based on target force curves. In the design method, the HSLDS mount is obtained by placing a negative stiffness structure in parallel with a positive stiffness linear spring. The negative stiffness structure is achieved by using a roller-slider curve which can be designed according to the requirements to achieve the target force curve. HSLDS mounts are proposed with nth-order stiffness behavior​ which are designed using the method presented here. The results show that, compared with lower order HSLDS mounts based on the same static stiffness, higher order HSLDS mounts have lower dynamic stiffness near the equilibrium position. The Average Method is used to analyze the dynamics of a system based on the nth-order HSLDS mounts, and the displacement transmissibility under harmonic excitation is obtained. The effects of different parameters on the transmissibility are studied. The results show that appropriately increasing the damping ratio is beneficial for the isolation performance of the HSLDS mount. Finally, an experimental prototype is designed and manufactured. The proposed design method and the vibration isolation performance of the HSLDS mount are verified by constant-frequency excitation experiments.

为了改善隔振效果，可以在工程应用中使用软组件，但这会导致过度的静态挠曲。理想的隔振器应具有较高的静态刚度，以确保其具有足够的承载能力；同时，它应具有较低的动态刚度，以最大程度地提高隔振频率范围。最近，越来越多的高静态和低动态刚度（HSLDS）支架对各种工程应用具有重大好处。提出了一种基于目标力曲线的HSLDS支架设计方法。在设计方法中，通过将负刚度结构与正刚度线性弹簧平行放置来获得HSLDS底座。负刚度结构是通过使用滚子-滑块曲线来实现的，该曲线可以根据要求进行设计以实现目标力曲线。HSLDS安装座建议与使用此处介绍的方法设计的n阶刚度行为。结果表明，与基于相同静态刚度的低阶HSLDS支架相比，高阶HSLDS支架在平衡位置附近具有较低的动态刚度。平均法用于基于n来分析系统的动力学通过安装三阶HSLDS，可以获得谐波激励下的位移传递率。研究了不同参数对透射率的影响。结果表明，适当增加阻尼比对于HSLDS安装座的隔离性能是有益的。最后，设计并制造了一个实验原型。通过恒频激励实验验证了所提出的设计方法和HSLDS支架的隔振性能。