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The main characteristic of the HBU is the possibility of a detailed control of pressurisation pi and blank holder pressure pbh during the process time in order to achieve an optimal use of the formability of the material and for realising beneficial workpiece properties.
For the investigations on the material flow during the forming process as well as on the workpiece properties, a specific die has been designed which contains an idealised die geometry.
Experimental setup for measuring the flange draw-in In experimental investigations the influence of the macroscopic surface structure on the material flow and the workpiece properties have been determined.
HBU forming experiment In the experimental investigations on the flange draw-in during the HBU forming operation and the workpiece properties, the mild steel alloy DC04 (1.0338) with a thickness of s0 = 1.0 mm has been used as sheet material.
Yamamiya, Kudo, H.: Investigation of Factors Affecting the Coefficient of Friction and Surface Properties with a Sheet Drawing Test.

Nevertheless, critical disturbance challenge arises in a circumstance where the fault affected generating unit’s capacity exceeds the maximum acceptable power loss.
Control Implementation The mechanical loop which creates the virtual mechanical prime mover output is shown in the Figure 3.
Mechanical loop for the two methods The swing equation represents inertia and damping properties in a mechanical prime mover and synchronous generator in which inverter virtual inertia control is emulated as in equation 1 [5], [13], [20]
Simulation Results A 10 kW grid interactive inverter is used in this simulation with 0.89 power factor.
Beck, “Dynamic Properties of the Virtual Synchronous Machine (VISMA)

In the direct promotion of the above factors, the "Undergraduate Engineering Graphics Teaching Basic Requirements " formulated by National Mapping Teaching Steering Committee in 2005 clearly required the students to get the basic operation skills in three-dimensional computer modeling [3].
Stand-alone teaching’s characters are that after finishing the traditional mechanical drawing course, we set up a separate three-dimensional modeling course independently.
Sectional teaching’s characters are that the student can learn mechanical drawing and then 3D modeling in sequence or parallel.
In the basic knowledge teaching of drawing, the initial setting and graphics properties are explained by Graphics Software.
For example, we ask students to conceive designing a simple mechanical and electrical product and divide into groups.

Introduction Softening of soft rock in deep mine with water exist is one of main factors for deforming too much or collapse of roadway surrounding rock .the deeper the mining depth is, the more complex the structure of surrounding rock is.
The porosity is the important of physical properties parameter in the rock.
The structure characteristic of the porosity mostly affects the water absorbing characteristic of the rock.
The results show that[10]when the porosity structure has the fractal characteristic, the formula (S) of the has been obtained the cumulative volume frequency ,which is less than pore Table 1 Basic Mechanical properties and characteristics of rock samples serial number rock characteristic buried depth dry density rate of pore saturated absorbing rate water [m] [g. cm-3] [%] [%] Rock samples characteristic S-1 fine sandstones 530 2.38 9.21 19.87 Oxford, structure more density, un-bedding S-2 coarse sandstones 600 2.33 11.70 22.32 off white ,structure more loose, un-bedding S-3 coarse sandstones 430 2.35 10.60 20.45
Based on the result of the fractal geometry formula curve fitting, it showed that: the sandstone sample porosity structure has multiple factor characteristic.

Introduction Silicon carbide (SiC) possessed potential and promising material for its outstanding properties: low density, low coefficient of thermal expansion, excellent chemical stability at high temperature, good mechanical behavior and resistance to oxidation, so it has extensive application in aerospace, microelectronics, nuclear energy and other advanced fields.
The process to produce CVD-SiC coating is quite complex, because there are a large number of factors to consider, such as reaction temperature, system pressure, composition of raw materials and the design of reactor.
Above all, the increase of β favored the formation of solid SiC and inhibits the production of SiC and Si, which was the key factor for the preparation of SiC coating with high purity.
In addition the equilibrium compositions were less affected by system pressure compared with reaction temperature and the composition of raw materials.
Properties and radiation effects in high-temperature pyrolyzed PIP-SiC/SiC.

In this paper, the energy absorption properties of 600 MPa and 800MPa grade TRIP and DP steels under different strain rates were investigated.
However, the energy absorption properties of DP steel were not the case.
TRIP steels with great mechanical properties of high tensile strength, ductility and energy absorption capacity are ideal for use as crash-relevant parts.
In this paper, the energy absorption properties of the 600 MPa Steel and 800 MPa cold-rolled steel ranges in different strain-rate from 1×10-3 to 6×102 s-1were investigated. 1 Experimental Materials and Methods.
De Cooman: Structure-properties relationship in TRIP steels containing carbide-free bainite, Current opinion in solid state and materials science, 8(3), 285(2004)

Experimental Research on Embankment Hidden Defects Monitoring Using Distributed Optical Fiber Sensor Yang Zhou 1,2,a, Pingyu Zhu 3,b, Shuyu Li 2,c 1 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing210098, China 2 Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China 3 School of Mechanical and Electric Engineering ,Guangzhou University ,Guangzhou 51006，China achou.young@gmail.com bzhu.pingyu@gmail.comc hhulsy@163.com Keywords: Distributed optical fiber sensor, embankment dam, hidden defect, bending radius, experimental study.
Introduction During the running period, hidden defects of embankment, such as seepage, crack and cave, are formed by human, natural and biological factors.
In the practical application of the optical fiber, fiber properties are directly related to the layout scheme.
Because fiber’s strain, temperature sensing characteristics and bending radius affect the sensing characteristics, so it is necessary to calibrate the influence through test before construction

Collagen, otherwise, comprises 90% of the organic matrix in the bones and together with the mineral (HA), governs the biomechanical properties and functional integrity of this tissue [2] Some biological materials, like collagen and biopolymers are found to exhibit the polar uniaxial orientation of molecular dipoles in their structure and can be considered as bioelectret.
This preferential deposition is attributed to the piezoelectric effect generated by the application of a mechanical deformation in the collagen, causing the dipoles in collagen fibers to reorganize tending to increment of negative charges in the compression zone, favouring the nucleation and later the crystallization of the HA.
The effect of the piezoelectricity seems to affect at a great extent the cellular adhesion on the different faces, in particular the one subjected to compression (fig 2B).
Nevertheless ongoing studies should to be taken in order to evaluate the expression of factors and proteins of the bone cells and thus to be able to interpret in detail the mechanisms responsible of this cellular behavior.

The foundation reaction force not only relate to the dimension, rigidity, elastic modulus, load size and distribution and other factors of sluice base plate, but also highly affect the deformation characteristics of foundation.
Physical and Mechanical Properties of Soil No.

The reason is that the concrete itself is a kind of fragile cellular material; before and after concrete solidification, many holes will be left in concrete and the micro-cracks of different degree will happen; under service environment and load function, such kind of micro-cracks will be further expanded and become the chief culprit which affects the structure safety or appearance of concrete.
This kind of cracks are called plastic cracks, also called drying shrinkage cracks, and they generally appear within 1~24h after pouring, and their appearance time is influenced by ambient temperature and humidity, air flow velocity, and other factors.
Raw materials, mixing ratio, and experimental method 1.1 Raw materials Cement: Tianshan 32.5-level ordinary Portland cement; its basic mechanical property can be seen in Table 1; Sand: river sand; it belongs to medium sand, with a silt content of less than 3%; Mixing water: tap water; Fiber: Ocean power type 2002 polyacrylonitrile fiber, with a specification ofΦ12.7μm×6mm; the specific performance parameters can be seen in Table 2.
Conclusion (1) After the polyacrylonitrile fiber is mixed into mortar, it can obviously improve cohesiveness and water-retaining property of mortar and cause no bad influence on other performance of newly mixed mortar