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Based on the dynamic finite element method, Jihong Cui [26] revealed the main influence factors of blasting vibration of underground caverns by simulating the mechanical features of cavity around.
The research of the mechanical properties of anchored caverns under static load is more mature and widely used in engineering [30-31].
Foreign scholars carried on a series of research for dynamic properties of anchored structure.
The conclusion that closed blasting has a little influence on the mechanical properties of the grouting bolt has been drew by Gisle Stjernd [33] through pull-out test of anchor bolt under the explosion load.
In fact, the natural rock contains a large number of defects such as joints, fault age, crack, which lead to the deterioration of the mechanical properties of rock mass, thus disturbance effect of the explosion dynamic load for joint rock mass will be even more significant.

It needs to consider many factors, such as simplify of the shape, the choice of unit types, the treatment of boundary conditions, etc.
The mechanical properties of the diaphragm capsule materials are shown in table 1.
Therefore, in this paper, this device is adopted to test the elastic properties.
The relative error curve of elastic properties is shown in figure 9.
Conclusion For the prediction problem of elastic properties about the vacuum diaphragm capsule, this article utilizes the method of simulation combining with experiment to analyze its elastic properties.

The paper presents the validation of physical properties of refractory concrete with heavy filling, using the measurements under high temperature, assumed for the construction of a thermal storage.
Some additional characteristic to λ is always needed for the evaluation of thermal accumulation properties.
The distribution of temperature in variables r and t can be expressed using the Fourier method and the properties of series of Bessel functions.
Khan, Factors affecting the thermal properties of concrete and applicability of its prediction models.
Soboyejo, Mechanical properties, modelling and design of porous clay ceramics.

The modeling of technological processes such as manufacturing of pipes, heat treatment and deformation of semi-products in a wide temperature range requires knowledge of thermophysical properties of the material and coefficient of thermal expansion (CTE) in particular.
The above mentioned two factors may contribute the significant difference between the ΔV/V value obtained in [18] and in the present investigation.
Composition, Structure, Properties, Reference book, VILS-MATI, Moscow, 2009
Guzanová, Modification of mechanical properties of high-strength titanium alloys VT23 and VT23M due to impact-oscillatory loading, Metals. 9(1) (2019) 80
Shirinkina, Microstructure, phase composition, physical and mechanical properties of titanium alloy VT23 hot-extruded tube, Defect and Diffusion Forum. 410 (2021) 324-329

The forming properties of preformed body panels for hemming operations are improved as a result.
In the area affected by the laser heat treatment, a softening occurs.
To separate the mechanical and thermal effects on the hardness, micro-hardness measurements on the untreated material were completed.
Reducing the hem radius is an important factor in the automotive industry.
The heat treatment also affects the roll in/out behaviour of the specimen.

While the physical and mechanical properties of soil change obviously with the increase of soil depth under different environment, geography and climate conditions.
Even for the same type of soil, distinct differences of physical and mechanical properties as well as heterogeneity will occur when the thickness of soil is larger.
Figure 2 presents the changing curves of degree of consolidation varying with time factor , showing that the consolidation velocity is affected by the variation of coefficients of permeability and compression.
Nonlinear consolidation models of clay with time dependant drainage properties[J].
One- dimension consolidation of soil layer with the soil properties as a power function of depth.

Metal-ceramic granules have been successfully used for machine processing of different details from various classes in order to impart them different physical and mechanical properties, including surface layer reinforcement helping weight optimization, surface sanitation as well as technological process optimization.
In this regard, the study of the mechanical and micro-structural characteristics of the materials obtained is important and relevant for predicting the physical and chemical properties of these materials.
It is well known that the mechanical properties of composite materials depend on the micro-scale solid state structure characteristics of atomic clusters [2-6].
This is why the microcluster structure of a material plays an important role in the analysis of mechanical properties.
Of great interest is the study of the fractal properties of materials and the cluster analysis of microphotographs.

Comparative Studying of Gough, P.S Stress Formula and Kuo, K.K stress Formula Yan-ming ZHANG , Xing-bai LUO, Jian-wei ZHEN,Yan-kun CHEN Mechanical Engineering College of Shijiazhuang, Shijiazhuang China 05000 Zym1553681@163.com Keywords: propellant bed; stress; Gough,P.S stress formula;Kuo,K.K stress formula Abstract.
Bombing bore refers to the bombing bore gun firing process due to the barrel bore pressure exceeds allowable pressure occurs , the consequences are very serious breech bombing caused the event of bombing bore gun will certainly result in crash , which caused the officers to combat great psychological burden , seriously affecting combat effectiveness.
Called stress relaxation factor, indicates the value when the value of the void ratio.
According to the above conclusions stress formula between particles is seeking: (5) is the propellant charge free loading critical porosity, is the propellant density, is the attenuation factor of stress, take , is the speed when , take .
Powder particles are compressed to a certain extent, a homogeneous viscoelastic medium, the mechanical properties of the powder bed changed significantly, so the phenomenon of the formation of such an inflection point.

Introduction In recent decades, large-scale integrated circuit technology and nanotechnology have development rapidly, especially when the characteristic width of the circuit reduces to the nanometer level, the study on indentation, which reveals the nano-scale mechanical properties in various types of electronic components, has become one focus of application researches.
For ultra-thin coating materials, the size of the test objects is small, traditional tensile test can not meet mechanical strength and other physical quantities measurement.
Nano-indentation test has received the test specimen surface defect, the size effect, the crystal orientation etc. complex factor influence.
The maximum displacement of the indenter contrasted to the thickness of the film, 8.1Å, is still very small, thus the far-field boundary conditions will not affect the result of the computation.
At this time the maximum load under various conditions is in the range of 30.17N/m ~ 31.46N/m, which shows change of the specimen size did not significantly affect to the maximum indenter load.

The relevant mechanical properties are listed in Table 1.
The fact implies that the normal grinding force is primary factor, which induces surface/subsurface crack damage layer.
After grinding process, especially, along with disappearance of elastic component, plastic residual component become primary factor, which influence propagation of residual crack.
Coupling of multi-damage is one of conceivable facts that could affect the accuracy of predicting model.
Coupling of multi-damage is one of conceivable facts that could affect the accuracy of predicting model.