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Online since: May 2012
Authors: Ling Li Meng, Yan Qun Huang, Bin Zhao, Hai Long Zhou, Can Wang, Hong Guang Ma
Model Analysis for the Key component of carriage hoists
Bin Zhao1, a, HaiLong Zhou1,a , Can Wang1,a , LingLi Meng2,b, HongGuang Ma3,c and YanQun Huang2,b
1Jiangsu Xuzhou Construction Machinery Research Institute, Jiangsu, 221004, China
2 School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China
3 Offshore Oil Engineering Co., Ltd., Tianjin 300452,China
a zhaobin@xcmg.com, byanq.huang@gmail.com, cmahg@mail.cooec.com.cn
Keywords: Modal analysis; FEM; Natural frequency; Vibration model
Abstract.
The base material is Q235B and its physical parameters can be obtained in literature [2].
In engineering practice, the modal analysis technology is widely used in evaluating dynamic behavior of the structural system[2].
Huang: Material engineering dictionary in China.
Wang: Ansys engineering structure case analysis (Chemical industry press, China, 2007)
The base material is Q235B and its physical parameters can be obtained in literature [2].
In engineering practice, the modal analysis technology is widely used in evaluating dynamic behavior of the structural system[2].
Huang: Material engineering dictionary in China.
Wang: Ansys engineering structure case analysis (Chemical industry press, China, 2007)
Online since: July 2021
Authors: Jiří Zach, Jan Bubeník
Hygrothermal Behaviour of Inorganic Binder-Based Board Materials
Jan Bubeník1,a*, Jiří Zach2,b
1,2Brno University of Technology, Faculty of Civil Engineering, Centre AdMaS,
Purkyňova 139, 612 00 Brno, Czech Republic
abubenik.j@fce.vutbr.cz, bzach.j@fce.vutbr.cz
Keywords: Inorganic binder, cement, gypsum, board materials
Abstract.
There are some key problems with wood-based materials that complicate their use in the construction industry, such as hygroscopicity, inhomogeneity, anisotropy and flammability (reaction to fire in class F).
Commercially available board materials based on inorganic binders of comparable thickness (15 mm) were used to determine key properties.
References [1] Christian Brischke, Rolf Bayerbach & Andreas Otto Rapp (2006) Decay-influencing factors: A basis for service life prediction of wood and wood-based products, Wood Material Science & Engineering, 1:3-4, 91-107 [2] TIME, Berit, Hygroscopic moisture transport in wood, PhD Thesis, Norwegian University of Science and Technology, Department of Building and Construction Engineering, Norway, 1998, 216 s., ISBN: 8247102137
Diffusion of water vapour, monitoring and risk analysis of wooden walls, Brno University of Technology, Faculty of Civil Engineering, Czech Republic, 2014, http://www.woodresearch.sk/wr/201403/06.pdf
There are some key problems with wood-based materials that complicate their use in the construction industry, such as hygroscopicity, inhomogeneity, anisotropy and flammability (reaction to fire in class F).
Commercially available board materials based on inorganic binders of comparable thickness (15 mm) were used to determine key properties.
References [1] Christian Brischke, Rolf Bayerbach & Andreas Otto Rapp (2006) Decay-influencing factors: A basis for service life prediction of wood and wood-based products, Wood Material Science & Engineering, 1:3-4, 91-107 [2] TIME, Berit, Hygroscopic moisture transport in wood, PhD Thesis, Norwegian University of Science and Technology, Department of Building and Construction Engineering, Norway, 1998, 216 s., ISBN: 8247102137
Diffusion of water vapour, monitoring and risk analysis of wooden walls, Brno University of Technology, Faculty of Civil Engineering, Czech Republic, 2014, http://www.woodresearch.sk/wr/201403/06.pdf
Online since: September 2013
Authors: J.X. Xue, L.L. An, Q.P. Sun
Grinding Technology for Engineering Ceramics—A Review
J.X.
Electrolytic In-process Dressing (ELID) Grinding of Engineering Ceramics In grinding of engineering ceramics, high material remove rate is necessary for high efficiency.
Ductile Regime Grinding of Engineering Ceramics The ductile regime grinding hypothesis of Bifano et al. [30] states that all brittle materials will undergo plastic flow rather than fracture if the depth of machining is small enough.
Cai: Key Engineering Materials. 259-260(2004) 244–248 [20] Z.B.
Zhu: Key Engineering Materials.304-305(2006) 171–175 抱歉,系统响应超时,请稍后再试 · 支持中英、中日在线互译 · 支持网页翻译,在输入框输入网页地址即可 · 提供一键清空、复制功能、支持双语对照查看,使您体验更加流畅
Electrolytic In-process Dressing (ELID) Grinding of Engineering Ceramics In grinding of engineering ceramics, high material remove rate is necessary for high efficiency.
Ductile Regime Grinding of Engineering Ceramics The ductile regime grinding hypothesis of Bifano et al. [30] states that all brittle materials will undergo plastic flow rather than fracture if the depth of machining is small enough.
Cai: Key Engineering Materials. 259-260(2004) 244–248 [20] Z.B.
Zhu: Key Engineering Materials.304-305(2006) 171–175 抱歉,系统响应超时,请稍后再试 · 支持中英、中日在线互译 · 支持网页翻译,在输入框输入网页地址即可 · 提供一键清空、复制功能、支持双语对照查看,使您体验更加流畅
Online since: July 2011
Authors: Wei Ping Zhang, Peng Cheng Chi, Wen Yuan Chen, Hong Yi Li, Kun Meng
Advanced engineering technologies available for applications such as the micro-electro-mechanical system (MEMS) technologies are used.
And artificial insect wings and thoraxs with different materials by MEMS Technology are fabricated and analyzed.
Flapping-wing MAVs have very high demands on the materials which must have the light weight, high tensile strength and so on.
Structural materials we selected are commonly used in MEMS, mainly SU-8, Titanium alloy, Parylene-C and so on.
These materials are commonly used in the MEMS field, and through simple process, they can be assembled in the microrobot insect.
And artificial insect wings and thoraxs with different materials by MEMS Technology are fabricated and analyzed.
Flapping-wing MAVs have very high demands on the materials which must have the light weight, high tensile strength and so on.
Structural materials we selected are commonly used in MEMS, mainly SU-8, Titanium alloy, Parylene-C and so on.
These materials are commonly used in the MEMS field, and through simple process, they can be assembled in the microrobot insect.
Online since: June 2014
Authors: Yun Xin Chen
Constructing a new mode of teaching demonstration center of experimental teaching of mechanics of materials
Chen Yun-xin
School of Electromechanical &Architectural Engineering,Jianghan University,Wuhan, 430056, China
2098558413@qq.com
Keywords:Mechanics of materials; integration; three levels; experimental teaching
Abstract:By constructing a new mode of "integration of material mechanics teaching demonstration center, three levels of" experimental teaching, teaching content and teaching mode reform and innovation of the traditional, improve experiment teaching on cultivating the students' experimental ability, scientific thinking and methods, the innovation consciousness and ability in position; to be promoting one of the basic forms of teaching quality education.
Introduction Mechanics of materials is a science based on experiment, "experimental" teaching occupies a special position in the whole education in mechanics of materials in the teaching process, for the coordinated development of students' knowledge, ability, thinking and quality plays a vital role.
Therefore, in order to "cultivate ability, improve quality" as the main line, to cultivate innovative talents in the new century and application type talents in the new century as the goal, to update the contents of experiment teaching, according to the requirements of teaching organization integration, multi-level, opening the laboratory resources reorganization, purchase as the focus, to improve teachers is the key to effective and reasonable, "experimental teaching management system and performance evaluation system" for the practice teaching system security is the core of the problem need to break through the current experiment teaching reform of Higher School of mechanics of materials, is the key institutions of higher education and teaching reform of mechanical engineering. [3] The specific content the reform of mechanics of material experiment teaching system about " integration, the three level" 1 To Scientific Outlook on Development recombinant experiment teaching contents
Summary The practice of the reform of experimental teaching system and mechanical "integration, the three level" material in the course of the experiment of material mechanics of material forming and control engineering classes in our school on, and achieved very good results, the students learning enthusiasm is particularly high, the final average grades are excellent, the ability to analyze and solve problems has been greatly to improve the.
Mechanics of materials [M].
Introduction Mechanics of materials is a science based on experiment, "experimental" teaching occupies a special position in the whole education in mechanics of materials in the teaching process, for the coordinated development of students' knowledge, ability, thinking and quality plays a vital role.
Therefore, in order to "cultivate ability, improve quality" as the main line, to cultivate innovative talents in the new century and application type talents in the new century as the goal, to update the contents of experiment teaching, according to the requirements of teaching organization integration, multi-level, opening the laboratory resources reorganization, purchase as the focus, to improve teachers is the key to effective and reasonable, "experimental teaching management system and performance evaluation system" for the practice teaching system security is the core of the problem need to break through the current experiment teaching reform of Higher School of mechanics of materials, is the key institutions of higher education and teaching reform of mechanical engineering. [3] The specific content the reform of mechanics of material experiment teaching system about " integration, the three level" 1 To Scientific Outlook on Development recombinant experiment teaching contents
Summary The practice of the reform of experimental teaching system and mechanical "integration, the three level" material in the course of the experiment of material mechanics of material forming and control engineering classes in our school on, and achieved very good results, the students learning enthusiasm is particularly high, the final average grades are excellent, the ability to analyze and solve problems has been greatly to improve the.
Mechanics of materials [M].
Online since: May 2014
Authors: Jie Wu, Li Liu, Zai Xing Jiang, Bo Jiang, Zhen Hu, Jie Hui Jing, Yu Dong Huang
Huang1,a
1School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment Department of Applied Chemistry, Harbin Institute of Technology, China
2Heilongjiang University of Science and Technology, China
aydhuang.hit1@aliyun.com, b35692106@qq.com
Keywords: Coatings, Print quality, Inkjet material
Abstract.
Different thickness of inkjet materials was prepared.
The basic structure of inkjet materials.
Thickness versus print quality of inkjet materials Conclusions Inkjet materials contained a coating was designed and fabricated.
Calvert, Inkjet printing for materials and devices, Chem.
Different thickness of inkjet materials was prepared.
The basic structure of inkjet materials.
Thickness versus print quality of inkjet materials Conclusions Inkjet materials contained a coating was designed and fabricated.
Calvert, Inkjet printing for materials and devices, Chem.
Online since: August 2015
Authors: Dmytro Babich, Olexander Bezverkhyi, Tatiana Dorodnykh
Continuum Model of Deformation of Piezoelectric Materials with Cracks
D.
The key point of this approach is to determine the densities of the released elastic and electric energy.
The key point of this approach to the construction of the constitutive equations of state for fractured electroelastic materials is to determine the densities of the released elastic and electric energy.
Babich Simulation of Coupled Processes of Deformation and Cracking in Elastic Brittle Materials // Strength of Materials. – 2004. – 36, N 2. – pp. 178 – 184
Babich, A statistical strength criterion for brittle materials, Strength of Materials, Vol. 43, No 5, 2011, pp. 573-582
The key point of this approach is to determine the densities of the released elastic and electric energy.
The key point of this approach to the construction of the constitutive equations of state for fractured electroelastic materials is to determine the densities of the released elastic and electric energy.
Babich Simulation of Coupled Processes of Deformation and Cracking in Elastic Brittle Materials // Strength of Materials. – 2004. – 36, N 2. – pp. 178 – 184
Babich, A statistical strength criterion for brittle materials, Strength of Materials, Vol. 43, No 5, 2011, pp. 573-582
Overview of Key R&D Activities for the Development of High-Performance Magnesium Materials in Canada
Online since: July 2005
Authors: Jennifer Jackman, Jeffrey Wood, Mahi Sahoo, Su Xu, Jim Thomson, Elhachmi Essadiqi, Wei Jie Liu, Jason Lo
Overview of Key R&D Activities for the Development of
High-Performance Magnesium Materials in Canada
Jennifer A.
Jackman 1,a, Jeffrey Wood 2,b, Elhachmi Essadiqi1,c , Jason Lo 1,d , Mahi Sahoo 1,e , Su Xu 1,f, Jim Thomson 1,g and Weijie Liu 1,h 1 CANMET Materials Technology Laboratory, Natural Resources Canada, 568 Booth Street, Ottawa, Canada K1A 0G1 2 Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9 a jjackman@NRCan.gc.ca, bjwood@fes.engga.uwo.ca, cessadiqi@NRCan.gc.ca, d jlo@NRCan.gc.ca, emsahoo@NRCan.gc.ca, fsxu@NRCan.gc.ca, , hwliu@NRCan.gc.ca Keywords: high-pressure die casting, low-pressure die casting, lost foam casting, sand casting, Mg sheet, thermomechanical processing, wrought Mg, metal matrix composites Abstract.
The research work described is funded primarily through two federal programs: the Canadian Lightweight Materials Research Initiative, and the Materials and Manufacturing Theme of the AUTO21 Network of Centres of Excellence.
The metallurgical research facilities at the CANMET Materials Technology Laboratory are featured.
Emerging markets for Mg products in the automotive industry have driven research on the development of materials specialized to meet the demanding cost and engineering performance requirements of that industry.
Jackman 1,a, Jeffrey Wood 2,b, Elhachmi Essadiqi1,c , Jason Lo 1,d , Mahi Sahoo 1,e , Su Xu 1,f, Jim Thomson 1,g and Weijie Liu 1,h 1 CANMET Materials Technology Laboratory, Natural Resources Canada, 568 Booth Street, Ottawa, Canada K1A 0G1 2 Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9 a jjackman@NRCan.gc.ca, bjwood@fes.engga.uwo.ca, cessadiqi@NRCan.gc.ca, d jlo@NRCan.gc.ca, emsahoo@NRCan.gc.ca, fsxu@NRCan.gc.ca, , hwliu@NRCan.gc.ca Keywords: high-pressure die casting, low-pressure die casting, lost foam casting, sand casting, Mg sheet, thermomechanical processing, wrought Mg, metal matrix composites Abstract.
The research work described is funded primarily through two federal programs: the Canadian Lightweight Materials Research Initiative, and the Materials and Manufacturing Theme of the AUTO21 Network of Centres of Excellence.
The metallurgical research facilities at the CANMET Materials Technology Laboratory are featured.
Emerging markets for Mg products in the automotive industry have driven research on the development of materials specialized to meet the demanding cost and engineering performance requirements of that industry.
Online since: January 2013
Authors: Ting Chun Shi, Xiu Yan Yue, Xiao An, Wen Xiang Zheng
Finally, it evolved into utilizing semiconductor materials to produce vibration pulse wave.
But the research is so poor [17] in these fields, such as the relationship of cells and scaffold materials, the affection of cells on the degradation of materials, the affection of materials on stem cells differentiation and the formation of the organization and so on.
PGA, PLA, PLGA are synthetic materials.
There are two key problems [16] in the successful formation of the tissue engineering cartilage.
The research progress of the materials of cartilage tissue engineering scaffolds[J].
But the research is so poor [17] in these fields, such as the relationship of cells and scaffold materials, the affection of cells on the degradation of materials, the affection of materials on stem cells differentiation and the formation of the organization and so on.
PGA, PLA, PLGA are synthetic materials.
There are two key problems [16] in the successful formation of the tissue engineering cartilage.
The research progress of the materials of cartilage tissue engineering scaffolds[J].
Online since: October 2014
Authors: Hong Yuan Li, Meng Xuan He
The Study on Key Factors of Soil Seed Bank in Vegetation Restoration
Mengxuan He1,a,Hongyuan Li1,b
1College of Environmental Science and Engineering,Nankai University,Tianjin 300071,China
ahemengxuannku@126.com, beialee@nankai.edu.cn
Keywords:soil seed bank; vegetation restoration; orthogonal test
Abstract: The soil seed bank (SSB)is regarded as “potential genetic pool” of ground vegetation, which has functions of recalling vegetation history.In practical vegetation restoration engineering,the transplantation of alien species is the most popular method,which will influence the stability of ecological system.The soil seed bank has the advantage ofnatural regeneration,so it will become new afforestation materials.In order to enhance the feasibility of engineering application, orthogonal tests were set with three factors (the top soil thickness, the covering thickness and the number of adding seeds) and three levels.The results showed that:1) compared with blank tests,the orthogonal
At present, researches of SSB mainly focus on basic researches (composition, density and community structure,et al),researches on factorsof engineering application are very rare[5].The most typical example was the experiment carried out by Liu Meizhen in HunShanDaKe Desert,the study found that in the late restoration period, the diversity of natural reserves was higher than artificial lands.
According to the above, orthogonal tests with three three factors and three levels were set.The purpose of the study was to explore low-cost restoration method,giving constructive introduction of ecological application engineering[6].
Materials and methods Brief introduction of sampling sites Wuqing Low Carbon Park is lacated in Yixian Industrial Park(39°24′16″N, 117°01′32″E).The southwest side is water area, the rest of the park is land area.Arbors in this park are mainly common native species,such as Ulmus pumila, Ailanthus altissima, Tamarix chinensisand so on.The coverage of arbors was 20%;Shurbs are mainly Lespedeza davurica, Amorpha fruticosa.The coverage was10%.The herbaceous plants are mainly Setaria viridis, Scirpus planiculmis, Viola philippica, Taraxacum mongolicum.The species richness and quantity ofherbaceous plants are higher than arbors and shurbs.
This is the main reason to add arbor seeds in the restoration engineering.
At present, researches of SSB mainly focus on basic researches (composition, density and community structure,et al),researches on factorsof engineering application are very rare[5].The most typical example was the experiment carried out by Liu Meizhen in HunShanDaKe Desert,the study found that in the late restoration period, the diversity of natural reserves was higher than artificial lands.
According to the above, orthogonal tests with three three factors and three levels were set.The purpose of the study was to explore low-cost restoration method,giving constructive introduction of ecological application engineering[6].
Materials and methods Brief introduction of sampling sites Wuqing Low Carbon Park is lacated in Yixian Industrial Park(39°24′16″N, 117°01′32″E).The southwest side is water area, the rest of the park is land area.Arbors in this park are mainly common native species,such as Ulmus pumila, Ailanthus altissima, Tamarix chinensisand so on.The coverage of arbors was 20%;Shurbs are mainly Lespedeza davurica, Amorpha fruticosa.The coverage was10%.The herbaceous plants are mainly Setaria viridis, Scirpus planiculmis, Viola philippica, Taraxacum mongolicum.The species richness and quantity ofherbaceous plants are higher than arbors and shurbs.
This is the main reason to add arbor seeds in the restoration engineering.