positive-velocity impulse是什么意思

网络释义

用法例句

Study on forward-directivity velocity pulse generated by strike slip fault in full space;

均匀弹性全空间中走滑断层产生的方向性速度脉冲研究

Because of the existing of the near_fault ground motions with the velocity pulse effect, which has put new question for the seismic design of structure, the characters of the velocity pulse for the typical near_fault ground motions are analyzed.

近断层地震动的速度脉冲效应对结构抗震提出了更高的要求,结合典型的近断层地震记录分析了速度脉冲的基本特性,并对人工近断层地震动的速度脉冲模型进行研究,讨论了典型模型的参数,在此基础上推荐了一种模型参数确定方法,并结合桥墩算例说明了速度脉冲效应对地震反应的影响及推荐模型参数的合理性。

In this paper, the effect of velocity pulse in near field ground motions is emphasized and the influence of velocity pulse to acceleration velocity and displacement in earthquake ground motions is analyzed by using simple impact modal.

着重介绍了几次地震中出现的近场地震动的速度脉冲特性,并利用简化冲击模型来分析速度脉冲效应对地震动加速度、速度、位移的影响。

Many people previously focused on velocity pulses which result from acceleration pulses,however,recently a few researchers began to directly study acceleration pulses,such as to get high frequency pulses and low frequency pulses with empirical mode decomposition.

近场加速度脉冲很早就被人们观察到,由于其对结构的不利影响,多年来一直为不少研究者所关注。

In recent years, the observation data of several strong earthquakes and the simulation of near-field strong ground motion have shown that a large velocity pulse usually exists in near field especially in near fault region during to the impact of rupture directivity effect.

本文采用数值模拟的方法,讨论了速度大脉冲作用下刚性基础假定与考虑土-结构相互作用两种情况下结构反应差别,具体工作如下:(1)对土-结构相互作用数值模拟时,经常遇到的几个问题,如:地基土动力本构模型和材料非线性的模拟、网格的划分、地基土的材料阻尼机制、人工边界、体系基频和阻尼比的确定以及地震激励的施加进行了详细介绍,并给出了相关问题在ANSYS软件中实现的具体方法。

speed pulse generator

速度脉冲信号发生器

CHARACTERISTICS OF INSTANTANEOUS INPUT ENERGY OF GROUND MOTION CONTAINING VELOCITY PULSES

速度脉冲型地震动瞬时输入能特性研究

pulsed-field alternating-gradient accelerator

脉冲场交变陡度加速器

pulsed-field constant-gradient accelerator

脉冲场恒陡度加速器

pulsed integrating accelerometer

脉冲积分式加速度表

Pulsar: A dense, rapidly rotating star that emits pulses of light.

脉冲星：高密度、快速旋转、发射脉冲光的星体。

Factors Affecting the Deposition Rate of Poised Electro-Brush Plated Nickel Coating

脉冲电刷镀镍中沉积速度的影响因素

The rate at which pulses can be sent and received on copper wires is called frequency.

脉冲通过铜线送出和接收的速度称为频率。

New Method for Phase Velocity Compensation of Frequency-doubling of Femtosecond Laser Pulses

飞秒脉冲倍频过程中的相速度补偿新方法

Analysis Of Influence Factors On Transmissio Speed of Anti-well Drilling Mud Pulse

反井钻井泥浆脉冲信号传输速度影响因素分析

New Method for Unambiguous Velocity Measurement of Low PRT Radar

一种低重频脉冲雷达速度模糊解算的新方法

Quadric velocity compensation method for high resolution stepping frequency pulse radar

高分辨率步进频脉冲雷达二次速度补偿方法

TRANSMISSION VELOCITY MODEL IN FREQUENCY DOMAIN OF DRILLING-FLUID CONSECUTIVE PULSE SIGNAL

钻井液连续脉冲信号频域传输速度计算模型

Novel method of velocity ambiguity resolution in pulse Doppler radar

一种脉冲多普勒雷达解速度模糊新方法

Special Group-Velocity Mode in Process of Third-Harmonic Generation of Ultrashort Pulses

超短脉冲三倍频中特殊群速度组合的分析

impulse bandwidth

脉冲(频)带宽(度)

width of transition steepness

(脉冲) 前沿陡度

pulse-operated cyclotron

脉冲操作回旋加速器;脉冲回旋加速器;脉冲运行回旋加速器