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At present, there are many materials satisfying the requirements, such as pure graphite bipolar plate, injection bipolar plate, expanded graphite bipolar plate, composite bipolar plate and metallic bipolar plate.
ASYS/LS-DYNA is a general explicit nonlinear dynamic analysis of finite element program, and can simulate the real world of various complicated nonlinear (large displacement, several big change and large strain), material nonlinearity (140 kinds of materials) and dynamic simulation of nonlinear (50) contact.
Acknowledgment The authors would like to thank the National Science Foundation of China (Grant Number: 50975214) and the Wuhan Science & Technology Bureau (Grant Number: 201010621229) for funding this study.
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However, THF is hard to manufacture the hollow thin-walled parts which have big length-radius and complex cross-sectional, due to the bad filling property and thinner wall thickness of tube if the materials in axial of tube can not be supplied in time.
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Silicate-based luminescent materials have good chemical and thermal stability, simple synthesis process, low-cost raw materials and easy availability.
The samples are prepared by high temperature solid phase reaction method,, design formula according to chemical formula M0.955Al2–xGaxSi2O8 (M=Ca, Sr, Ba; x = 0~1.0), accurately weigh each raw material CaCO3(AR), SrCO3(AR) , BaCO3(AR), Ga2O3(99.99%), Al(OH)3(AR), H2SiO3(AR), Eu2O3(99.99%), add appropriate amount of flux H3BO3(GR), grind and mix thoroughly in an agate mortar Evenly, put it into a corundum crucible, and pre-fire for 2.5h in a muffle furnace at 1000°C in a weak reducing atmosphere.
Acknowledgements This work was supported by grants from Science and Technology Innovation Project of Nanjing Military Region (15MS050), the Key projects of the Department of Education of Anhui Province (KJ2016A893, KJ2019A0888), the quality engineering project of Anhui Education Department (2018mooc112), the Support Project for Outstanding Young talents in Colleges and Universities of Anhui Province(gxyq2018126, gxyq2021237), the scientific research project of Anhui Sanlian University (KJZD2021009, KJZD2018004, 2015Z001, 2013Z001).
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The objects’ textures, materials, location and angle in learning scene can be changed by the ordinary user.
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However composite materials relatively rarely used in additive technologies.
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Introduction With the development of modern science and technology, that the performance of the material has become increasingly higher requirements.
The continuous-fiber-reinforced CMCs and MMCs are ideal new structure materials that the materials has high temperature resistance, high strength, high toughness and corrosion resistance.In the aerospace field[3], the materials will have widely application prospect.
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By applying the sensing and measuring, computer signal processing, motor speed control, and smart material technologies, the system can achieve the tasks of automatic tension measure and the automatic control of the whole running process.
The magnetorheological fluid (MRF), acting as a kind of new intelligent material, has good control characteristics.
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