历史查询   




没有找到相关双语例句 
 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。 
It is preferable to have uniform lateral rigidity in every horizontal part of the structure.


The arrangements of shear walls are the most important factors in the uniformity of lateral rigidity.


Results indicate that the system stability is decided by the vehicle barycenter position and the lateral stiffness of a tire.


However, the lateral stiffness of each of the PDB's load paths is constant.


This is one of the applications of Part (I), in which the angular stiffness, the lateral stiffness and the corresponding stress distributions of Cshaped bellows were calculated.


It introduces lateral stiffness as a practical stability measure to quantify the ability of both circular saw types to resist lateral cutting forces without large deflections.


Design optimization based on a mathematical programming technique involves minimizing the lateral stiffness of the lateral load resistant system for the structure while satisfying specified drift constraints.

 更多 
However, a principal disadvantage of these methods is the inability to describe systems possessing differential (in particular, small) transverse rigidity.


Influence of an elastic medium on the state of stress of a cylindrical shell with a finite transverse rigidity, weakened by a sy




 Air spring is a kind of nonmetallic vibration isolator whose restoring force is supplied by the compressed air in a sealed flexible bladder. The static stiffness, dynamic stiffness and damping property of the air spring can be adjusted through changing its internal pressure. The vertical stiffness of the air spring changes as its deformation changes, so the natural frequency of the air spring vibration isolation system is relevant to the vibration amplitude. The air spring can automatically evade resonance and... Air spring is a kind of nonmetallic vibration isolator whose restoring force is supplied by the compressed air in a sealed flexible bladder. The static stiffness, dynamic stiffness and damping property of the air spring can be adjusted through changing its internal pressure. The vertical stiffness of the air spring changes as its deformation changes, so the natural frequency of the air spring vibration isolation system is relevant to the vibration amplitude. The air spring can automatically evade resonance and effectively restrain the resonance amplitude. The rectangular bagged air spring was studied for the first time, and their vertical and lateral performance was deeply discussed in this paper. It was assumed that the air spring's internal air pressure mainly determined its vertical stiffness. The formulas for calculating the vertical stiffness and the effective supporting area were derived based on the gas polytrope process state equation and the linear film theory respectively The formula for the lateral stiffness was also derived. The experiment results show that the theoretical values meet with the experiment ones very well.  空气弹簧是一种具有可调非线性静、动态刚度及阻尼特性的隔振元件 ,它利用空气压缩的非线性恢复力和阻尼力来隔离振动和冲击。空气弹簧的刚度是随其变形量而变化的 ,因而由它组成的隔振系统其固有频率与振幅有关。空气弹簧还具有自动避开共振 ,从而抑制共振振幅的特性。本文对长方体橡胶 帘布囊式空气弹簧进行了研究 ,从理论和试验两方面 ,对其垂向及横向刚度特性进行了探讨。假设空气弹簧的垂向刚度仅取决于内部气压 ,从工程热力学的气体多变方程出发推导了空气弹簧的垂向刚度。利用线性薄膜理论推导了长方体形囊式空气弹簧的有效承压面积。采用弹性力学的方法 ,解决了其由帘线交织而成的橡胶囊膜断面的横向切变形问题 ,推导了横向刚度。并对空气弹簧进行了试验研究  Considering vibration isolation of the flexible coupling system by complex forces and moment excitation in practical engineering,both the longitudinal stiffness and transverse stiffness of the spring are taken into account.The dynamic transfer equations of the system are deduced with the use of the method of mobility matrix.The effects of the symmetry of the forces and the stiffiness of the spring on the power flow transmitted to foundation are analyzed.The effect of the optimal strategy is discussed.  针对实际工程中力和力矩复杂激励下柔性耦合系统的隔振问题 ,综合考虑弹簧的纵向和横向刚度 ,运用导纳矩阵法推导了主动控制力下系统的动态传递方程。分析了力的对称性及弹簧刚度对传递到基础的功率流的影响 ,探讨了最优化控制的效果  Derailment course of freight train running on the old Luanhe bridge of Jingshan up and down direction line was respectively calculated by the calculation model of special vibration of trainbridge timevariant system and the random energy analysis method of train derailment. Using energy increment criterion, the derailment case of freight train running on down direction line was calculated, and freight train running on up direction line was judged to be not derailed, which correspond to the fact. Meanwhile,... Derailment course of freight train running on the old Luanhe bridge of Jingshan up and down direction line was respectively calculated by the calculation model of special vibration of trainbridge timevariant system and the random energy analysis method of train derailment. Using energy increment criterion, the derailment case of freight train running on down direction line was calculated, and freight train running on up direction line was judged to be not derailed, which correspond to the fact. Meanwhile, the derailment reason of freight train running on down direction line was analyzed. It is pointed that the lack of bridge rigidity is the main reason causing train derailment, and bridge rigidity is the main controlled factor ensuring train's safety running on the bridge. 3 tabs, 6 figs, 7 refs.  基于列车桥梁时变系统空间振动计算模型及列车脱轨能量随机分析方法,分别对京山线滦河老桥上行线及下行线货物列车脱轨全过程进行了计算,采用判别列车脱轨的能量增量准则,得出下行线货物列车脱轨,上行线货物列车不脱轨的结论,此结论与实际符合。同时还对引起该桥下行线货物列车脱轨原因进行了分析,认为桥梁横向刚度不够是引起脱轨的主要原因,并指出桥梁横向刚度是保证桥上列车安全运行的主控因素。   << 更多相关文摘 
相关查询  



