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【期刊论文】Crystallization Behavior of olytetrafluoroethylene (PTFE)
陈大融, XIAO QUN WANG, , DA RONG CHEN, JIE CAI HAN, SHAN YI DU
,-0001,():
-1年11月30日
For some polymers such as PTFE, the crystallization is so rapid that it is difficult to observe isothermal crystallization by differential scanning calorimetry (DSC). In this investigation, first, isothermal crystallization kinetics of PTFE was followed b
PTFE, glass fiber, composites, isothermal, nonisothermal, crystallization, kinetics, differential scanning calorimetry
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【期刊论文】Model of fluid-structure interaction and its application to elastohydrodynamic lubrication
陈大融, Hong Yiping*, Chen Darong, Kong Xianmei, Wang Jiadao
Comput. Methods Appl. Mech. Engrg. 191 (2002) 4231-4240,-0001,():
-1年11月30日
This paper presents a finite element computational model for a three-dimensional simulation of fluid-structure interactions in an elastohydrodynamic lubrication (EHL) system. Methods on the soft and hard EHL are discussed in detail. To accelerate converge
Fluid-structure interactions, Elastohydrodynamic lubrication, Multigrid techniques, Side leakage, Stress horseshoe
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【期刊论文】Quantitative Comparisons Between Measured and Solved EHL Dimples in Point Contacts
陈大融, P. Yang, M. Kaneta and S. Masuda
Vol. 125, JANUARY 2003, 206-210,-0001,():
-1年11月30日
Using a mineral bright stock oil as lubricant, the dimple phenomena in the circular EHL contacts composed of a glass disk and a steel ball were investigated experimentally with the optical interferometry technique. The traction coefficient was also measur
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【期刊论文】Modified Reynolds Equation for Non-Newtonian FluidWith Rheological Model in Frequency Domain
陈大融, Chen Haosheng, Chen Darong
Vol. 127, OCTOBER 2005, 893-989,-0001,():
-1年11月30日
The purpose of this paper is to provide a lubrication equation for non-Newtonian fluid. Three nonlinear functions instead of common power law model are used to describe non-Newtonian properties more completely. They are shear dependent viscosity, first no
Non-Newtonian Fluid,, Rheology,, Lubrication,, Journal Bearing
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陈大融, 关磊, 汪家道
清华大学学报(自然科学版),2003,43(11):1487~1490,-0001,():
-1年11月30日
为了计算微小型发动机的热负荷,提出了对其气缸体进行热分析的方法。通过理论计算确定热边界条件,建立三维有限元模型对温度场进行数值计算;利用热成像和红外技术测量气缸温度场,以试验数据和计算数值之差为依据反推得到准确的温度场,并在此基础上计算气缸热变形。以排气量为0.33cm3的微小型发动机为例计算其热负荷,分析结果表明:排气窗口使得气缸温度场和热变形发生非轴对称性突变;由于高转速的强冷却效果,11000r/min时温度和变形达到最大值;高速冷却气流和大的散热面积与容积之比提供了良好的冷却效果,同时也降低了热效
微小型发动机, 微系统, 有限元, 热变形, 热成像
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