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Kim[[] H.G.Kim, H.S.Son, S.H.Park, Development of Thermal-Mechanical Coupled Simulation Skills for Hot Press Forming Tool Design.
Different from stamping at room temperature, thermo-mechanical analysis should be considered at hot stamping process.
The thermal and the phase transformation effects at the cooling stage will both affect the final part mechanical properties.
The plastic deformation of metal in the specified thermal state will lead to dynamic recovery, dynamic recrystallization and static recrystallization that affect the grain size and distribution of dislocation so as to soften steel.
Y is correction factor。

Since its invention in American in 1935, parking meter has experienced a developing process from mechanical to electronic operation, from inserting coin to intelligent card (IC card) operation [2].
Taking Guangzhou as an example, it set up 1957 parking meter berths on 54 municipal roads in the urban area in 2006; it increased to about 6000 parking meter berths on 102 municipal roads in 2007; and it had increased to more than ten thousand berths by 2010 [3]. 1.2 Problems existing in the sustainable design of parking meter 1) The equipment operation depends on the energy supply of AC or battery, it is less than satisfactory in the maintenance management of the equipment and in aspects of energy saving and environment protection. 2) Shells of existing parking meter times are made of zinc alloy, its corrosion resistance is relatively poor, its tensile strength under high temperature and impact property under low temperature decrease significantly, therefore, and it can't meet the requirements in weather ability. 3) In the aspect of service design of the product, the existing parking meter is based on the management architecture design of single subsystem model, it is low in technological
In the technology of rainwater power generation, by making use of the principle that transforming mechanical energy generated when the rain falls into electrical energy generated in piezoelectric effect when the piezoelectric ceramic is deformed, this paper has studied the factors affecting energy conversion efficiency of piezoelectric ceramic thin film in the technology of rainwater power generation.
Aluminum alloy is not only superior than zinc alloy in the impact resistance, collision resistance and the adaptation to hygrothermal environment with frequent exchange between high and low temperatures, also, it can be recycled perfectly, as long as being separated properly, it can be melted and recast with the same properties and performance of primary aluminum, which has met the principle and requirements of C2C in “using the hyper-cycle materials"
City, as a collective form of highly developed human, “its moving factors---especially human and their activities---and static elements are equally important.

Titanium alloys are commonly used for many aerospace and medical applications because of their properties like high strength to weight ratio, corrosion resistance and heat treatment capabilities.
But, due to the factors like low thermal conductivity and chemical reactivity with the cutting tool, it poses a challenge for the machining operations.
This observation can be explained by the fact that progressively increasing dynamic radii of the tool would affect the chip thickness and hence, the cutting forces.
At higher cutting speeds, the frequency of serrations increases (though size decreases) due to a combination of factors: adiabatic shear band formation, temperature rise, and discontinuous chip formation.
Talantov, Influence of the instability of chip formationand preheating of work on tool life in machining high temperature resistantsteel and titanium alloys, Mechanical Engineering Research Bulletin 9 (1986)52–62

In addition, TRIP steel also has excellent fatigue properties and high strain rate mechanical properties.
The plastic deformation resistance of the material is one of the key factors that directly affects the safe operation of equipment and insurance of the plastic deformation during thermal processing[2].
The deformation resistance is significantly affected by the deformation temperature.
Fig. 4 Effect of deformation rate on deformation resistance of the TRIP steel at different deformation temperature and deformation amount (a) =0.08 (b) =0.18 (c) =0.30 (d)=0.42 (e)=0.58 (f)=0.75 Effect of Deformation Amount on Deformation Resistance The deformation amount affects the deformation resistance significantly in several ways during the hot deformation processes: (1) At a given temperature, as the deformation amount increases, the strengthening will enhanced, resulting in an increase of the deformation resistance.
A Study on Macroscopic and Microscopic Mechanical Behavior of TRIP High Strength Steel for Vehicles.Graduate School of Hunan University,2010: 5-9

The research results showed that the strain limit and low cycle fatigue life were the two factors for service life.
The study of low cycle fatigue life under the influence of two factors includes: The first was the effect of strain amplitude on low cycle fatigue.
When plastic strain occurs before low cycle fatigue damage, such as creep, bending and formation factors, the fatigue state will change.
The service life of casing materials is affected by multi - factors under the service environment of thermal recovery wells.
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2018, 734: 20-26

The former is mainly restricted by the sheet shape thickness and down pressure, tensible force, velocity of working roller and forward slide and behind slide；the latter is mainly affected by the thickness error and hardened fluctuating，mill eccentricity, lubricate state, friction factor and tensible force fluctuating by rolling velocity change.
（3） In the equation， standing for the thickness fluctuating value of every surve segmens， standing for the thickness fluctuating value of every surve segmens mathematics model， standing for the thickness fluctuating ameding factor of VMT forecasting， standing for the thickness fluctuating warp factor of network forecasting every surve segments.
TRB takes on the preferable mechanical properties and is adapted the loading demand of many car-body parts，yet the deforming degree of each position exists asymmetry, it will lead the forming process complexity and control difficulty.
The system integration must think over the whole processes for the whole inferior to none ,the project must consider the factors of technique, yield efficiency and economy.
[8] Hui Gao, Gang Zheng, Guangyao Li: Chinese Journal of Mechanical Engineering, Vol.44(2008),p.102-105, in Chinese.

In this work, photoluminescent properties of Ru(bpy)32+ incorporated in cellulose nanofiber (CNF) film was investigated by comparing with those in polyvinyl alcohol (PVA) and polyacrylic acid (PAA) films.
The luminescence properties of Ru(bpy)32+ in CNF films were discussed based on the stabilization of excited state and the dispersibility of Ru(bpy)32+ in the films.
In the present work, Ru(bpy)32+, which is a well-known photosensitizer[5-6], was incorporated into the CNF film and the luminescence properties of Ru(bpy)32+ in CNF film were investigated in comparison with those in PVA and PAA films.
I = A1exp(-k1･t) + A2exp(-k2･t) + A3exp(-k3･t) + ･･･ (1) Where ki are rate constant of luminescence decay and A1 are pre-exponential factors which are proportional to the quantity of the decay components.
c Relative amplitude of pre-exponential factor.

The dynamic cutting force will change in the cutting process by a variety of factors, causing the change of relative position between the tool and workpiece, which in turn would affect the dynamic cutting force.
When the separable elliptic ultrasonic vibration is applied to the cutting process, the machining processes generate separation characteristics, variable cutting speed characteristics, variable cutting depth (thickness) properties, and variable cutting angles and reverse radial cutting force characteristics [3].
(10) Where (11) The essence of M（s）is introducing the impact of elliptical ultrasonic vibration on cutting process, which affects the transfer function of machining system by changing the cutting process.
The separable elliptic ultrasonic vibration cutting has separation characteristics, variable cutting speed characteristics, variable cutting depth (thickness) properties, and variable cutting angles and reverses radial cutting force characteristics.
Study on the mechanical property of the elliptic ultrasonic vibration cutting process.

The Design of Variable Frequency Constant Pressure of Gas Conveying Control System in Mechanical Engineering Yan Chen1,a, Yang Gao1,b ,Qing-qin Li (Corresponding Author)1,c 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500,China a551919395@qq.com, b969475461@qq.com, c154073620@qq.com Keywords: Frequency Control, Rotate Speed, Energy Consumption, Constant pressure air supply Abstract: Force fan is widely used in various industries.
To regulate the gas pressure by regulating valve opening degree is not conducive to energy saving, but also affect the service life of the equipment.
Introduction In the industry, the mechanical and electrical equipments which related fans accounted for about 60% of the amount of the electric motors, and the electrical energy consumption accounted for about 1/3 of total power generation[1]。
According to the theory of fluid mechanics[2]，we can draw the following formula: ; (1) is the wind pressure when the rotating speed is , Pa; is the wind pressure when the rotating speed is , Pa; is the capacity factor when the rotating speed is ,KW; is the capacity factor when the rotating speed is , KW; Its energy consumption is illustrated in figure 1.
Fan mechanical properties is the torque and the rotational speed quadratic is proportional to changes, the power dissipation and the three times speed of revolution proportional change[3].Used when the valve regulating valve opening, no matter how, motor always work at rated speed.

Rare Earth is made into antibacterial agent for the reason of its good antibacterial properties thus can be mixed into kinds of coating, which not only can remain original characteristics of coating, but also entrust it good antibacterial properties[3].
Meanwhile, La3+ which attached to the surfaces of ZnO also had strong antibacterial activities, several factors working together to improve the antibacterial properties of La3+/ZnO composite antibacterial agent[7-8].
Properties of La3+/ZnO Rare Earth composite antibacterial imitation porcelain paint.
The reason was that: on one hand composite antibacterial power improved mechanical properties of the coating, on the other hand there was a small size effect of composite antibacterial agent, it could cause impermeability[9] to form compact “coating”, decreased the surface tension of coatings[10], formed the interface with the performances of oil and water resistance, whose performances of water resistance and alkali resistance could be improved.
Conclusions (1) Rare Earth La3+/ZnO composite antibacterial agent was made by the combination Nano-ZnO and LaCl3 whose antibacterial properties were better than Nano-ZnO and Rare Earth LaCl3 themselves, that is, Nano-ZnO whose photocatalysis and antibacterial properties could be significantly improved by doping La3+, with the obvious coordination function