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According to massive mechanical property tests of materials, Hao et al. made an intensive study of the homogenized model for masonry structure and proposed safe scaled distances for masonry infilled walls subjected to air blast loads.
The first one is the refined model where blocks and mortar can be modeled separately to consider the different material properties, and the interface between them is simulated as common nodes or the contact, as shown in Fig. 1(a).
Fig.3 Uniaxial compression experiment Fig.4 Stress-strain curve From the material properties test results shown in figure 4, we can see that for the obvious brittle property of the autoclaved aerated concrete block, the NO.96 material model(MAT_BRITTLE_DAMAGE) [5] can be used to describe its mechanical behavior better.
References [1] Autocalved Aerated Concrete Properties, testing and design, RILEM Recommended Practice, RILEM Technical Committees78-MCA and 51-ALC，First edition (1993) [2] Han Yongli, Research on the Characteristics and the Protective Technology of Civil Building Structures against Gas Explosion, Shanghai Jiao Tong University (2011)
Mechanical model of domestic gas explosion load, Transactions of Tianjin University (2008)

The material removal mechanism of the EDM process is not regulated by mechanical force, so the machining characteristics of the EDM process are not governed by the mechanical properties of the work piece material.
The machining parameters of EDM are many, so conducting conventional single-factor experiments to reveal the effects of all of them on EDM performance is expensive and time-consuming.
From the designed matrix based on CCD It was observed that discharge current, pulse duration, pause time and discharge voltage speed are the significant factors, which affect MRR and Ra.
For MRR, most significant two-factor interaction effects were present among pulse current and pulse on time, pulse current and off time, pulse on time and off time and pulse-on time and discharge voltage.
However most significant two-factor interactions were pulse current and off time, and pulse current and discharge voltage.

Concrete containing coarse recycled concrete aggregate (CRCA) is known to have inferior mechanical properties to concrete made with NCA.
Another mechanical property reported to be adversely affected by replacing NCA with CRCA is compressive strength.
Petrou, Enhancing mechanical and durability properties of recycled aggregate concrete, Construction and Building Materials 158 (2018) 228-235
Sun, Impact of natural and social environmental factors on building energy consumption: based on bibliometric, Journal of Building Engineering 37 (2021) 102136
Zhang, Mechanical properties of recycled aggregate concrete under uniaxial loading, Cement and Concrete Research 35(2005) 1187–1194

FA properties.
Properties of (a) Sodium Silicate and (b) Sodium Hydroxide.
Compressive strength properties.
Zero Cement/Carbon Concrete) in terms of mixture design, binder types (e.g. fly as, slag, metakaolin, etc.), mixing procedure, curing regime, mechanical properties, etc.
Alzeebaree: Factors affecting the Characteristics of Self-Compacting Geopolymer Concrete, IOP Conf.

Study on the Machinability of Free-cutting Steels 1214 and 12L15 With Coated Tool Y.Y.Wei1, a, Z.Q.Liu1, b, Q.L.An1, c, M.Chen1, d School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, P.R.
The ratio between Mn and S is one of the essential factors which may affect free-cutting ability.
Surface roughness is of great importance because it is used as the critical quality indicator for the machined surfaces and has influence on several properties such as wear resistance, fatigue strength, coefficient of friction, lubrication, wear rate and corrosion resistance of the machined parts[3].
From the view of cutting force, material 1215 leads to a slightly small cutting force comparing with material 12L14.The ratio between Mn and S is an essential factors.
Zhang et al.: Chinese Journal of Mechanical Engineering, Vol.43 (2007) No.9, p.162-163(In Chinese)

Welding residual stress will not only affect the stability of the dimensional accuracy and the body structure of the high-speed train body, but also the interactions with factors such as welding defects, affecting the strength and other properties of the welding of the body structure, reducing the safety and reliability of the structure of the vehicle body .
X-ray stress tester parameters (Cr target) Test methods The fixed roll Ψ0 method Tube voltage 20Kv Radiation CrKα Tube current 4mA Diffraction crystal surface 222 Given peak PearsonⅦ Diffraction angle 156.900 Filters V 2θ scan range 1200-1600 Stress constant －92.1MPa/deg Receiving slit (hole diameter) 1mm Exposure time 2s Welded joints ultrasonic impact treatment process The test selected from left to right respectively numbered A, B, C, D, E, each region has total of 33 measurement points, the distribution shown in Figure 1, the measured points covering the weld, the weld toe and the heat-affected zone.
The ultrasonic impact experiments to control the impact of time, the excitation current and ultrasonic impact head shape three variables, the specific process is as follows: A District-welded zone B 90s-1.5A impact state District C for 60s-1.5A shock state , D area for 90s-2.2A impact state District E 60s-2.2A shock state, weld and heat affected zone, the impact of the flat sheet type head, , the weld toe using round pounding head.
Compressive stress of each part of the value of the degree of release have different smaller compressive stress release value of the heat affected zone, larger weld toe seam compressive stress release value. 2.
Beijing: Mechanical Industry Press, 1982.

Introduction In the modern analysis of structural dynamics of mechanical systems, aeronautics and astronautics engineering structures, much effort is devoted to the derivation of accurate models.
It is difficult for updating unsymmetrical systems like rotating machines affecting by gyroscopic moment because system matrix will be coupled.
(6) (7) where wαi, wωi denote weighting factor for the imaginary and real part of eigenvalues for mode i, respectively.
Define the optimization objective function for Eq. (5) (8) where wα, wω denote the total weighting factor for the imaginary and real part of eigenvalues, respectively.
So, the mass and moment initial can be calculated according to disk dimension and material properties as: mass m=828.9 kg; polar moment of inertia Jp=322.2 kg.m2; diametric moment of inertia Jd=117.1 kg.m2.

China aLevinzhwen@126.com,bhoujunxing@126.com,cnewroom@126.com Keywords: Health management; Hybrid Systems; Mechanical Electrical and Hydraulic Integration(MEHI) systems; Fault diagnosis and Prognosis.
The degradation process of Mechanical Electrical and Hydraulic Integration(MEHI)systems have the characteristics of the hybrid system.
The physical properties of the system are expressed through the model and the changes of the parameters in the model are directly related to some certain physical states.
The systems involve many factors which are mutually related and restricted, and it is necessary to know whether there is a connection between the factors in order to establish a structural model of the system.
System modeling is the most crucial step in the diagnosis process and the quality of the model directly affects the diagnosis conclusion is right or not.

In general, SGP is affected by a viscosity of bone fluid, flow rate, and interstitial pressure distributions.
Furthermore, it could be one of important factor inducing bone remodeling processes.
The interstitial fluid pressure generation characteristics in bone are functions of its poroelastic properties and boundary conditions.
The mostly important factors governing the interstitial fluid flow are the fluid and loading boundary condition.
Becker : Generation of electric potentials by bone in response to mechanical stress, Science.

For the purification of wastewater and harmful impurities, mechanical, chemical, physicochemical and biochemical methods are used.
In turn, slurry storage facilities occupy significant areas and adversely affect the atmosphere and the lithosphere.
Also, dry separation is the least energy-intensive, since it is based on the natural property of the magnetic attraction of iron ores [5-7].
The recovering capacity of the fluidized bed separator of the dry separation depends on the characteristics of the magnetic system, the physico-mechanical properties of the particles of the separated mixture, and also the geometric parameters of the operating zone.
To study the dependence of the total extraction factor of magnetic particles on the thickness of the initial layer of the separated mixture, we set d = 29.8 μm, αi = 15 deg, vk = 0.02 mps in formula (2).