Search results

Most of the researches about droplets focused on the factors which may affect the droplet formation and break-up process [5, 6].
The pressure of junction point is affected by the blocked dispersed flow and changes with the volume of the blocked flow.
The select two phase liquid and measured values of their properties are shown in Table 1.
It is well known that the flow behavior is greatly influenced by the wetting property of the fluid, and contact angle is reflected by the wetting degree.
Anna: Role of geometry and fluid properties in droplet and thread formation processes in planar flow focusing.

Particularly, we are concerned on how the homogenization technique affects the calculated forming-limit of materials exhibiting qualitative changes in crystallographic texture and hence, evolving anisotropically during the mechanical deformation.
In this sense, each grain is in turn considered to be an ellipsoidal inclusion surrounded by a homogeneous effective medium (HEM) that has the average properties of the polycrystal.
The properties of the HEM are not known in advance because they result from an average of the individual grain behaviors, once convergence is achieved.
In our case, the model is based on the assumption that each grain is surrounded by a homogeneous effective medium that has the average properties of the polycrystal.
We know that many factors influence forming-limit predictions through the M-K approach, the homogenization scheme being one of the most important.

A finite element method was developed to investigate the semi-rigid connection mechanical behaviors in the process of CFST structures progressive collapse, and different semi-rigid connection joint stiffness were taken into consideration and compared to rigid connection.
Introduction Progressive collapse means a disproportionate partial or whole scale structural collapse which triggered by a partial structural damage, progressive collapse may lead to a terribly casualties, it makes a potential threaten to personal and property safety.
Compare four different stiffness connection and use the fixity factor r to measure connection stiffness.
Additionally, corner column shares less restrains than side and inner column, as shown in Fig. 6, beam end moment was affected remarkably with the change of fixity factor.
Fig. 9 shows the relationship curves of vertical displacement of joints v.s. fixity factor and column removal scenario.

Delayed Fatigue of Hydroxy- and Fluorhydroxyapatite Ceramics in Simulated Body Fluid S.M.Barinov, I.V.Fadeeva, L.V.Fateeva, S.V.Tumanov Institute for Physical Chemistry of Ceramics RAS, Ozernaya 48, Moscow, 119361, Russia, email barinov_s@mail.ru Keywords: biomaterials, ceramics, hydroxyapatite, fluorhydroxyapatite, mechanical properties, dynamic fatigue, stress corrosion Abstract.
Fluoride substitutions up to 10% were demonstrated to influence positively the proliferation of osteoblast-like cells [4] and do not affect negatively the human blood proteins adsorption [5].
Besides, the better stability of fluorhydroxyapatite (FHA) in biological environments compared to HA can also be considered as a positive factor for orthopedic applications [6].
Mechanical testing was performed using an UTS-100 machine at three-point bending mode.

These structures will encounter severe complex loading conditions, which may be a combination of mechanical, aerodynamic, thermal and acoustic loads.
A rectangular Graphite-Epoxy plate of eight layers [0/40/-45/90]s is investigated in this paper, the material properties the of the plate are show in Table 1 Table 1.
Material properties of the composite materials plate 115 8.7 4.55 2.175 1430 0.22 30.1x10-6 A proportional damping ratio with is used.
From the Fig.1 which x axis stands for the displacement of middle point of the panel and the y axis means the full model load proportion factors, The influences of initial imperfection to plate's buckling behaviors are relatively smallest when the ratio of initial imperfection to the plate thickness equal to 50%.
This illustrate that the composite plate's buckling behaviors do not affected by just change the ratio of width to length.

When rotating machinery break down, it will not only affect the normal running of rotor system, but also lead to the serious accident such as shaft fracture in severe case, which causes the catastrophic damage to the whole rotating machinery system and enormous economic losses[1].
The dimension parameter values of all parts of rotor test bench are shown in table 1, and the material property parameter values of all parts of rotor test bench are shown in table 2.
Conclusions Taken rotor test bench as experimental platform, the finite element model of rotor-bearing-base system is built, the vibration characteristics of the base is gained with transient analysis of the model, and the relative factors which effect vibration characteristics of the base is investigated.
Zou: Journal of Mechanical Engineering Science.
Ma : Mechanical Engineer, Vol.03(2009), P.69-71

The stiffness characteristic caused by the vertical deformation of the leaf spring directly affects vehicle ride comfort, the integrity of the goods and the dynamic tire force[3].
Spring types and stiffness characteristics There are many nonlinear factors during the leaf spring’ actual working, such as large deformation, the contact between leafs and so on.
In recent decades, many scholars do some researches on the nonlinear mechanical model of the leaf spring.
Journal of Mechanical Engineering , 2007, 36:47-51 [7] Prem H, Rill G, Mclean J.
Measurement and Representation of the Mechanical Properties of Truck Leaf Springs.

Factors that affect moringa seed shelling were also examined and established for the development of the machine. 2.
Materials In the design of agricultural machines, it is important to establish relevant physical and mechanical properties of crops to be handled.
Many factors were considered to produce an efficient machine.
Cost of construction Significant physical and mechanical properties of moringa seeds were used for the machine design.
International Journal of Food Properties, 13 (2010b) 732–743

This assembly offers many advantages over mechanical riveting or fastening, including improved fatigue life behavior, reinitialized stiffness and strength, decreased corrosion initiated in components. [3] devoted an aluminum panel repaired with composite panels. they showed that the stress intensity factor does not increase indefinitely with the crack length for a cracked plate repaired, because it always reaches a limit. [4] devoted the fatigue behavior of notched 2024-T3 aluminum plates repaired with bonded glass / epoxy, boron / epoxy and epoxy / carbon patch. [5] Studies at different geometric shapes are used to hedge a wider damaged area.
The best of the repair depends on the bonding properties at once the adhesive-patch.
The SIF (stress intensity factor) is then reduced by the presence of the pellet.
Material properties of 2024-T3 Aluminum : Young modulus E = 72400MPa, Density ρ= 2770 Kg/m3, Poison ratio ν= 0.33.
The material selection also affects the physical and mechanical properties of the part produced.

Each of the processing steps starting from casting till the finishing operation influence the final mechanical, corrosion, and cosmetic properties.
However, in the commercial production, some of the processing steps maybe compromised to reduce costs without significantly affecting the final properties.
However, moving beyond a certain heating rate may negatively impact the final properties since the microstructural features might change significantly.
Variety of factors affect the formation and extent of PCG viz. extrusion ratio, container temperature, billet temperatures, die designs, cooling rate post extrusion and the microstructural features of billet [12,1,17,18].
[9] The double-edge effect of second-phase particles on the recrystallization behaviour and associated mechanical properties of metallic materials.