滑动摩擦

During the fabrication process, a low frequency alternative electromagnetic field was employed to improve the properties of composites by EMS.

干滑动摩擦磨损试验表明：复合材料的耐摩擦性比纯基体合金明显提高，施加电磁搅拌后复合材料的耐摩擦性进一步提高，特别是在较大载荷下的耐摩擦性大幅提高，从轻微磨损到急剧磨损的临界转变载荷由58.8N提高到78.8N。

Furthermore, the larger the atomic lattice, the smaller the sliding friction coefficient is.

滑动摩擦系数随晶格常数的增加而降低，而当晶格常数较大时，其变化对滑动摩擦系数影响较小。

I hope you don't mind if I keep rubbing my clit and sliding my fingers deep inside my hot wet cunt.

我希望你不介意我保持我的阴部并滑动摩擦我的手指深埋在我热湿的阴部。

Simulation of micro-milling process is conducted using finite element method. During modeling, the Johnson-Cook's coupled thermal-mechanical model was employed as workpiece material model, the Johnson-Cook s shear failure principle was adopted as work piece failure principle, and the coupled thermal-mechanical hexahedron strain hybrid modules and adaptive grid were used to remesh the workpiece's elements. The friction between the tool and workpiece obeys the amended coulomb's law that combines with the sliding friction and the adhesive friction.

采用有限元方法对微细铣削过程进行模拟，采用Johnson-Cook热力耦合模型作为工件材料模型，采用Johnson-Cook的剪切失效法则作为工件材料的失效准则，采用热力耦合平面应变杂交单元并使用自适应网格技术进行网格划分，刀具与工件间的摩擦采用滑动摩擦区和粘着摩擦区相结合的修正库仑定律。

In the paper,by using Fourier Series,basic harmonic balancing approximation and optimum numerical iterration,the response computation of a two-degrees-of-freedom dry friction damped vibration absorber system with velocith-dependent variable coefficient of sliding friction under harmonic excitation is discussed.

研究了两自由度滑动摩擦系数随相对速度变化的干摩擦吸振系统简谐激励响应计算问题，提出了最优化处理方法，并推导了相应的迭代方程。

It is found that both the FE method in analyzing thecornering tires and the method of dealing with large slip frictional contactproblems are correct and reliable. The interaction between tire and soft ground is studied.

有限元分析结果和试验测试结果有很好的一致性，表明本文提出的轮胎稳态侧偏有限元分析方法是正确可靠的，也表明本文提出的大滑动摩擦接触问题的处理方法是正确可靠的。

Good agreements are found while comparing the FE analysisresults with available analytical results. It shows that the FE method of tireanalysis under driving state and the method dealing with large slip frictionalcontact problems are correct and reliable.

基于本文提出的大滑动摩擦接触问题求解方法，通过在胎圈和轮辋接触节点上施加滑移滚动约束，提出了匀速滚动条件下轮胎驱动特性有限元分析方法，并编制了有限元分析模块。

It shows that the FE method of tireanalysis under driving state and the method dealing with large slip frictionalcontact problems are correct and reliable. The properties of tires under steady cornering state are studied with FEmethod and experiment. Based on the presented contact solution algorithm, a FEmethod is carried out to analyze the properties of tire under steady corneringstate via imposing slip-rolling-constraints on tire bead nodes which contact therim, and the modules are programmed. The mechanical properties anddeformation of tire under pure steady cornering state and steadycornering-driving state are analyzed, and the results show good agreement withthe experimental data.

对匀速侧滑条件下轮胎侧偏特性进行了试验研究和有限元分析研究，基于本文提出的大滑动摩擦接触问题求解方法，通过在胎圈和轮辋接触节点上施加侧偏滚动约束，得到了匀速侧滑条件下轮胎侧偏特性有限元分析方法，编制了有限元分析模块；利用本文给出的有限元分析方法，分析了轮胎在匀速纯侧滑和侧滑-纵滑联合工况下受力变形特性，分析了侧偏角和载荷对轮胎侧偏特性的影响。

The accuracy of the friction model directly affects the position precision,dynamic characteristics and friction compensation of mechanical systems.

针对预滑动摩擦的建模，重点介绍了几种描述预滑动摩擦的数学模型，并对各种模型的特点分别加以讨论。

And the frontal technique is adapted to solve the FE equations. The techniques are studied to deal with the large slip frictional contactproblems between a deflectable body with large deformation and a rigid bodywith flat or curved surface. A new algorithm is presented to resolve such contactproblems, including incremental displacement constraints and force constraints,and the modules are programmed. The performances of tire under static load invertical loading state and camber state are analyzed by this method. And theexperiments were carried out at the same condition as used in analysis process.

研究了大变形柔性体与具有平面及曲面外形刚性体之间的大滑动摩擦接触问题，提出了求解这类接触问题的位移增量约束和主动力增量约束处理方法；编制了大变形柔性体与具有平面及曲面外形刚性体之间的大滑动摩擦接触问题求解模块；利用本文提出的大滑移接触问题处理方法，分析了轮胎在径向静载和静态外倾加载条件下受力和变形，并对部分分析结果进行了试验验证，验证结果表明，本文提出的位移增量约束和主动力增量约束处理接触问题的方法是正确可靠的，而且具有精度高、收敛性好、收敛速度快的优点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。