搜索结果: 1-14 共查到“知识库 工学 Acceleration”相关记录14条 . 查询时间(0.059 秒)
ACCELERATION OF TOPOGRAPHIC MAP PRODUCTION USING SEMI-AUTOMATIC DTM FROM DSM RADAR DATA
Automatic DTM Classification Topographic Map
2016/11/23
Badan Informasi Geospasial (BIG) is government institution in Indonesia which is responsible to provide Topographic Map at several map scale. For medium map scale, e.g. 1:25.000 or 1:50.000, DSM from ...
Convergence Acceleration of High Order Numerical Simulations using a Hybrid Spectral Di
Numerical Algorithms Computational Fluid Dynamics Spectral Di
2015/7/3
The goal of this paper is to show how numerical simulations of uid ow using high order methods for unstructured meshes can be sped up using a hybrid multigrid method. In our work we accelerate the ste...
Acceleration of Convergence to a Periodic Steady State in Turbomachinery Flows
Acceleration Convergence Periodic Steady State Turbomachinery Flows
2015/7/2
This paper presents a technique used to accelerate the convergence of unsteady cal culations of time-periodic flows to a periodic steady state. The basis of the procedure is the use of the discr...
Acceleration of CFD and Data Analysis Using Graphics Processors
CFD Data Analysis Graphics Processors
2014/10/24
Graphics processing units function well as high performance computing devices for scientific computing. The non-standard processor architecture and high memory bandwidth allow graphics processing unit...
基于柴油机局部时段振动加速度的缸内燃烧状况（Combustion Estimation Based on Vibration Acceleration Signal from Start of Combustion to Peak Pressure Appearance Timing）
柴油机 缸内燃烧状况 振动加速度 特征参数
2010/12/29
柴油机燃烧峰值压力出现前燃烧过程对应的局部振动信号与缸内燃烧状况密切相关。对比分析了195型及495T型柴油机在该局部时段内振动加速度、缸内压力及其各阶导数的时域波形，基于波形间的相关性，提出了利用振动加速度信号的拐点推测燃烧过程特征点的方法。对比不同工况时局部时段内的缸内压力、压升率、振动加速度及压力升高加速度的时域波形及频谱能量，发现振动加速度信号最大时域波动量及特定频带的能量与缸内燃烧状况密...
针对典型草场板结严重且横走根茎错节致使自繁促生能力下降等问题，设计了牧草切根机具。该机采用凸轮机构驱动直切刀对牧草进行垂直切根，减小了切根阻力和切缝宽度，通过简单操作可实现对不同间距、不同深度牧草进行切根作业，从而达到切断亚表层下的横走根茎、改良草地，扩繁促生的效果。经速度、加速度和受力分析证明，该机满足了设计要求，是比较理想的牧草切根机械。
加工路径段进给速度的转接及加减速处理方法（Transiting and Acceleration/Deceleration Methods for Feed-speed of Machined Path Segments）
高速加工 进给速度 加减速
2010/1/28
针对高速高精加工对数控系统在进给速度控制方面的要求，根据相邻路径段间的转接角大小建立了可直接进行段间转接的条件,并研究了该条件不成立时对转接速度的修正问题。提出了段内加减速的处理基本原则,并在保持路径段长度不变的基础上对路径段内的进给速度重新进行规划，避免了以往插补前加减速方法中减速点和终点预测困难的问题。实际计算结果表明，相对零速度转接加减速处理方法，所提出的方法在同样保证加工精度等基础上提高了...
Acceleration of charged particles in laser beam
Acceleration of charged particles Laser Maser Relativistic dynamics
2010/8/16
The interest in practical development of accelerating devices for charged particles recently has rapidly grown. The elaboration of new theoretical models and many successful experiments resulting in g...
超速飞行——Acceleration沙发
Acceleration沙发 超速
2009/9/10
Acceleration沙发是由年轻丹麦设计师Phillip Grass于今年设计，但尚未进行生产。该沙发是一款带有超速感觉的未来派设计，简单、平和且平衡感强，整体呈现出无缝结合的流线造型，而沙发两侧的圆筒则充当了沙发腿和扶手两个角色。
A Study on the Relationship between Seasickness and Vertical Acceleration Distribution
Seasickness Motion Sickness Motion of Ship Vertical Acceleration Acceleration Distribution Mathematical Model of Distribution
2009/5/19
O’Hanlon et al. gave a full rage data on motion sickness for single frequency sinusoidal vertical motions. When it is used for ship motion, there are some problems because ship motion distributes in w...
The use of helical spring and fluid damper isolation systems for bridge structures subjected to vertical ground acceleration
Seismic isolated structures dynamic analysis vertical motion helical spring
2009/2/20
In this study a combination of helical springs and fluid dampers are proposed as isolation and energy dissipation devices for bridges subjected to earthquake loads. Vertical helical springs are placed...
Wound Healing Acceleration by a Textile Dressing Containing Dibutyrylchitin and Chitin
dressing materials wound healing dibutyrylchitin regenerated chitin
2009/2/5
New textile dressings containing dibutyrylchitin (DBCH) or regenerated chitin (RC) were
prepared in the process of coating a trade polypropylene non-woven material with films of
DBCH or RC. The dry ...
DEVELOPMENT OF AN EARTHQUAKE DAMAGE EVALUATION METHOD FOR BRIDGE STRUCTURES USING ACCELERATION SENSORS
damage evaluation reinforced concrete column shaking table test
2008/12/17
After an extreme earthquake, evaluation of damage and operability of bridge structures is currently done based on visual inspection by bridge experts, and there is a need to develop sensing technolog...
Optimizing the Thermal Regime During the Acceleration of Concrete’s Hardening
the Thermal Regime the Acceleration of Concrete’s Hardening
2010/8/18
Researches conducted at the Faculty of Construction in Jassy showed several factors that may help finding technical solutions which will make possible to economically apply acceleration procedures of ...