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The objective of simulating bolted joints properties can be achieved through parameterized modeling method to simulate the 5 stiffness simultaneously.
Parameterized simulation and modeling for bolted joints The bolted joints stiffness factors in the rotor and stator system is mainly determined by the axial tension and compression stiffness.
This section has rationally simulated the bolted joints stiffness properties based on the mechanics characteristics of bolted joints structure in aero-engine system.
Firstly, the theoretical derivation has carried out to the mechanical properties of bolted joints based on the thin layer elements, and the equivalent parameters for different stiffness that need to simulate have been identified, which provides theoretical basis for parameterized modeling.
And then this paper explored to use the parameterized modeling method based on spring elements to simulate the bolted joints properties.

In 1987, Frost proposed a feedback mechanism, the "mechanostat," which controls bone mass in response to mechanical loading [4].
Osteocytes embedded in bone matrix play critical roles in sensing mechanical loads [9].
Osteoblastic cells receive stress information from osteocytes and produce soluble factors, such as insulin-like growth factor-I and bone morphogenetic proteins (BMPs), that respond to local stress and stimulate their-own bone-forming activity [10-12].
A structure that does not break under various biting conditions seems to be a very important property of the mandibular bone.
This method can also be used to simulate various bone disorders associated with deformation, thus providing us better understanding of the biomechanical background of such disorders. iBone will help us to determine the cause of bone diseases and to predict the risk of surgical therapy that may affect the mechanical property of bone tissues.

As these factors have uncertainty in boundaries, the fuzzy reliability optimization design considers the main factors which affect the design, carry on the abstraction of the mathematical model according to the design target, and can offer reasonable and practical reference value.
What’s more, the method takes into account the discrete and fuzzy of the main factors and constraints which affect the design in order to acquire a better synthetically result.
Design standards, manufacturing standards and material properties are the major sources of fuzziness of the fine-pitch tooth profile.
The factors, factor levels and their membership degree that affect the optimal level setλ* are shown in table 1.
Considering the various affecting factors during the gear design, the paper adopts the optimal level-cut-set method, which can not only decrease the calculation but also reflect the economy.

Dry weather and excess salt content are unfavorable factors to inhibit the growth of plants[1] .
Table 3 Factors and level list of the U12（12×43×34）homogeneous design Text No.
Comparing with these variables, local arbor had less influence with small correlation coefficient(-0.027), which indicated that although local arbor did affect the salt content with highest direct path coefficient, the interaction among various factors played a more important role.
The effect on soil salinity would be changed with the soil texture, physical structure of PHCB and other factors.
Vol.48, No.2 (2005), P.171-178 [2] Bowles, J.E: Engineering Properties of Soils and their Measurements.

Further more, the heat-release problem is also one of the key factors.
Packaging Materials Packaging (materials, technology, etc.) is also one of the key factors that affect the luminous efficiency.
Electric silver paste is a composite material adding the silver into epoxy resin, with good thermal and adhesives properties.
As a result of good thermal-conductivity, mechanical properties and electrical conductivity, added with the simple structure, nano-silver solder has become the developmental orientation of high-power LED 's bonding and package technology.
However, due to the high thermal conductivity, high insulation properties, strong mechanical properties, non-toxic, and having similar hardness as Al, AlN substrate has a broad prospect on the application as a high efficiency LED's packaging material.

Among the many factors that affect the measurement of shape signal, the error of strip edge is one of the important factors to be considered.
Within the shape measuring roller, two magneto-elastic transducers with similar properties are installed at symmetrical 180o.
Smooth Treatment of Transverse Shape Distribution For the transient measurement shape curve in real time, it is influenced by many factors and not continuous.
Chinese Journal of Mechanical Engineering, Vol. 44 No. 8 (2008), p. 137-142
Journal of Mechanical Engineering, Vol. 47 No. 12 (2011), p. 56-61

Most strength and fatigue properties available are in L-T orientation [1].
To understand the factors leading to crack branching in 7050-T7451, further experimental investigations are conducted and reported in this paper.
The mechanical properties are also available in [1], i.e. tensile Strength 510 MPa, yield strength 441MPa, elongation 9%, KIC values for thin plate (25-51 mm) L-T 31.9 MPa, T-L 27.5 MPa, S-L N/A and for thick plate (127-152 mm) L-T 26.4 MPa, T-L 24.2 MPa, S-L 23.1 MPa.
DK. da/dN was computed by incremental polynomial method, and the corresponding stress intensity factors were calculated using the expression recommended by ASTM E647 (2011).
The tests in this study show that (1) under CA loading conditions, the DK-levels that dominant the changing points of the da/dN~DK curve, see Fig.2, agree quite well with the result of Schubbe; (2) DK is not the only factor which affected the crack splitting, see Fig. 5, macro-noticeable crack splitting appears only in the high R ratio condition; (3) the tests under constant DK of R =0.5 indicates that R is not the only factor which affected the crack splitting either, see Fig. 6 and 4, remarkable macro-level crack splitting was not observed in the high R ratio test of DK= 15 MPa.

However, when it is exposed with fire at high temperatures, the mechanical and physical properties of concrete have changes certainly.
It depends on a number of factors such as the position of the structure and the internal force level of the structure, concrete type, aggregate type, etc., concrete spalling certainly occur.
Therefore, this is considered as one of the basic factors to be recognized to consider and evaluate the levels of damage to the structure after a fire.
Results and Discussions Engineering properties of the ternary-blended geopolymer are shown in Table 1.
Pham, Engineering properties of lightweight geopolymer synthesized from coal bottom ash and rice husk ash, AIP Conf.

Direct Adjustment Method The reducer base is adjusted base on the reference point of electromagnetic clutch, it is simple and convenient, but the result is affected by many uncertain factors, such as: A.
It has been affected by the deformation of clutch which lead to the end face jumpiness rate up to 0.6mm～0.8mm.
Because of the more weight clutches (up to 208 kg), the measuring and adjusting accuracy will be affected.
In Chinese [3] Chuhong Yan. the repairing technology about mechanical equipment Beijing: China Machine Press,2005.6.
In Chinese [4] The maintenance technology about mechanical equipment Beijing: China Machine Press,2008.9.

Besides, the bonding strength of interface between steel fiber and concrete is the main factor that affect the performance of asphalt concrete.
The analysis of the formation mechanism strength of steel fiber asphalt concrete Steel fiber asphalt mixture is a composite material composed of asphalt, aggregate,steel fiber,its strength is derived from the cohesive force and the friction of the aggregate and the pulling force of asphalt fiber.For ordinary asphalt concrete,the mechanical properties of the mixture is mainly borne by the asphalt and aggregate,in the case of tension the tensile properties of asphalt and aggregates are small,it will sudden destruction if beyond the tolerance range.But for steel fiber asphalt mixture,the tensile stress can undertake by asphalt, aggregate and steel fiber.When asphalt tensile damage,it can also rely on the cohesive force between the fiber and asphalt to pass tensile steel fiber.Because the destruction of the ordinary steel fiber reinforced concrete is mainly due to steel fiber’s pull out not by pull off,so the tensile strength of steel fiber can satisfy the use requirement in general while
its bond strength with concrete substrate interface is the main factor affecting the performance of steel fiber reinforced concrete.So the steel fiber reinforced concrete can alleviate the cracking of concrete and increase its service life.
[4] LI Wenying ,HAN Liu, GUAN Ningfeng, study of fiber affect on the properties of asphalt concrete[J].Liao ning Science and Technology of Communication, 2004(2): 14-16
[5] JIANG Jian ,PAN Hongyang,WANG Bing .Study on the anti-seismic properties of fiber reinforcement asphalt concrete[J].China and Foreign Hinghway , 2004 , 24(5) :111-112