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Safety of the arch bridge will change when a suspender sudden failure, and affect the safety of the structure.
The relative length of the side suspender is short, to improve its displacement caused by the change of the adaptation load, temperature and other factors and avoid material fatigue and strength reduce of suspenders, Design uses HVMBDSQ7-73-type ball-hinge boom.
Dead loads+ live loads cases: The dead loads that affect the force of suspenders of arch bridges are mainly the self gravity of vertical and horizontal beams and secondary dead loads, the live loads that affect the force of suspenders are mainly vehicle load, impact load of vehicle and non-vehicle load.
[12] R.A.Collacott, Mechanical Fault Diagnosis and Condition Monitoring, London, 1997
[14] Malm.R,Andersson.A: The field testing and simulation of dynamic properties of a tied arch railway bridge.

Many factors may lead to noise, vibration and wear in practical applications, such as manufacture and assembly errors, gear and bearing failure, deformation of gears and shafts and so on, all will affect the transmission quality, reliability and service life of machines.
Referring to the references presented by Ren [7] and Fang et al. [10], the meshing stiffness K is a main coefficient affecting the gear meshing simulation result and can be derived according to the Hertzian nonlinear elastic contact theory as the following equation: (2) where, and are curvature radii of two meshing gears at the contact point respectively (Unit: mm), and are elastic modulus of the gear material for the pinion and the gear respectively (Unit: Pa), and is the poisson’s ratio.
Steel material properties using in the paper are listed in Table 2.
Ma, Simulation study on contact stress of gear tooth, Journal of Mechanical Transmission, 31 (2) (2007) 26-28
Chao, Multi-body contact dynamic modeling of gear transmission, Journal of Mechanical Transmission, 33 (1) (2009) 15-19

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China) (2.
Cutting speed affects surface integrity obviously more than other cutting parameters such as depth-of-cut, feed rate.
In this paper, the effects of cutting speed on the surface integrity of titanium alloy Ti-1023 including surface roughness, microstructure and microhardness in face milling are presented. 2 Experimental Procedures Ti-1023 is a near-β titanium alloy type, the nominal composition and physical properties of Ti-1023 are respectively given in Tab.1 and Tab. 2.
The micro hardness measurements repeated three times for each inspection point and the average values were finally adopted. 3 Results and discussions The results and discussions are concentrated on the workpiece surface integrity aspects on finish machining of titanium alloy Ti-1023. 3.1 Surface roughness The surface integrity can be quantified by many methods whereas surface roughness is one of the most widely used characterization methods, which is affected by many factors.
Although machined surface deteriorates, machined surface texture is affected and the surface roughness decreases yet.

Many of MEMS materials are used in thin-film form, and it is well known that thin-film properties can differ from bulk properties.
One of the key technologies to the material properties extraction of thin films through measuring the electric-circuit behavior is the simulation of electrical-mechanical coupling behavior of micro test structures.
where the coefficient η to be solved is the associated modal participation factor.
Through the C-V measurement and the material property extraction algorithms, one can obtain the material properties of the test microstructure.
The geometric and material properties of the test micro cantilever beams.

Materials and Methods Materials The parameters and properties of materials (MAT1 and MAT2) are shown in Table 1.
(a)Structual deformation vs load; (b) Frictional coefficient vs deformation Fig 7 Structure deformation (a)contact pressure for JIM1 and JIM2; (b) contact pressure vs. frictional coefficient; (c) contact pressure at center point Fig 8 Contact pressure distribution on joint interface For joint interface models, the contact pressure is affected by many factors such as material’s properties.
The properties of random surfaces of significances in their contact.
Research on model of static property of fixed joint surface.
Journal of mechanical engineering. 47 (2011), 53-58

In view of the above situation, the research group carried out the experimental study on this kind of abnormal nodes, researching its broken mechanism and influence factors, in order to build the seismic design scheme that is suited to the abnormal node and the restoring model of beam-and-column combination that contains this kind of node.
However, the experimental method considers only a small part of the effect of influencing factors, the calculation model built is quite complex, and all this will easily bring about personal factors and corresponding limitations; on the other hand, many difficulties in the analysis of the nonlinear finite element will be brought about by the uncertainty in the calculating constitutional relationship by the finite element method.
This paper make use of the relevant test data and additional data from previous test for building neural network model to predict shear bearing capacity of abnormal nodes of the reinforced concrete frame, to explore the applicability of neural network method in the study of the mechanical properties of concrete.
Considering of those factors influencing the shear bearing capacity in the process of building model in this experiment as many as possible, the error which caused by man-made assumptions and simplify is avoided when the model is built.
It provides a new scientific and practical method for earthquake resistant capability of abnormal nodes and research on mechanical properties with a high value in engineering application.

Excavation affect the sunken plaza on top of the subway tunnel has been operational control within the allowable range is essential, and understanding the effect of foundation reinforcement program, to acquire all the maximum displacement after the program has been built using the foundation reinforcement subway tunnel value, and the deformation characteristics of the tunnel is also particularly important[3].
Calculating parameters of the model When simulating calculation for a single, think of surrounding rock for a single, homogeneous continuum, Its physical and mechanical properties according to sunken plaza field engineering geological investigation report and test of the measured data and combined with the relevant specification to select, model of each soil parameter selection are shown in table 1.
Adopting the construction procedure of soil-cement mixing pile reinforcement measures and the scheme 1 are almost the same, the change is to apply the corresponding unit property change of reinforced soil properties.
Comprehensive use of soil-cement mixing pile of the door and uplift pile reinforcement plan and reinforcement measures and scheme 1 are almost the same, the change is: apply the corresponding unit property change of reinforced soil properties., apply the corresponding unit property change of equivalent conversion.
But in terms of the specific circumstances of this project, only take soil-cement mixing pile reinforcement scheme of door type, vertical displacement is still too large, the reason is that, the restriction because of the upper soil modulus increase is limited, the rebound deformation of below soil layer is the decisive factors affecting tunnel service value

However, despite these advantages, the mechanical properties and surface integrity of WAAM-fabricated parts can be enhanced to meet the stringent demands of critical applications. 316L stainless steel, a low-carbon variant of 316 stainless steel, is renowned for its exceptional corrosion resistance, excellent mechanical properties, and good weldability.
By exploring changes in surface roughness, mechanical properties, and bending fatigue strength, this study presents how severe shot peening can enhance the performance of WAAM components.
This can be attributed to factors such as heat dissipation.
This uniform hardness is typical of WAAM-produced components, where the slow cooling rates and relatively stable thermal gradients result in consistent mechanical properties across the part.
To optimize SSP-treated WAAM AISI 316L components for specific industrial applications, a systematic approach focusing on the material's mechanical properties, microstructural features, and surface characteristics is required.

Compared with the horizontal axis wind turbine, they have better mechanical properties, simpler structures and lower costs.
According to the aerodynamic theory, thickness and camber as airfoil geometric parameters, and blade pitch angle can affect airfoil aerodynamic characteristics, and further affect the whole wind turbine performance.
(8) Velocity inducing factor ɑ is defined as
(11) Inducting factor ɑ can be calculated and get an approximate solution.
In addition, airfoil thickness changes will affect the distribution of fluid field and the surface pressure coefficient of aerofoil ,and then influence wind energy using ratio[7].

Cell deformation and detachment depend largely on the cell and extra-cellular micro-environments/substrate mechanical properties [6].
This change in mechanical properties affects the cell shape and the receptor-ligand bonds between adjacent cells or cell-extracellular matrix.
The models also used prior measurements of cell height [22], ECM [45] and substrate [22] mechanical properties.
Mechanical and failure properties of single attached cells under compression.
Contribution of the nucleus to the mechanical properties of endothelial cells Journal of Biomechanics 2002; 35:177–187