1) test mandrel
试验心轴
2) mandrel test
心轴试验法
3) mandred bend test
心轴弯曲试验
4) mandrel test
心轴试验法<试验涂料的柔韧性>
5) triaxial compression test
三轴试验
1.
Study on reinforced tailing sand by triaxial compression test;
加筋尾矿砂的三轴试验研究
2.
The engineered treatment research of municipal solid waste (MSW) at a suburban building site was investigated in laboratory tests including sieve analyses, triaxial compression tests, simple shear tests, and isotropic consolidation tests to investigate the strength properties of municipal solid waste.
结合北京郊区某工地垃圾土地基的治理工程,对该场地垃圾土样的强度性质进行了室内试验,包括颗粒大小分析、三轴试验、单剪试验以及等向固结试验等。
3.
A series of laboratory triaxial compression tests on sand specimens reinforced with H-V orthogonal inclusions were carried out.
结合已完成的加筋土三轴试验,采用基于离散元理论的颗粒流软件(PFC2D)对试验进行了仿真模拟,较好地拟合了H-V加筋砂土三轴试验的应力–应变曲线,并通过观测颗粒的受力情况分析了H-V加筋砂土的受力机理。
6) tri-axial test
三轴试验
1.
With the relationship between failure criterions and their relevant parameters determined through regress analysis,the results of tri-axial test on the rock mass,the mechanical parameters of the testing-rock were analyzed.
首先对Coulumb-Mohr准则,Hoek-Brown准则,Drucker-Prager准则,以及π平面准则的物理含义及表达式进行了分析,继而依托岩体三轴试验结果,通过回归分析确定了上述破坏准则中的材料常数;而后结合各破坏准则同岩体参数之间的关系,分析了试件岩体的物理力学参数;最后分析了所得参数及上述破坏准则的有效性。
2.
Aiming at some restricts and deficiencies of strain-equivalence hypothesis of Lemaitre and through introducing a statistical damage theory,a new statistical damage constitutive model was established based on the curves obtained from tri-axial tests,which could reflect mutual conversion for brittle and ductile properties of rock.
针对Lemaitre应变等价性假说的局限性与不足,通过引进统计损伤理论,基于岩石三轴试验曲线,建立了能够反映脆延特性及其相互转化特征的岩石损伤统计本构模型。
3.
Tri-axial test is one of the most common soil tests, which brings out the soil constitute model parameters through the measurement of axial strain, radial strain and volume strain.
三轴试验是最常用的土工试验之一,通过测得试样应力和应变得变化来推导土体的本构模型参数。
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