中性层

基于Burgers流变本构模型，对岩层的中性层位置和相对蠕变函数随时间的变化特征进行了系统研究。

The variation characteristics of the position of curved neutral layer and the relative creep function with time are studied systemically based on the rheological constitutive Burgers model .

中性层内移对弯曲回弹的影响

Influence of neutral layer inside displacement on bending springback

抗折试件X方向等效应力的分布趋势是由上表面的压应力向下表面的拉应力逐渐过渡，并且存在一中性层。

The distributed trend of the stress in X direction is tensile stress , which is transitive from the top surface to the bottom , and there is a neutrosphere in the test piece of the resistance to split .

通过引入表面模型取代传统的“中性层”模型，使CAE与CAD的集成成为可能，并突破了原有CAE软件的建模瓶颈。

By using the surfaces model to replace conventional mid plane model , the integration of CAE and CAD becomes possible , and the bottleneck of the application of traditional CAE software is broken .

非对称型钢冷弯中性层的可变性

Variability of neutral layer of asymmetric sectional steel in cold bending

宽板弯曲问题的应力中性层与应变中性层

The Neutral Surfaces of Stress and Strain in Wide PlateBending Process

复杂开口房间火灾中性层位置的计算

Calculation of Neutral Surface Position of Room in Fire with Multi-opening

宽板弯曲时非线性硬化应力中性层位置的求解

Position Solving of Nonlinearity Harden Stress Neutrosphere at Wide Plate Bending

热力状态处于中性层结，等压面上温度均匀分布的热力学态。

(ⅳ) in neutral stratification and uniform temperature distribution on isobaric surface ;

弯曲件的弯曲变形分析及中性层位移

Displacement of Neutral Layer And Bending Analysis of Bending Parts

木质沙发扶手弯曲中性层分析

Analysis of Neutron-Layer for Wood Sofa Handrail Bending

关于非中性层结大气边界层湍流交换系数参数化公式的探讨

An approach of the parameterization model of turbulent exchange coefficient in non-neutral atmospheric PBL

冷弯方矩管中性层内移位置的确定及其应用

Determination and Application of Inward Shifting Position of Stress Neutral Layer of Cold-bent Square Tube

以及无量纲化湍流耗散率φε等湍流特征量在近中性层结条件下显示出与大气稳定度的关系比较微弱。

Dissipation display weak relationships with the atmospheric stability under the near neutral stratification condition .

木材弯曲时，应力中性层与应变中性层发生内移，多向弯曲的中性层是连续的，多向弯曲与单向弯曲受软化和压缩的影响是一致的；

The influence of softening and compressing to solo-direction bending and multi-direction bending is consistent .

关于中性层结大气边界层湍流参量铅直分布的计算分析

The calculation and analysis of the vertical distribution of turbulent parameters in the neutral PBL

柔轮齿圈壁厚中性层

Neutral layer of flexspline 's toothed ring

板料弹塑性弯曲应力应变中性层位置关系探讨

Research on place of stress and strain neutral layer in elastic plastic bending of plate

在板料的中性层上，用放射投影法对复杂钣金固定梁的形状进行展开尺寸研究。

The unfold blank of the complex shape is researched by the method of emit-projection based on sheet neutrosphere .

疲劳源出现在零件受力的中性层附近，并且呈多疲劳源。

And it is many sources curvature fatigue fracture feature . But the neutral layer frequently bear the smallest force .

用等距线作弯曲中性层线及查询功能求弯曲件展开长度；

Calculate the length of run for bending parts by drawing curved neutral layer profile with equidistant lines and query function .

提出了钣金件折弯特征展开的相关算法，通过以中性层为基准的旋转变换完成了钣金件的逐步联动展开。

Bring forward the arithmetic of fold character spread in sheet metal , through rotating transformation making neutral layer as datum plane .

文中以材料力学的中性层理论为理论依据，设计了结构独特的应力集中结构悬臂梁，并对各影响因素进行了详细分析。

Based on the mesne layer theory , the centralized stress cantilever was designed , and the infection factors was analysed in detail .

本文在定常和中性层结条件下应用有限元法初步建立了一个能够处理二线复杂地形上边界层问题的数值模式。

A description is given of the application of the finite element method to solve the two-dimensional neutrally stratified surface-layer flow problems over terrain .

翻边高度理论和试验间存在偏差是由于中性层向内移动所致。

The difference of analysis and experiment results of flanging height is due to the mid-surface is moving to the center of bending curvature .

再利用中性层上下顶点处的位置，用曲线拟合的方法确定出了板材在矫直过程中的反弯曲率；

And then , by using the upper and lower vertices'position of neutral layer , the anti-bend rate was determined by curve fitting method .

给出了中性层结时水面粗糙度、动力摩擦速度及阻力系数与风速和浪高的关系。

Some relationships of roughness length , friction velocity and resistance coefficient with wind velocity and wave height in neutral stratification have been given .

依据卸载变形的分析计算，推导出回弹后中性层弯曲半径及弯曲角变化量的计算公式。

The formulae for calculating the bend radius of neutral plane and the decrement of bend angle after springback were derived by considering the deformation after unloading .

蠕变前期，岩层弹性、黏性参数对中性层位置和变形曲率都有较大影响，但随着时间增加这种影响迅速减弱；

During the earlier time of creep function , the elasticity and viscosity parameters have a great effect on the position and deformation curvature of curved neutral layer .

给出了板料弯曲的应力应变中性层和纯弯曲应变中性层的计算公式，并推出板料弯曲时的变薄系数计算公式。

The computation expression for the strain neutral layer of stress and plastic bending was introduced and so the thinning coefficient computing formula of sheet metal was deduced .