In order to reduce the failure probability of rubber sealing rings in reciprocating dynamic seal, a new structure of sealing ring based on bionics was designed. The biomimetic ring has three concave ridges and convex bulges on each side which are very similar to earthworms. Bulges were circularly designed and sealing performances of the biomimetic ring in both static seal and dynamic seal were simulated by FEM. In addition, effects of precompression, medium pressure, speed, friction coefficient, and material parameters on sealing performances were discussed. The results show that von Mises stress of the biomimetic sealing ring distributed symmetrically in no-pressure static sealing. The maximum von Mises stress appears on the second bulge of the inner side. High contact stress concentrates on left bulges. Von Mises stress distribution becomes uneven under medium pressure. Both von Mises stress and contact stress increase when precompression, medium pressure, and rubber hardness increase in static sealing. Biomimetic ring can avoid rolling and distortion in reciprocating dynamic seal, and its working life is much longer than O-ring and rectangular ring. The maximum von Mises stress and contact stress increase with the precompression, medium pressure, rubber hardness, and friction coefficient in reciprocating dynamic seal.
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机译：为了减少往复动态密封件橡胶密封环的故障概率，设计了基于仿生学的密封环的新结构。仿真环在每一侧有三个凹脊和凸凸起，与蚯蚓非常相似。通过FEM模拟凸起圆形设计的圆形设计和密封性能的静电密封和动态密封的仿真环。另外，讨论了预压缩，中压，速度，摩擦系数和材料参数对密封性能的影响。结果表明，Von误判在无压力静态密封中对称分布的仿真密封环的应力。最大von误判压力出现在内侧的第二个凸起上。高接触应力集中在左凸起上。 Von Mises应力分布在中压下变得不均匀。当预压缩，中压和橡胶硬度增加静态密封时，von误差和接触应力增加。仿生环可以避免在往复动态密封中滚动和变形，其工作寿命远比O形环和矩形环长。最大von误判应力和接触应力随着预压缩，中压，橡胶硬度和摩擦系数而往复式动态密封。
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