橡胶钢丝网轮式结构阻尼特性分析

发布时间：2018-05-06 16:57

本文选题：履带式车辆 + 轮式结构　；参考：《太原科技大学》2013年硕士论文

【摘要】：本课题针对履带式工程车辆振动剧烈、噪声大等特点，利用传统橡胶隔振器与钢丝网隔振器的优点，制成橡胶钢丝网组合式隔振垫，并将其应用于推土机的支重轮上。为保证橡胶钢丝网支重轮与履带板的良好啮合，根据推土机的工作环境、橡胶钢丝网的材料特性以及支重轮的受力情况，设计了橡胶钢丝网式支重轮的结构尺寸。分析了粘弹性材料及钢丝网结构的特点、耗能原理和相关参数，为橡胶钢丝网式支重轮的减振缓冲提供理论依据。以某厂家某机型为例，建立了整机以及单个支重轮的振动阻尼模型。推导了支重轮的幅频响应函数，为整机的减振分析提供帮助。因为该支重轮是一种新型的结构，并没有在实践中运用。所以有必要验证其力学性能，利用有限元软件对该结构支重轮在三种不同载荷作用下的强度分析，结果表明：该结构支重轮在不同载荷作用下均可满足强度要求。为检验该支重轮的减振缓冲效果，将该结构支重轮与传统刚性支重轮在平地作业、一定坡度作业、单支重轮支撑作业等工况下进行缓冲比较，分析得到，橡胶钢丝网式支重轮其缓冲减振效果均优于传统的刚性支重轮，尤其是在车辆的固有频率附近，，橡胶钢丝网式支重轮的缓冲效果更加明显。
[Abstract]:In view of the characteristics of high vibration and noise of tracked engineering vehicle, this paper makes use of the advantages of traditional rubber isolator and steel wire isolator to make rubber wire mesh combined vibration isolation pad, and applies it to the supporting wheel of bulldozer. In order to ensure the good meshing between the rubber wire mesh supporting heavy wheel and the crawler plate, according to the working environment of the bulldozer, the material characteristics of the rubber wire mesh and the force condition of the supporting wheel, the structure and size of the rubber wire mesh supporting wheel are designed. The characteristics of viscoelastic material and steel wire mesh structure, the principle of energy dissipation and related parameters are analyzed, which provides a theoretical basis for the damping and buffering of rubber wire mesh retaining wheel. The vibration damping model of the whole machine and the single bearing wheel is established by taking a certain type of machine in a factory as an example. The amplitude-frequency response function of the supporting wheel is derived, which is helpful for the vibration reduction analysis of the whole machine. Because the wheel is a new type of structure, and has not been used in practice. Therefore, it is necessary to verify its mechanical properties. The strength analysis of the supporting wheel under three different loads is carried out by using the finite element software. The results show that the strength requirements of the supported wheel can be satisfied under different loads. In order to test the damping and buffer effect of the bearing wheel, this paper compares the structure bearing wheel with that of the traditional rigid support wheel under the conditions of flat ground operation, certain slope operation, single bearing wheel supporting operation and so on. The cushioning effect of rubber wire mesh retaining wheel is better than that of traditional rigid supporting wheel, especially near the natural frequency of vehicle, and the cushioning effect of rubber wire mesh supporting wheel is more obvious.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TB535.1

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