工程车辆仿生环状过渡阻尼结构减振特性分析

Analysis of Vibration Reduction Characteristics of Biomimetic Annular Transition Damping Structure for Engineering Vehicles

受天然竹子多级多尺度结构的启发,提出一种仿生环状过渡阻尼结构。以仿生环状过渡结构为研究对象,建立有限元模型,采用等效应力、应变能、等效弹性应变以及总变形等特性指标,并与分层结构、分层过渡结构和涡状过渡结构对比,进行结构阻尼特性分析。研究结果表明:环状过渡阻尼结构的内部独立环状间隙放大了阻尼层的剪切应变,增强了阻尼结构的能量耗散;相比其他三种结构,环状过渡阻尼结构综合阻尼性能具有明显的优势。工程实际中,需要根据具体情况进行综合评估,选择合适的阻尼材料和结构设计,以达到最佳的阻尼效果。

Inspired by the multi-level and multi-scale structure of natural bamboo,a biomimetic annular transition damping structure is proposed.A finite element model of a biomimetic circular transition structure was established as the research object,using characteristic indicators such as equivalent stress,strain energy,equivalent elastic strain,and total deformation.The damping characteristics of the structure were analyzed by comparing it with layered structures,layered transition structures,and vortex transition structures.The results show that the internal independent annular gap of the annular transition damping structure amplifies the shear strain of the damping layer and enhances the energy dissipation of the damping structure.Compared with the other three structures,the comprehensive damping performance of the annular transition damping structure has significant advantages.In engineering practice,it is necessary to conduct a comprehensive evaluation based on specific situations,select appropriate damping materials and structural designs,in order to achieve the best damping effect.