The material of the housing was aluminum alloy, with a modulus of elasticity of 71 GPa, Poisson’s ratio of 0.33, and density of 2700 kg/m3. The first six modal shapes of the transmission housing are shown in Figure 11. Figure 11. Modal shapes of the transmission housing under different...
In this paper, GDS dynamic triaxial tests were conducted to study the change rules of the hysteresis curve, axial strain, dynamic elastic modulus, and damping ratio of waste tire rubber-mixed sand-based subgrade model samples with different rubber particle sizes, rubber mixing amounts, and ...
The shock absorber to the natural rubber compound formula as the main use of modified carbon black and silica in situ graft, making the rubber elongation at break of 300% tensile strength greatly improved, moving product, The static stiffness is decreased. And greatly extended the fatigue life ...
Due to the growth in impact pressure, the interior of the sample is closer and the resistance to deformation is greater, so the dynamic elastic modulus increases. Formula (4) shows the quadratic function relationship between the mean strain rate and the dynamic elastic modulus of the ...
Calcareous sand deposits are widespread along the shoreline in tropical and subtropical regions. Microbially induced calcite precipitation (MICP) treatment is a new method for improving the soil’s stiffness and strength. The small-strain shear modulus a
𝐸E, 𝐼I, and 𝐴A denote the Young’s modulus, the area moment of inertia, and the cross-sectional area, respectively. 𝜌ρ is the mass density and 𝑃(𝑥,𝑡)P(x,t) is the applied transverse force per unit length. 𝐾(𝑡)K(t) denotes a time-dependent spring function...
where 𝜎𝑦σy is the yield strength; 𝜎0σ0 is the initial yield strength; 𝐸𝑃EP is the plastic hardening modulus; 𝛽β, hardening parameter; and 𝜀𝑃𝑒𝑓𝑓εeffP is the effective plastic strain. In this model, the Cowper Symonds model [21] is used to reflect the ...
The histogram for ballast Young’s modulus, Poisson’s ratio and density are presented in Figure 4. Figure 4. Summary of ballast properties over the literature: (a) Young’s modulus, (b) Poisson’s ratio, (c) density. For the properties of the fastening system, the Vossloh Zw687a EVA...
Figure 2 shows the length of the cold-water pipe for L uniform pipe, the internal perimeter S, the internal cross-sectional area of the pipe 𝐴𝑓 Af, the external cross-sectional area of the pipe 𝐴𝑜 Ao, the mass of the fluid inhaled per unit length 𝑀𝑓 Mf, the mass of...
However, the Finn model adopted in the numerical model could not capture the modulus increase induced by DC. Ma et al. [15] simulated the dynamic compaction process of gravel soil foundation using PFC2D/PFC3D. The findings revealed that the maximum influence depth of the dynamic compaction ...