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For deep excavation, it is the bad strata that affect the slope stability, the seepage prevention and anchoring effects.
It is the main bad strata to affect the foundation and cause environmental hazards.
The mechanical properties used in numerical analysis are indicated in Table 2.
Table 2 Mechanical properties used in numerical analysis a. see reference [3]~[6]; b. see reference [2]~[6] soil cohesion (kPa) friction (°) layer thick (m) unit weight (kN/m³) elastic modulus （MPa) bearing force (kPa) Poisson’s ratio ν plain fill 12 15 4.6 18 6 20 0.3 silty clay with sludgy 15 20 7.8 17 2.5 60 0.31 slate 35 30 - 23 30 300 0.26 Stone columna 20 ~40 - 20 ~2 150 0.3 Deep mixing columnb 10.5 35 - 16 100 - 0.2 Numerical Analysis of the Foundation The Fig. 2 is the foundation model designed.
The Strength Reduce Factor (SRF) is the critical strength reduction factor.

Mechanical Properties of FDM Printed Polymers Understanding how printed structures respond to static loading is the foundation for evaluating their damage resistance.
It has been investigated by the author how silica nanoparticles affect tensile properties of 3D-printed photopolymer composites [12].
These materials exhibit enhanced thermal and mechanical properties compared to PLA and ABS and are increasingly applied in load-bearing or high-temperature environments.
Mechanical Properties and Energy Absorption Characteristics of Additively Manufactured Lightweight Novel Re-Entrant Plate-Based Lattice Structures.
Machine Learning for Predicting Fatigue Properties of Additively Manufactured Materials.

THE STUDY OF THE APPLE JUICE EVAPORATION CHARACTERISTICS ON A HEAT PIPE EVAPORATOR Song Jitian1,a, Liu Jianbo1,b, Zhao Zheng1, Xu Xiaofei1, Wang Shenyu1 1Tianjin University of Science and Technology P.O.B. 563, Dagunan Road, Tianjin, China asongjt@tust.edu.cn, bqingzhoujianbo@126.com Keywords: the apple juice, evaporation and concentration, the heat pipe evaporator Abstract: In this paper, the apple juice was used as the experimental medium, the main factors, such as the evaporating temperature, feed rate, temperature difference of the heat transfer and concentration, were analyzed, the heat transfer of the juice was studied on a heat pipe evaporator, a dynamic model of the apple juice during the constant volume heat process was built up, the heat transfer during evaporation, affected the heat transfer properity in evaporating process were investigated, the experimental relating formula was obtained finally.
However, in actual process the higher temperature would destroy the nutriments of the juice and finally affect the product quality.
The heat transfer coefficient flow rate and heat transfer coefficient versus the evaporating temperature The effect of the temperature difference on the heat transfer coefficient The effect of the temperature difference on the heat transfer coefficient was presented in figure 5, the temperature difference could be varied with the enhancing the steam temperature, meanwhile maintaining the feed rate, the pressure in the evaporator and the properties of the feed.
The product quality after evaporating was directly affected by the quality of the apple juice.
The study of the Chinese medicine rhubarb solution evaporation on a new-style evaporator[J], Mechanical & Electrical Information, 2004, 6: 18-20

The sulfate content of the corrosive solution and the limestone content in cement are the factors mostly intensifying the attack caused by MgSO4 and Na2SO4/K2SO4 solutions, respectively.
At later stages, formation of silica gel and M─S─H (with no binding properties) is expected [9].
This salt was found to affect the integrity of the material at higher depth, compared to Na2SO4, K2SO4 and MgSO4, while led to faster degradation of mechanical properties and expansion [13].
Time and space factors were not considered for the calculations.
The damage pattern of C─S─H is not affected by the sulfate content of this solution.

Force Controlled Low Cycle Fatigue (LCF) Life Evaluation Methodology Based on Unstabilized Material Properties Ilya Men Senior analysis and applied mechanical engineer at Elbit Systems Ltd.
Additional modification coefficients accounting for factors such as mean stress correction and multiaxiality should also be provided.
Thus, according to Henning and Vehoff’s model of gage section for a small-scale tensile specimen, the material properties were not affected by the number of grains [20].
Hardness and tensile properties are summarized in table 1.
Additional factors such as stress triaxiality may be addressed by simultaneous tensile and torsional specimen loading. 3.

Another factor affecting the structure’s strength is the infill pattern.
These affect the internal structure of the materials which may affect the mechanical behavior of the product [9].  
Effect of Infill Patterns on Mechanical Properties.
Fig. 2 presents the effect of various infill patterns on the mechanical properties.
The mechanical properties are summarized in Table 3.

The result shows that the model is accurate enough to be used to analyze the mechanical property of cracked aluminum plates repaired with adhesively bonded composite patches.
These loads can cause damage thereby affecting its load carrying capabilities and safe life.
The dimensions and material properties are given in Table 3.
Conclusions While composite patch adhesively bond repair technology is used increasingly widely, it is more and more important to evaluate mechanical properties of the repaired structure correctly.
Due to few analyzing hours and low computing cost, this model can evaluate mechanical properties of the repaired structure elementarily to supply references for repair design.

Therefore, it is necessary to study the mechanical characteristics of the crack tip near the interface.
No mater in what kind of structure, the interfacial behaviors of materials have great influence on the composite structure's mechanical properties.
The characteristics around the interface severely affect the interfacial mechanical behaviors.
Whereas the steel property is different with that of concrete, we get 22 22σ σ + − ≠ .
Stress Intensity Factor.

Due to excellent mechanical properties and high working efficiency, FRP sheet has attracted significant attention from the field of strengthening in civil engineering.
At present, most researchers agree that the stress level of the reinforcing steel is the deciding factor of the fatigue life of FRP-strengthened beams.
Environmental Effects Environment is an important factor in evaluating the fatigue performance of FRP-strengthened beams.
It may result in degradation of the properties of the materials, affect the bonding properties, thus reduce the durability of reinforced beams.
This phenomenon could be explained that for higher degrees of corrosion, the pits did not significantly change the bar geometry, and thus the stress concentration factor at the ribs did not significantly change.

The chemical composition and mechanical properties are shown in Table 2 and Table 3.
Central segregation of steel cord is mainly caused by columnar crystal, while casting temperature is the key factor affecting the growth of columnar crystal[5].
The actual control situation of mechanical properties of LX70A rod for steel cord is shown as Table 5.
Because of higher content of sorbitic structure, the area fraction of as-rolled experimental steel is 88%-95%, which shows favorable mechanical properties and draw properties.
Typical inclusion shape of LX70A rod (5) Inclusion control of rod The quantity and shape of inclusion is a key factor affecting stranding and breaking of steel cord.