摘要
考虑黏弹性体性质对衬垫热物理性质的影响,建立了衬垫温升计算模型,并对其进行有限元分析。得出了衬垫温升受滑动速度、衬垫摩擦因数及热量分配系数等参数的影响程度,衬垫温升与滑动速度、摩擦因数、轻载侧拉力和围包角成正比,滑动初始阶段温升变化较大,之后温升趋于平稳,在衬垫接触面的不同深度温升曲线形状有所不同。给出了特定滑动速度下所允许的滑动距离,为研究滑动保护装置投入时间提供理论依据。与实验数据对比,验证了模型的正确性,并具体分析了钢丝绳蠕动状态下的衬垫温升,说明了蠕动不是造成衬垫性能降低的主要因素。
A Temperature rise analysis model was established considering the influence of viscoelastic on the liner heat physical properties,and analyzed by the finite element method.The influence degrees of sliding speed,liner friction coefficient,heat partition coefficients etc.were given.The temperature which changed greater in the initial stage than the last was proportionaal to sliding speed,liner friction coefficient and the pull on the light side.According to the relationship between the maximum sliding speed and the maximum sliding distance,the hoist protection system should be exerted just in time.Using the model proved by the experiments,the squirm temperature rise was analyzed detailedly,the results indicate that it is not the main reason for the liner performance degradation.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2012年第21期2542-2545,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50905179)
国家高技术研究发展计划(863计划)资助项目(2009AA04Z415)
关键词
摩擦提升绞车
衬垫
温升
变热物理性质
有限元方法
friction hoist
liner
temperature rise
variable heat physical property
finite element method
