Gum Tragacanth Fibers from Astragalus gummifer Species: Effects of Influencing Factors on Mechanical Properties of Fibers

2007 ◽  
Vol 7 (19) ◽  
pp. 2861-2865 ◽  
Author(s):  
Ramin Khajavi ◽  
Seyed Hossein Mossav Pourgharbi ◽  
Amir Kiumarsi ◽  
Abosayeed Rashidi
Keyword(s):  
Mechanical Properties ◽  
Influencing Factors ◽  
Gum Tragacanth ◽  
Species Effects

scholarly journals Monte Carlo Simulation for Exploring Mechanical Properties of Porous Materials Based on Scaled Boundary Finite Element Method

2022 ◽  
Vol 12 (2) ◽  
pp. 575
Author(s):  
Guangying Liu ◽  
Ran Guo ◽  
Kuiyu Zhao ◽  
Runjie Wang
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Monte Carlo Simulation ◽  
Finite Element ◽  
Monte Carlo ◽  
Porous Materials ◽  
Influencing Factors ◽  
Random Models ◽  
Scaled Boundary Finite Element ◽  
Element Method

The existence of pores is a very common feature of nature and of human life, but the existence of pores will alter the mechanical properties of the material. Therefore, it is very important to study the impact of different influencing factors on the mechanical properties of porous materials and to use the law of change in mechanical properties of porous materials for our daily lives. The SBFEM (scaled boundary finite element method) method is used in this paper to calculate a large number of random models of porous materials derived from Matlab code. Multiple influencing factors can be present in these random models. Based on the Monte Carlo simulation, after a large number of model calculations were carried out, the results of the calculations were analyzed statistically in order to determine the variation law of the mechanical properties of porous materials. Moreover, this paper gives fitting formulas for the mechanical properties of different materials. This is very useful for researchers estimating the mechanical properties of porous materials in advance.

scholarly journals Experimental study on laminated bamboo lumber column

2018 ◽  
Vol 38 ◽  
pp. 02001 ◽  
Author(s):  
Chenwei Wang ◽  
Huizhong Zhang ◽  
Chenjie Zhao ◽  
Chenge Zhang ◽  
Tongwei Cao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Stress ◽  
Bearing Capacity ◽  
Influencing Factors ◽  
Ultimate Load ◽  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Standard Normal ◽  
Laminated Bamboo Lumber

This paper presents and discusses the experimental study on the mechanical properties of LBL column both under axial and eccentric compression. The results shows that the ultimate load for the eccentric compression specimens with the eccentricity values of 30 mm and 110 mm are 95.2 kN and 31.8 kN respectively. Eccentricity is one of the main influencing factors for the ultimate bearing capacity of the LBL columns. Because of the vulnerability of the mechanical connections or natural nodes to tensile stress and secondly, laminated bamboo is vulnerable to defects that has more detrimental influence on the tensile resistance of the material. The variation in strain for the laminated bamboo lumber column sections is linear throughout the loading process, following standard normal section bending theory which is similar as that for the beam.

Combustion Synthesis of Alumina-Based Multiphase Foam Ceramic

2008 ◽  
Vol 368-372 ◽  
pp. 1526-1528 ◽  
Author(s):  
Jun Shou Li ◽  
Liang Li ◽  
Jian Jiang Wang ◽  
Bing She Xu ◽  
Yu Jun Yin
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Combustion Synthesis ◽  
Influencing Factors ◽  
Direct Observation ◽  
Compression Strength ◽  
Pore Diameter ◽  
Foaming Agent ◽  
Temperature Resistance ◽  
Foam Ceramic

Al2O3-TiO-TiO2 multiphase foam ceramic was prepared with Al powders and TiO2 powders by combustion synthesis, Direct observation and metallographic microscope indicated that the pore diameter is 100~6000μm, and Archimedean method showed that the porosity is 35~50%. The influencing factors of the pore diameter and porosity and, the effects of adding SiO2 on compression strength of the Al2O3- TiO-TiO2 multiphase foam ceramic were discussed. It was shown that the addition of proper high temperature foaming agent can increase porosity and adding SiO2 can decrease porosity. The Al2O3-TiO-TiO2 multiphase foam ceramic has good mechanical properties and high-temperature resistance.

Performance Analysis of Bentonite-PVA Fiber Cement-Based Composites for Building Based on BP Neural Network

2020 ◽  
Vol 852 ◽  
pp. 209-219
Author(s):  
Zhe Shen
Keyword(s):  
Neural Network ◽  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Composite Materials ◽  
Influencing Factors ◽  
Bp Neural Network ◽  
Analysis Method ◽  
System Input ◽  
Prediction And Simulation ◽  
Pva Fiber

The paper will use BP neural network analysis method to study the thermal conductivity of bentonite and its influencing factors as a system. The heat conduction of bentonite was used as the output of the system, and its influencing factors were used as the system input to simulate. The corresponding simulation model was established to verify the thermal conductivity data. In addition, the analysis of the mechanical properties of the bentonite-PVA fiber cement-based composite materials for construction has not only laid a theoretical and realistic foundation for the prediction and simulation of the thermal conductivity of bentonite, but also has opened up the mechanical properties of the bentonite-PVA fiber cement-based composite materials a new path.

Study of the Effect of in-Line Induction Annealing on a Set of Mechanical Properties of TP2 Copper Tube

2011 ◽  
Vol 199-200 ◽  
pp. 1865-1869
Author(s):  
Hong Jin Zhao ◽  
Li Hong Peng ◽  
Cheng Mao ◽  
Zheng Bin Zhang
Keyword(s):  
Mechanical Properties ◽  
Influencing Factors ◽  
Environmental Temperature ◽  
External Factors ◽  
Copper Tube ◽  
Internal Factors ◽  
Induction Annealing ◽  
Tp2 Copper Tube

Four specifications TP2 copper tubes experienced in-line induction annealing test was studied, mechanical properties of the tubes and the influencing factors were analyzed. The results show that mechanical properties and microstructure of different positions are stable and homogeneous after in-line induction annealing. Mechanical properties of the specimens are not only related to internal factors, but also related to external factors such as environmental temperature.

scholarly journals Improvement of product drafting process in drafting devices of the spinning machines with the application of straps

2021 ◽  
Vol 2094 (4) ◽  
pp. 042079
Author(s):  
Rashit Nurboev ◽  
Murkosim Khudayberdiev Anvar Abdullaev ◽  
Okhun Sharofov ◽  
Olima Aripova
Keyword(s):  
Mechanical Properties ◽  
Service Life ◽  
Thin Layer ◽  
Influencing Factors ◽  
Cotton Fabrics ◽  
Thin Metal ◽  
Strength Characteristics ◽  
Design Parameters ◽  
Geometrical Parameters ◽  
Frame Element

Abstract This paper covers the analysis of operation drafting devices of the spinning machines, the technological requirements for the processes of product straightening, product drafting, straightening and parallelization of fibers and the basic theoretical prerequisites. The main geometrical parameters of design of drafting pairs, their interaction, influencing factors as the process of yarn formation after drafting, with the use of straps, are considered. Analysis of the operation of the existing design of drafting devices of technological machines of spinning production has the following disadvantages: low reliability and service life of rubber straps, insufficient strength characteristics and elastic-mechanical properties of the frame element made of technical cotton fabrics. It is necessary to select a pair of straps that meets all the requirements of conditional operation of a pair of straps as a frame element for the upper and lower straps made of thin-layer metal fabric made of metal thread, make adjustments to additional calculations of the design parameters of the drafting devices, taking into account the straps made with a thin metal fabric base.

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