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Dynamics Analysis of Industrial Sewing Machine Frame Based on FEA and Modal Experiment Zhang LI1,a, Chen KAI1,b and Xue-jiao WANG1,c 1School of Material & Mechanical Engineering, Beijing Technology and Business University, Beijing, China azhangli@th.btbu.edu.cn, b522244@163.com, c1216235677@qq.com Keywords: FEA, Experimental Modal Analysis, industrial sewing machine frame.
The material parameters of the industrial sewing machine frame are shown in Table 1.
Table 1 The material parameters of the industrial sewing machine frame Material Density Elasticity modulus Poisson's ratio Steel 7850kg/m3 2 x 105GPa 0.25 Bakelite 1200kg/m3 1.9 x 103GPa 0.36 The meshed finite element model of the brandreth is shown as Fig. 2 and the panel is shown as Fig. 3 Fig. 2 The finite element model of the brandreth Fig. 3 The finite element model of the panel The Results of Finite Element Modal Analysis The first four set natural frequencies of the industrial sewing machine frame are obtained, which are shown as Table 2.
LMS Experimental modal analysis of compressor vibration isolation component for food refrigerating unit[J].journal of Beijing technology and business university(natural science edition), 2010, 28(6):36-41

Acknowledgements The work is supported by National Natural Science Foundation of China (41104009), and the Open Research Fund Program of the Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, China (Grant No. 11-01-04) and the Open Foundation of the Key Laboratory of Precise Engineering and Industry Surveying, National Administration of Surveying, Mapping and Geoinformation of China (Grant No.
New Non-iterative Solution of the Perspective 3-Point Problem, Journal of Computational Information Systems, v 8, n 9, 2012
Analytical Solution of Linear Intersection Based on Jacobi Algorithm and Its Comparison with Least Squares Solution, Applied Mechanics and Materials, Vols. 353-356, pp 3452-3455, 2013
New analytical approach to linear intersection and its application, Applied Mechanics and Materials, v 174-177, p 1962-1965, 2012

Starting material Resist coating Exposure Develop Etching Poly-si nanowires Fig. 1, Fabrication of poly- si nanowires using conventional photolithography.
[5] Robert Juhasz, Kai Kylmanen,Augustinas and Jan Linnros, Size-reduced silicon nanowires: Fabrication and electrical characterization, Elsevier, Material Science and Engineering ,pp 733-737, 2005
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Fabrication of High- Sensitivity Polycrystalline Silicon Nanowire Field Effect Transistor pH Sensor using conventional CMOS techmology.Japanese Journal of Applied Physics 50, Issue 4, (2011) pp.04DL05-04DL05-5

The moisture content wW takes into account the overall water in solid, liquid and vapour states contained in the pores of the materials.
Four fictitious materials are created changing the properties that influence the thermal and hygroscopic transient behaviour.
Given that the Glaser method model is steady state it produces the same moisture contents for materials with different heat capacities.
The Glaser method results are conservative during the year except for March and April, in which the moisture content is underestimated at most by 17% for the hygroscopic materials and at most by 5% for the non-hygroscopic materials.
Hagentoft, "Determination of liquid water transfer properties of porous building materials and development of numerical assessment methods: Introduction to the ec hamstad project" Journal of Thermal Envelope and Building Science, vol. 27, no. 4, pp. 253-260, 2004

Conditions to provide the maximum strength is 108 MPa for the 1000 rpm speed, a welding speed 100 mm / min Introduction An aluminum alloy with a friction stir (Friction Stir Welding: FSW) was developed in 1991, which is a solid-state materials.
For the materials that are difficult to weld by fusion welding (Conventional Fusion Welding) [1] which is a friction stir welding has been used effectively in the industry production of vehicles and vessels.
Materials and Design. 18: 269-273
Materials and Design. 29: 362-373
Journal of Materials Science. 40: 3669-3679

Acknowledgements The research was supported by Natural Science Youth Foundation of Heilongjiang Province (QC2010112), National Natural Science Foundation of China (51205095), National Natural Science Foundation of China (51075108), Key Project of Chinese Ministry of Education (209034) and Natural Science Foundation of Heilongjiang Province (E200919).
Journal of Mechanical Science and Technology. 22(4)(2008)708-713
Managing way of several typical machine tool noises, Journal of Jiamusi University. 17(2)(1997)130-132
[5] Sweden laborer protection fund knitting .Noise control principle and technology, China environmental science press, Beijing, 1991
Journal of Xiamen Radio Television University. 12(2)(2000).

The course of treat- mart was 12 weeks.After treatment,All the rats was killed,and the materials and blood was taken,and to detect biochemical test of liver function after eight weeks.
Materials and Methods Animal models.
Healthy Wistar female rats, weighing 230~280g were obtained from the Experimental Animal Center of Medical Science of Jilin University (Jilin, China).
Acknowledgment This study is supported by Project of Science and Technology Department of Jilin Province (No.201015241) References [1]Y.L, F.H, X.L.
Chinese Journal of Gerontology 2011;31(8):p,2902 [7] Z.H，L.H，L.J.

The lignocellulosic content of EFB makes it a potential source chemicals/materials(Table 2).
Materials and Methods In this study the efficiency of the process as a function of process parameters and quality of the products are analyzed.
Analysis for lignin content in raw materials and in pretreated sample were carried out according to the NREL Laboratory Analytical Procedure (Sluiter et al., 2008).
Journal of Applied Polymer Science, 66(5), 821–835. https://doi.org/10.1002/(sici)1097-4628(19971031)66:5<821::aid-app2>3.0.co;2-x [28].
Hydrolysis of lignocellulosic materials for ethanol production: A review.

., using the phase change materials (PCM) as a cooling medium in the hot side [9-12] while others used the nano-fluid as an additive material for the cooling medium [13-15]).
Table 1 Thermophysical and Electrical Properties of all Materials and Fluids used in the current study [4, 14, 17,18, and 19].
Thermoelectric cooler and thermoelectric generator devices: A review of present and potential applications, modeling and materials.
Modeling of enhanced micro-energy harvesting of thermal ambient fluctuations with metallic foams embedded in Phase Change Materials.
SSRN Electronic Journal 2022.

Article’s materials are based on estimated data, different Internet resources and information taken from Media.
The panels of facade system ‘Polialpan’ are one of such up-to-date materials.
Methods of calculating depreciation expenses of construction machinery (2012) Journal of Applied Engineering Science, № 1 (10), pp. 43‒48
Hydraulic methods for calculation of system of rear ventilated facades (2014) Applied Mechanics and Materials, Vols. 633‒634, pp. 1007‒1012
Comprehensive method of energy efficiency of residential house (2014) Advanced Materials Research, pp. 1570‒1577