振动衰减规律,attenuation law of vibration
1)attenuation law of vibration振动衰减规律
1.Besides the control of blasting method, blasting scale and limiting the maximum charge initiated per delay, the monitoring of the peak particle velocity of blasting induced vibration was conducted on fresh concrete interface between concrete and rock foundation; furthermore, theattenuation law of vibration on fresh concrete and foundation rock under different blasting conditions was found.公伯峡电站厂房基础开挖与厂房砼浇筑平行施工中,在控制爆破方法、爆破规模、一次允许最大起爆药量的同时,对新浇砼面和基础岩石进行了爆破地震波质点振动速度监测,并对不同爆破条件下,新浇砼和基础岩石上的振动衰减规律作了测试。
英文短句/例句
1.STUDY OF ENVIRONMENTAL VIBRATION ATTENUATION RULE IN CHONGQING UNDERGROUND ROCK TUNNEL重庆地铁岩石隧道环境振动衰减规律
2.Study on Attenuation Law of the Blasting Vibration and the Controlling Technology in Deep Metal Mine;深井爆破振动衰减规律与控制技术研究
3.THE RESEARCH OF VIBRATION FOR DYNAMIC COMPACTION CONSTRUCTION不同能级强夯施工下地表振动衰减规律的探讨
4.STUDY ON THE LAW OF BLASTING VIBRATION ATTENUATION REGARDING THE EXCAVATION OF THREE GORGES UNDERGROUND POWER PLANT三峡地下厂房爆破开挖振动衰减规律研究
5.damped oscillation阻尼摆动;阻尼振荡;衰减振荡;衰减振动;减幅振动
6.The Study on the Ground Motion Attenuation Law of Moderate Earthquake Area中强地震活动区地震动衰减规律研究
7.Research of the Vibration Velocity Attenuation Law of the Particle in Wall Rock Bursting Where Hard Rock Tunneling Advances Rectangularly硬岩爆破掘进对直角拐弯后巷道围岩中质点振速衰减规律的研究
8.Study on the Propagation Laws of Subway-induced Vibration and Isolation or Reduction Methods of Building Vibration;地铁激励下振动的传播规律及建筑物隔振减振研究
9.Research on the Shock Absorption Rule and Dynamical Response of Labyrinth Gas Seals with Damping Sleeve;迷宫气封动力响应分析及减振规律研究
10.undamped oscillation无阻尼振荡;连续振荡;持续振荡;不衰减振动
11.The Pattern of Cognitive Speed Slowing down with Age and Its Clinical Application认知速度随龄衰减规律及其临床应用
12.Research on Decaying Law of Oceanic Reverberation Intensity in Three Dimensions;三维环境海洋混响强度衰减规律研究
13.The Study and Application for Seismic Wave Attenuation Rules in Zhongyuan Oil Field中原油田地震波衰减规律研究与应用
14.Research of the Attenuation Rule of the Water Shock Wave Effect for Underwater Drilling Blasting水下钻孔爆破水击波衰减规律的研究
15.Attenuation Rule of Small Diameter Charge Detonation Pressure with the Bound of PMMAPMMA约束下小尺寸装药爆压衰减规律
16.The vibration will decay or damp as a result of the dissipation of energy.振动因能量耗尽而衰减或阻滞。
17.Free Damping Test Method for Vibration Characteristics of Microstructures;微结构振动特性的自由衰减测试方法
18.free damping oscillation vibrometer自由衰减振荡示振仪
相关短句/例句
ground motion attenuation laws地震动衰减规律
1.In most regions of our country,because of the lack of the strong earthquake s prognosticates record,it is hard to get theground motion attenuation laws of a research area,and so the valid figure materials can t be got for the engineering anti-earthquake basis.在我国大多数地区,由于强震观测记录缺乏,难以得到某一研究区的地震动衰减规律,从而无法为工程抗震设防提供有效的数字依据。
3)attenuation rule衰减规律
1.On the basis of theoretical analysis and on-the-spot investigation,theattenuation rule of oscillation speed in Wushan Copper Mine is obtained upon repeated researches on the collected data,providing useful evidences for the clarification of explosive amount.通过理论分析和矿山现场测试,对收集大量的测试数据运用最小二乘法回归原理进行分析,得出了武山铜矿中深孔爆破振动速度的衰减规律,为矿山今后确定一次最大一段起爆药量提供了依据和保障,也可为类似地下矿山的设计和施工提供参考。
2.The ANN forattenuation rule of 3D seismic parameters is studied in the paper.地震动参数的衰减规律在地震工程中有着重要的地位,随着地震动参数观测记录的积累,追求较为全面准确的衰减规律也是一个重要的基本问题。
3.In order to establish a low strain method of quantitative analysis of pile defects considering pile-soil interaction,theattenuation rule of velocity wave along pile shaft was studied under different pile-soil interaction damping coefficients.为了在低应变条件下建立考虑桩土相互作用的基桩缺陷定量分析方法,研究了不同桩土相互作用阻尼系数时速度波沿桩身的衰减规律。
4)attenuation[英][?,tenju"ei??n][美][?,t?nj?"e??n]衰减规律
1.Based on the research of hydrogeological condition,the distribution andattenuation of COD of Sanlidian channel in unconfined aquifer are studied by numerical simulation.在水文地质条件研究的基础上,通过数值模拟对三里店沟水COD在潜水含水层中的分布及衰减规律发现:构成COD的物质在潜水含水层中迁移缓慢,COD衰减梯度较大,为0。
2.Based on the science of combustion,the explosion dynamics and the applied mathematics,the study of gas explosion spreading andattenuation can be made from the reaction angle between the explosion and the environment.瓦斯爆炸的传播和衰减规律的研究是基于燃烧学、爆炸力学和应用数学等学科从爆炸所在环境出发的应用研究。
3.The wave intensity change equations are applied with the purpose of studying the detonationattenuation.目的在于利用瓦斯爆轰的波强度变化方程研究掘进巷道瓦斯爆轰的衰减规律。
5)attenuation law衰减规律
1.Analysis ofattenuation law and characteristic parameters in excavation roadway during gas explosion;掘进巷道瓦斯爆炸衰减规律及特征参数分析
2.Influential factors analysis of blasting vibrationattenuation law;爆破震动衰减规律的影响因素
3.Analysis onattenuation law of axial velocity during the initial stage of tunnel fire;火灾初期隧道轴向风速衰减规律分析
6)attenuation pattern衰减规律
1.Based on the observed data of strong motion acceleration in California and other states of USA,theattenuation pattern of peak horizontal and vertical acceleration and square root of short time mean squares is studied by regressive analyzing method.根据美国加州等地的强震记录,采用回归分析方法研究了加速度记录水平、竖向分量的峰值加速度(PGA)和一定时间窗内加速度均方根(SRSTM S)的衰减规律。
延伸阅读
衰减振动衰减振动attenuationvibration系统受初扰动后不再受外界激励，因受到阻力造成能量损失而位移峰值渐减的振动。又称阻尼振动。例如带阻尼器的弹簧质量系统，其质量为m，弹簧刚度为k，阻尼系数为c，在回复力和阻力作用下作衰减振动的运动微分方程为，式中为无阻尼自由振动的角频率；ζ＝c/(2mωn)为阻尼率。若阻尼较小(ζ＜1)，则振动方程的解为，式中A和j为初始条件确定的常量。严格地说，衰减振动不是周期运动，因其位移峰值按时间的指数规律衰减。但习惯上，仍将同侧相继两位移峰值间的时间间隔称为“周期”，记为Td；相应的称为“角频率”，记为ωd。因此，，即衰减振动通过同侧两相邻的位移峰值所经历的时间大于无阻尼时的周期。通常用对数减幅率δ来量度位移峰值衰减的快慢。其定义是同侧相继两位移峰值之比的自然对数，即。当ζ很小时，阻尼对振动频率影响很小，但使其位移峰值衰减很快。若阻尼较大（ζ≥1），则振动方程的解为：；(ζ＞1)。这时，运动不再是振动，在任何初始条件下，位移最多有一次达到峰值，以后就是无限趋近于平衡位置的衰减运动。通常把ζ＞1的情况称为过阻尼；把ζ＝1的情况称为临界阻尼，即阻尼的大小刚好使系统作非“周期”运动。与阻尼较小的情况和过阻尼情况相比，在临界阻尼情况下，系统从运动趋近平衡所需的时间最短。在电气仪表中常利用过阻尼或临界阻尼抑制指针振动。
