中性面

因此这个平面称为梁的中性面。

This plane is therefore called the neutral surface of the beam .

开口是建筑与外界环境进行能量与质量交换的主要渠道，而中性面则是开口内外的烟气流动主要影响因素。

Opening is the main channel for mass and energy exchange between building and outside environment , while the neutral plane is the main factor affecting the smoke flow through openings .

JD整体放电极线轧制中性面位置的确定

Determination on the place of neutral angle in the rolling process of JD entirety discharge electrode wire

该方法将坐标系建立在板的中性面上，采用层合理论推导出约束阻尼板的动力学方程，其有效性通过数值算例和NASTRAN计算值进行对比来验证。

This method is developed using laminated theory with four nodal plate elements . Its effectiveness is validated by numerical example and NASTRAN model .

圆孔型轧管变形区中性面及轧制半径的确定

Determination of neutral section in deformation zone and working diameter of rolling tube with round pass

所得挠度和中性面位置的结果和精确解非常吻合。

The results are obtained for deflections and neutral-surface positions and are found to be in good agreement with the closed-form solution .

从弹性板顶部向下，造山带下方的挤压逐渐减小，到中性面以下变为拉张，然后张应力逐渐增大，在弹性板底部达到最大；

Beneath the mountain belts , the compression decreases and changes to extension from the top of the elastic plate to the bottom .

液晶高弹体光致弯曲存在两个或三个中性面，应力分布与通常的梁弯曲有很大不同。

There are two or three neutral planes in the light-induced bending beam , whose stress distribution is totally different from the common ones .

研究了后悬架多体系统动力学模型的关键理论和方法，提出了计算简单快捷、精度较高的中性面建模方法。

The key theory and technique of the back suspension model are studied . A simple , rapid and accurate kind of medium-plane modeling method is submitted .

应用小挠度弹性弯曲理论，导出圆形压电复合层薄板的弹性曲面微分方程和复合层薄板的中性面位置方程；

Some elastic curved surface differential equations and neutral planes of circular piezoelectric composite laminates are derived from the elastic thin plate bending theory with small deflection .

结果表明，计算得到的热释放速率、温度分布和烟气中性面高度与实验测得的结果比较吻合。

Numerical data such as heat release rate , temperature fields and hot / cold smoke layer height were obtained , and compared to experimental data and the results were favorable .

中性面作用下的开口流动一方面决定着火房间内的火灾发展，另一方面又是烟气流出着火房间，在建筑内大面积蔓延的主要原因。

The smoke flow through openings determines the fire development within the room ; on the other hand , it is also the main reason for smoke spreading in buildings out of fire room .

结果表明在轧件变形区内，等效应力沿轧制方向逐渐增大，在中性面附近达到最大值（95.20MPa），后又逐渐减少；

The results showed that in rolling stock deforming zone the equivalent stress gradually increased along the direction of rolling and came to maximum value ( 95.20 MPa ) nearby neutral face , than gradually decreased ;

高层建筑不同部位相对中性面位置不同，气体流动形式也不尽相同，所以可以根据高层建筑中性面的具体位置来确定不同部位的烟气控制策略。

Different parts of high-rise buildings positions differently relative to the neutral-plane , the gas flow in different ways , so the specific smoke control strategy will be determined according to the location of neutral plane .

通过全尺寸实验和数值模拟对区域和连续模型进行了检验，发现这两种模型都可以较好的计算排烟仓室的中性面高度，溢流抑止临界排烟量，开口烟气流入质量流量。

Zone model and continuous model were examined by both full-size experiments and numerical simulation . It is found that both of these two models can calculate the neutral plane height , critical exhaust rate , mass inflow through the opening with good accuracy .