非充气安全轮胎的研究现状

随着车辆行业的不断发展,充气橡胶轮胎爆胎引发的交通事故率越来越高。为了降低爆胎的发生率,世界各大轮胎公司推出了一系列安全性能优异的非充气安全轮胎,本文针对这些非充气安全轮胎的研究现状进行了介绍,为国内非充气安全轮胎的研发及轮胎结构设计提供一定的参考建议。     

铸型涂料的高压无气喷涂

介绍了高压无气喷涂的原理。与传统的空气喷涂相比，高压无气喷涂具有涂层质量好、效率高、省涂料，少污染，可喷各种涂料等优点，适用于铸型涂料的喷涂。特别是在生产大型铸件时，应用高压无气喷涂可显著提高铸件的表面光洁度     

石墨乳喷涂机的研制及使用

介绍了石墨乳气力喷涂机的原理及技术参数,对气力喷涂和无气喷涂两种形式进行了比较。结果表明,气力喷涂具有连续工作喷头不堵塞、清洗方便、造雾机件不磨损,适合国产石墨乳等非理想状态工作介质的喷涂和使用经济等优点。气力喷涂机更具有实用性。     

Flexible cellular solid spokes of a non-pneumatic tire

Non-pneumatic tires (NPTs) have been introduced with a compliant cellular solid spoke component which functions as the air of the pneumatic tire. In this paper, hexagonal honeycomb spokes for a high fatigue resistance design are investigated by seeking compliant hexagonal structures that have low local stresses under macroscopic uni-axial loading. Using the honeycomb mechanics, two cases of hexagonal honeycombs are designed: (i) the same cell wall thickness and (ii) the same load carrying capacity. The elastic limits of the hexagonal honeycombs are obtained from the ABAQUS finite element code considering the geometric nonlinearity of a cellular structure associated with the cell wall buckling and bending. The compliant cellular structures having low local stress values are applied to the honeycomb spokes of an NPT for the structural validation and the local stresses of the honeycomb spokes are investigated under the same vertical loading conditions. Hexagonal honeycombs with a highly positive cell angle have low local stresses and low mass under the same vertical load carrying capability; the Type C honeycomb spokes in this study.