【摘 要】
：
Based on a lot of numerical solutions to the problems of the thermal non-Newtonian elastohydrodynamic lubrication and some fatigue tests with rollers, the lubri
【机 构】
：
College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024, China;Institute o
论文部分内容阅读
Based on a lot of numerical solutions to the problems of the thermal non-Newtonian elastohydrodynamic lubrication and some fatigue tests with rollers, the lubrication factor of involute spur gears (called gear for short) is investigated. The results suggest that gear lubrication effects bear close relations to a dimensionless parameter D which is synthetically determined by gearing rotational speed, load, material, dimension and lubricant viscosity. When D≤8, the gear fatigue life increases as the lubricant viscosity is increased; When D＞8, however, the life decreases with the viscosity addition, which is in marked contrast to the lubrication factor ZL recommended by the Intational Standard for Computing Cylindrical Gear Strength. At the end, a set of formulae for calculating gear lubrication factors suitable for different working conditions are advanced.
其他文献
二战结束后,韩中两国由于国际“冷战”格局的制约,长期处于关系不正常状态,直到1992年8月24日,韩中两国正式建立外交关系,从此韩中两国关系进入了迅速和稳定发展的新阶段。从
阅读教学一直是初中英语教学的重点,同时也是难点。在新课改下,初中英语阅读教学提倡让学生在合作探究中阅读、理解。结合初中英语阅读教学实践,就其模式进行简单探究。
Rea
伴随着我国高等教育体制改革的持续深化,一个由政府、社会、高校以及家庭个人来共同承担教育成本的完善机制已经初步形成。但是,随着高校招生规模的不断扩大,经济困难学生的
From the idea of failure of defective structures at high temperature being controlled by two mechanisms: fast fracture due to creep crack growth initiating at t
台湾刑法中有杀伤直系尊亲属加重刑罚的规定,同为中华文明的传承者,大陆刑法中却没有类似的规定。甚至一直被视为讲求“平权”的西方国家,如法国、西班牙,至今仍保有杀伤尊亲
自清末开始，我国一直在探寻地方自治道路，从清末立宪到北洋政府的地方自治，再到省宪运动、联省自治，最终都没有取得效果，以失败而告终。除了政府的努力外，民间也在探寻着地方自治的
The fatigue contrast tests of unload longitudinal direction cer joints as original welded and treated by ultrasonic peening of Q235B in various stress ratio are
随着科技的进步和时代的变迁,传统的高校校园文化正面临着各种文化的冲击和挑战,提高文化品位,把握先进文化的前进方向,已成为高校校园文化建设的当务之急。大学生作为高校的
A new time-domain analysis method that uses second generation wavelet transform (SGWT) for weak fault feature extraction is proposed. To extract incipient fault
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥