dynamic modulus of elasticitystatic modulus of elasticity采用Pundit、Metriguard、FFT等三种无损检测方法和常规 弯曲法对加拿大扭叶松(lodgepole pine)蓝变与非蓝变实木板材 的动态及静态弹性模量进行检测和比较研究。结果表明,蓝变 材三种动态弹性模量及静态弹性模量均高于非蓝变材;对比分 析表明,蓝变材和非蓝变材的...
YIN J H,,SAADAT F,GRAHAM J.Constitutive modelling of a compacted sand-bentonite mixture using three-modulus hypoelasticity.Canadian Geotechnical Journal. 1990YIN J H,SAADAT F,GRAHAM J.Constitutive modelling of a compacted sand-bentonite mixture using three-modulus hypoelasticity[J].Canadian ...
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts Volume 28, Issue 1, January 1991, Pages A36Analysis techniques and design methods stress analysisConstitutive modelling of soil behaviour using three modulus hypoelasticity ...
Modulus of elasticity perpendicular to bed joints Em 2.2 GPa 3 (CoV = 5 %) Initial shear strength (mean value) fv0 0.13 MPa 6 (CoV = 23 %) Friction coefficient tan α 0.57 6 (R2 = 0.76) Concrete Compressive strength on cubes at the age of 28 days fc,c,28 32.5 MPa 6 (CoV = ...
Teeth continue to mature during childhood, and by adulthood, the physical properties, such as tooth hardness and modulus of elasticity, are improved [10, 11]. In clinical practice, trauma and congenital malformations, including defects such as Molar Incisor Hypomineralization, sometimes require ...
The following constant values are considered: modulus of elasticity E = 200GP a, Poissons ratio ν = 0.3 and P = 100M P a. In addition to the proposed goal-oriented mesh adaptivity (GOMA) procedure, mesh adaptivity based on global refinement, kelly error indicator [25] and conventional ...
Modulus of Elasticity MD Mpa GB/T 13022-1991 ≥2000 3375.0 TD GB/T 13022-1991 ≥1300 2604.0 Thermal shrinkage MD % GB/T 12027-2004 ≤3.0 1.41 TD ≤3.0 1.53 Tear force MD mN GB/T 11999-1989 ≥60 89.5 TD ≥60 73.1 Coefficient of Friction(non/non) ST GB/T 10006-1988 ≤0.6 0.411...
The designed device was tested in experiments to determine the modulus of elasticity of flax plant stems, and the results were compared with data obtained using the vibration method and the straight three-point bending test on a commercial instrument. Due to the high sensitivity associated...
MaterialDensity (kg·m−3)Modulus of elasticity (MPa)Poisson’s ratio Concrete 2500 32500 0.16 Steel cable 7000 200000 0.3 Crushed-stone soil (superimposed soil) 1500 150 0.15 Table 3. Soil parameters. TypeDepth (m)Density (kg·m−3)Shear velocity (m)Poisson’s ratioCohesion (kPa)Intern...
The segment liner is 0.7 m, and C50 concrete material parameters are used, with a modulus of elasticity of 3.5 × 10^4 MPa, Poisson's ratio of 0.2 and mass density of 25KN/m2. Table 1 Physical and mechanical parameters. Full size table Monitoring point setting The numerical ...