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calculating method of contact stress for non-circular gears

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Journal of Chongqing University 2015年第1期14卷 19-24页

作者：李纪强刘忠明颜世铛 Zhengzhou Research Institute of Mechanical Engineering

According to Hertz theory, the difference of contact stress for non-circular gears and equivalent gears is compared in the paper, a calculating method of contact stress for non-circular gears by using equivalent gears is researched, and computing formulas of power and rotation speed for equivalent gears are deduced. A numerical simulation of contact stress for non-circular gears has also been conducted based on the finite element method. By the comparison of fitting curves, the feasibility of using equivalent gears instead of non-circular gears to calculate the contact stress is testified.

关键词： non-circular gear contact stress equivalent gear calculating method

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连杆强度计算方法探讨

中国造船 1984年第3期 77-88页

作者：翁德兴上海船用柴油机研究所

本文侧重于探讨连杆强度计算中一些较复杂的问题,包括下列内容: (1)连杆衬套、轴瓦与连杆孔的装配过盈和热过盈的处理方法; (2)考虑连杆螺钉的作用; (3)活塞销、曲柄销对连杆孔的分布作用力的研究; (4)连杆大端结合面受力情况分析; (5)... 详细信息

本文侧重于探讨连杆强度计算中一些较复杂的问题,包括下列内容: (1)连杆衬套、轴瓦与连杆孔的装配过盈和热过盈的处理方法; (2)考虑连杆螺钉的作用; (3)活塞销、曲柄销对连杆孔的分布作用力的研究; (4)连杆大端结合面受力情况分析; (5)连杆强度计算时工况位置的选取; (6)连杆斜约束的处理方法。此外,还研究了处理以上某些问题的简易方法。本文的目的在于探求尽可能逼近实际情况的连杆强度计算所需的各种边界条件及其相应的计算方法,务使其计算结果不仅有定性的而且有定量的价值。

关键词： Strength connecting rod calculating method pre-tight force of connecting rod screw analysis of bearing force on the interface of the big end treatment of oblique bind.

A MODEL FOR NUMERICAL CALCULATION OF UNSTEADYTEMPERATURE FIELD

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 629-632页

作者： S. X. Wang, D. S. Zheng and Y. L. Liu 1) Department of Material Engineering, Luoyang Institute of Technology, Luoyang 471039, China 2) Luoyang Copper (Group) Co., Ltd, Luoyang, China

The model established in this paper for calculating the unsteady temperature field, in which physical parameters varies with temperatures, is simplified as compared with the classical one by defining the heat conductivity as function of temperature and dealing with the latent heat of phase transformation and boundary conditions. The results show that the probability of absolute error less 2℃ between the calculated and measured values in temperature field calculation reaches above 80%.

关键词： temperature field numerical model calculating method

THE MODEL TEST RESEARCH OF HORIZONTAL FORCE ON RIGID SHAFT FURNITURE IN DEEP MINE

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Journal of Coal Science & Engineering(China) 1998年第1期4卷 15-19页

作者：刘志强史天生郭晋蒲王东权

The state of deep mine rigid shaft fUrniture horizontal force calculation in China is introduced and the calculating model of horizontal force is determined. Based on the interaction between hoisting vessel and shaft furniture, the vertical mobel test device is built and a large number of model tests and analyses are carried out. At last, the relationship between horizontal force and hoisting end load, hoisting speed or bunton level interval is gained. The three parameters horizontal force calculating equation of beep mine rigid shaft furniture is given and it can guide the design and calculation of shaft engineering.

关键词： rigid shaft furniture model test horizontal force calculating method

Railway Capacity Calculation Based on Auto-Drawing Train Working Diagram and Computer Simulation

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Railway Capacity Calculation Based on Auto-Drawing Train Wor...

2011高等职业教育电子信息类专业学术暨教学研讨会

作者： Jinjin TANG,Leishan ZHOU,Lu TONG School of Traffic and Transportation of Beijing Jiaotong University,Beijing,China,100044

It reviews the main methods of the study of railway capacity in the *** in China,the defini- tion of railway capacity is different from the other countries,so the main methods of calculating railway capacity are not suit to Chinese *** introduce the coefficient of removal analysis method to calculate the capacity of railway with automatic block section,but its calculating result isn’t *** computer technology improves,the auto-drawing train working diagram(TWD)has become a *** proposes a new approach to calculate the railway capacity,and the calculating method is based on auto-drawing TWD and computer *** goal of this new method is to draw the maximum number of common freight train paths into the original timetable where passenger train paths and important freight train paths are exist and fixed.

关键词： railway capacity computer simulation train working diagram calculating method

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中国土地承载力计算方法研究综述

地理 2001年第2期

作者：郭秀锐毛显强

土地承载力是土地资源评价的重要指标。回顾总结了我国土地承载力计算方法研究进展，将目前的土地承载力的计算方法分为三类：根据环境因子潜力结构计算土地生产潜力的方法（包括环境因子逐段订正模型和气候因子综合模型）、根据植被潜... 详细信息

土地承载力是土地资源评价的重要指标。回顾总结了我国土地承载力计算方法研究进展，将目前的土地承载力的计算方法分为三类：根据环境因子潜力结构计算土地生产潜力的方法（包括环境因子逐段订正模型和气候因子综合模型）、根据植被潜力结构计算土地生产潜力的方法和系统动力学方法，并讨论了各类方法的使用范围、优点及局限性。最后对土地承载力研究领域的发展方向作了简要评述。

关键词：土地承载力计算方法土地生产潜力 Land carrying capacity calculating method Land productionpotentiality

来源：人大复印报刊资料评论

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土体冻胀量计算方法研究（英文）

土体冻胀量计算方法研究（英文）