1) The concrete three point bending specimen
混凝土三点弯曲试件
2) three-point support damping measuring apparatus for concrete
三点弯曲梁混凝土阻尼测试装置
3) three-point bending concrete beam
混凝土三点弯曲梁
1.
This paper examines the effect of bonded CFRP on the fracture properties of three-point bending concrete beams post-strengthened with CFRP sheets.
本文通过混凝土三点弯曲梁的外贴碳纤维布(CFRP)加固试验,研究外贴CFRP对混凝土梁断裂特性的影响。
4) three-point bending specimen
三点弯曲试件
1.
Modification of size effect formula of fracture toughness of concrete for three-point bending specimens;
三点弯曲试件混凝土K_(IC)尺寸效应公式的修正
2.
MFPA2D C0de is used to simulate the whole failure process of three-point bending specimens of concrete and mortar respectively baJsed on the physical model of three-point bending test of concrete.
根据混凝土试件三点弯曲试验的物理模型,用MFPA数值模拟软件分别对砂浆和混凝土的三点弯曲试件的破坏全过程进行模拟。
5) eccentrically compressed reinforced concrete members
钢筋混凝土压弯试件
1.
The eccentrically compressed reinforced concrete members heated on three faces are loaded in different conditions,namely the after heating, after two hours of high temperature maintenance and after cooling.
本文对19根三面加温至800℃的钢筋混凝土压弯试件进行了高温时、恒温两小时后以及降温后三种温度工况的加载试验,分析了其受力性能的差别,包括试件的破坏特征、极限承载力和变形规律等。
6) Concrete sample
混凝土试件
1.
Study on deformation and failure process infrared information of concrete samples in shearing testing;
混凝土试件在剪切变形破坏过程中的红外信息研究
2.
The reinforcement surface corrosion states of concrete samples of nine types of technical conditions are judged by half-cell potential, A.
用半电池电位法、交流阻抗法、时间电位法判断9种技术条件的混凝土试件中钢筋表面腐蚀状态。
3.
Permeability test is conducted to study pre-splitting exploding effects on concrete sample on the basis of radial spoke permeability theory,to draw a conclusion that coefficient of permeability shows logarithmic growth with explosive,to show power exponent reduction with radius.
基于径向辐合渗流试验原理,对混凝土试件爆炸致裂效果进行了渗透试验研究,得出渗透系数和多种因素有关。
补充资料:弯曲工艺的概念及弯曲件
1.弯曲工艺:是根据零件形状的需要,通过模具和压力机把毛坯弯成一定角度,一定形状工件的冲压工艺方法。
2.弯曲成形工艺在工业生产中的应用:应用相当广泛,如汽车上很多履盖件,小汽车的柜架构件,摩托车上把柄,脚支架,单车上的支架构件,把柄,小的如门扣,夹子(铁夹)等。
弯曲的基本原理:以V形板料弯曲件的弯曲变形为例进行说明。其过程为:
1. 凸模运动接触板料(毛坯)由于凸,凹模不同的接触点力作用而产生弯矩, 在弯矩作用下发生弹性变形,产生弯曲。
2. 随着凸模继续下行,毛坯与凹模表面逐渐靠近接触,使弯曲半径及弯曲力臂均随之减少,毛坯与凹模接触点由凹模两肩移到凹模两斜面上。(塑变开始阶段)。
3.随着凸模的继续下行,毛坯两端接触凸模斜面开始弯曲。(回弯曲阶段)。
4.压平阶段,随着凸凹模间的间隙不断变小,板料在凸凹模间被压平。
5. 校正阶段,当行程终了,对板料进行校正,使其圆角直边与凸模全部贴合而成所需的形状。
弯曲变形的特点: 弯曲变形的特点是:板料在弯曲变形区内的曲率发生变化,即
弯 曲半径发生变化。从弯曲断面可划分为三个区:拉伸区、压缩区和中性层。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条