DDS-70 electromagnet kinetic equipment was used to study the dynamic strength, stress-strain relationship, dynamic modulus and damping ratio of three tailing sand types. 使用DDS-70微机控制电磁式振动三轴仪,对三种尾矿砂试样进行了动强度、动本构关系、动弹模阻尼比三方面动力特性研究。
Simulation of Dynamic Modulus and Damping Ratio Test on Filter Material by Particle Flow Code 筑坝反滤料动模量和阻尼比试验的颗粒流模拟
The study on Relative Dynamic Modulus of Elasticity and Microstructure of Concrete 混凝土相对动弹性模量及微观机理研究
Comparison of Compressive Resilient Modulus and Dynamic Modulus of Cement-Stabilized Macadam 水泥稳定碎石静态模量与动态模量比较
The variation coefficients of are larger than those of G/ Gmax, indicating the uncertainty of the dynamic damping is more remarkable than the dynamic modulus. 阻尼比的变异系数要明显大于动剪切模量比的变异系数,表明阻尼比具有更大的不确定性。
Experimental studies were conducted on concrete shear strength, static and dynamic modulus of rigidity and Youngs modulus. 对混凝土的抗剪强度、静力及动力剪切模量和弹性模量作了实验研究分析。
Confining stress has much effect on dynamic modulus and damping ratio. 动模量阻尼比的影响因素有10多个。动应变水平影响动模量阻尼成倍增减;
By using the same horizon shift factors as dynamic modulus master curve, the data of compression strength and compression ratio were perfectly superimpose on storage modulus and storage compliance master curve. 应用与动态模量叠合主曲线相同的水平位移因子,极限抗压强度和压缩率的数据分别与动态储能模量和储能柔量主曲线有很好的叠合。
The effect of different seismic loadings on dynamic modulus and damping ratio of Loess 不同地震荷载对黄土动模量和阻尼比的影响
C/ SiC composites have a higher internal friction value and lower dynamic modulus than SiC/ SiC composites. C/SiC复合材料具有比SiC/SiC复合材料更高的内耗水平和更低的动态模量;
Determination of dynamic modulus poisson's ratio and studies of influencing factor on Asphalt Concrete 沥青混凝土动变形模量和动泊松比的测定及其影响因素的研究
By the test and design for resilient and dynamic modulus of asphalt mixture reinforced by polyester fiber, the new material is further studied in the paper. 本研究旨在通过对聚酯纤维沥青混合料静动态模量的试验研究和设计探讨,对这种新型路面进行更深层次的研究。
Theoretical Model and Mechanism of Dynamic Modulus of Elasticity with Frequency Change 动态弹性模量随频率变化的理论模型及机理
The measurements of dynamic modulus indicates that viscous response dominates in the polymer association system at experimental concentration levels. 动态模量测试表明,该聚合物缔合体系在实验浓度范围内黏性响应占有优势。
The stress dependence of the dynamic modulus was analyzed during the cement-soil dynamic modulus test. Five different stress dependence models were used in the comparative analysis, and it is found that the parabola model has the highest degree of fitting. 分析了水泥土动态模量试验中动态模量的应力依赖性,并采用五种不同的应力依赖模型进行拟合对比分析,认为用抛物线模型拟合的效果最好。
For the designing of foe musical instrument material substitutes, the vibration properties, specific dynamic modulus and logarithmic decrement of some wooden musical instrument materials are measured by the vibration testing system. 对于乐器用代替材料的设计,通过振动测试系统测定了一些木质乐器材料的比动态模量和对数衰减系数等振动特性。
A state-of-art of research on dynamic modulus and damping ratio of soils 土的动模量和阻尼比研究述评
Experimental research on dynamic modulus of elasticity and breaking absorbed energy of cement rock by SHPB 用分段式霍普金森压杆对水泥石动态弹性模量和破碎吸收能的实验研究
The test of dynamic modulus, damping ratio and dynamic strength of saturated flyash is made by vibration triaxial instrument for study many influencing factors dynamic strain, consolidation pressure, sample density and initial shear stress etc. 利用振动三轴仪对饱和粉煤灰的动模量、阻尼比和动强度进行了试验,研究了动应变、固结压力、试样密度、初始剪应力等影响因素。
Both dynamic modulus Ed and damping ratio X increase with the increase of vibration frequency and lime ratio. 频率f愈高,动弹模量和阻尼比愈大。随着掺灰比的增大,石灰土的动弹模量和阻尼比相应增大。
Engage 8180 possessed excellent aging property, higher dynamic modulus and superior wear resistance. 这种胶料具有优异的耐老化性能、较高的动态模量和回弹性以及优异的耐磨性能。
Synergistic effects of these factors on the damage evolvement of the reinforced concrete was studied by measuring the change of dynamic modulus, rebar strain and concrete strain. 通过测量损伤演变过程中钢筋混凝土动弹性模量、钢筋应变和混凝土应变的变化,研究了盐冻循环、钢筋锈蚀与弯曲荷载协同作用下钢筋混凝土损伤失效的演变过程。
The paper abstractly analyzes the relationship between the number of knots and two important parameters of wood vibrational mode which are the damp and natural frequency, because of the conclusion about dynamic modulus of elasticity affected remarkably by the number of knots through transverse vibration of wood. 针对木材横向振动试验中得出节子个数对木材动态弹性模量有显著影响的结论,从理论上分析了节子个数与木材振动模态中两个重要参数阻尼和固有频率的关系。
Dynamic modulus increases while confining stress increasing and damping ratio decreases while confining stress increasing. 固结围压力对动模量阻尼比的影响也非常大,动模量随着固结围压力的增大而增大,阻尼比随固结围压力的增大而减小;
Through the experiments on freeze-thaw, it was studied the influence of the grade of concrete strength, the volume fraction of steel fiber and number of freeze-thaw circulation on the dynamic modulus of elasticity. 通过冻融循环试验,研究了钢纤维体积率、冻融循环次数、混凝土强度等级对冻融循环作用下钢纤维混凝土动弹性模量的影响,分析了钢纤维混凝土剥落和损伤机理;
Four parameters used to estimate the deicer-frost scaling of concrete were investigated in this paper, such as the scaled mass, tensile strength, compressive strength and dynamic modulus of elasticity. 着重从剥落量、抗折强度、抗压强度和动弹模量四个方面研究了混凝土盐冻剥蚀破坏的评定参数。
A Study with Resonance Method on Dynamic Modulus of Elasticity of Plywood 用共振法研究胶合板动态弹性模量
The results show that dynamic modulus and phase angle of the materials has obvious temperature and frequency dependence. 结果表明,伸缩缝材料的动态模量和相位角具有明显的温度和频率依赖性。
Comparative analysis are made for compress strength and dynamic modulus of elasticity before and after corrosion, obtaining the regulations of concrete strength changes after sulfate corrosion. 2. 本文主要对以下几个方面进行了探讨分析:1.对腐蚀前后混凝土的抗压强度及动弹性模量进行了对比分析,得出混凝土经受硫酸盐腐蚀后强度的变化规律。
Soil dynamic properties tests were carried out in the use of dynamic triaxial apparatus and dynamic modulus and damping ratio at different confining pressure were respectively measured. 利用动三轴仪器对大理三塔地基土试样进行了动力特性试验,分别测定了不同围压下地基土动模量和阻尼比。