Numerical Study on Mechanical Properties of Quasi-Continuous SiCp/Al Network Composites with Various Particle Size Ratios (PSRs)

2019 ◽  
Vol 11 (07) ◽  
pp. 1950065 ◽  
Author(s):  
Xiang Gao ◽  
Xuexi Zhang ◽  
Aibin Li
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Yield Strength ◽  
Network Architecture ◽  
Numerical Study ◽  
Reinforcement Particle ◽  
Load Direction ◽  
Network Parameter ◽  
Element Analysis ◽  
Premature Failure

Recent works verified that network reinforcement design enhanced the modulus and strength of discontinuously reinforced metal–matrix composites (MMCs). The particle size ratio (PSR), i.e., the ratio of matrix to reinforcement particle diameters, defines the particle clustering degree and is an important network parameter. The effects of PSR on the mechanical properties of network SiCp/Al composites were studied via finite element analysis. The results showed that the composites with PSR [Formula: see text]:1 exhibited similar mechanical property. In contrast, composites with PSR [Formula: see text]:1 showed enhanced modulus (87.5–89.5[Formula: see text]GPa) and yield strength (303–315[Formula: see text]MPa) over homogeneous composites (modulus 75.9[Formula: see text]GPa and yield strength 299[Formula: see text]MPa). The enhanced mechanical properties were attributed to the higher load-bearing capacity of the reinforcement walls parallel to the load direction (PaW). However, premature failure and thus reduced elongation occurred with PSR [Formula: see text]:1 because network layers perpendicular to the load direction (PeW) acted as crack propagation paths. So, a threshold PSR of 7:1–8:1 was proposed for effective network design. The sacrifice of elongation needs to be solved for optimized network architecture designs.

scholarly journals Investigations of Mechanical Properties of API P110 Steel Casing Tubes Operated in Deep-Sea Sour Condensate Well Conditions

2020 ◽  
Vol 27 (3) ◽  
pp. 121-129
Author(s):  
Yao Zilin ◽  
Wang Yu ◽  
Yang Xuefeng ◽  
Gao Anping ◽  
Zhang Rong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Strength ◽  
Yield Strength ◽  
Deep Sea ◽  
Performance Model ◽  
Continuous Change ◽  
Element Analysis ◽  
Equivalent Yield

AbstractDue to the complexity of the marine environment, in deep-sea drilling, all kinds of strings are corroded by different deep-sea conditions for a long time, accompanied by high temperature and high pressure, which lead to the continuous change of mechanical properties of materials. In order to solve the problem that the material mechanical parameters cannot be accurately described in the performance analysis of the casing, deep-sea simulated corrosion and material damage experiments of P110 material were carried out in this paper. Mass loss and tensile experiments on corrosion-damaged test pieces were conducted under different corrosion experimental periods. The changes in mechanical properties of the material were analyzed. Equations of the variation of the equivalent yield strength and the equivalent tensile strength were obtained. The results show that the equivalent yield strength and the equivalent tensile strength decrease with the increase of the weight loss rate. Based on the experimental results and finite element analysis, a method for establishing the material corrosion model was proposed in this paper. The deep-sea drilling corrosion performance model of P110 material was established, which greatly reduced the error caused by the material uniformity assumption in finite element analysis. This paper provides a theoretical basis for the analysis of reliability and life of P110 materials in wells.

scholarly journals Effect of B4C particle size on the mechanical properties of B4C reinforced aluminum matrix layered composite

2019 ◽  
Vol 26 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Guangye Xu ◽  
Yingshui Yu ◽  
Yubo Zhang ◽  
Tingju Li ◽  
Tongmin Wang
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Impact Strength ◽  
Mass Fraction ◽  
Ceramic Composites ◽  
Reinforcement Particle ◽  
The Impact ◽  
B4c Particle

Abstract Reinforcement particle size is very important for the performance of metal ceramic composites. This work studied the influence of B4C particle size on the mechanical properties of Al matrix layered composites. These composites were fabricated using a simplified semicontinuous casting and hot-rolling process. To obtain an optimized filling structure of particles, Horsfield filling principle was applied to determine the size and mass fraction of B4C particles. Four sizes of B4C particles were used with various combinations. The results showed that with the increase of the B4C particle size and fine B4C mass fraction, the hardness of the composites decreases whereas the impact strength and ultimate tensile strength increase. The residual stress at interface should be responsible for the variation in properties. Besides, the interparticle distance also contributes to the change in impact strength and ultimate tensile strength.

scholarly journals Further analysis of indentation loading curves: Effects of tip rounding on mechanical property measurements

1998 ◽  
Vol 13 (4) ◽  
pp. 1059-1064 ◽  
Author(s):  
Yang-Tse Cheng ◽  
Che-Min Cheng
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Yield Strength ◽  
Element Analysis ◽  
Perfectly Plastic ◽  
Elastic Perfectly Plastic ◽  
Conical Indentation

The effects of indenter tip rounding on the shape of indentation loading curves have been analyzed using dimensional and finite element analysis for conical indentation in elastic-perfectly plastic solids. A method for obtaining mechanical properties from indentation loading curves is then proposed. The validity of this method is examined using finite element analysis. Finally, the method is used to determine the yield strength of several materials for which the indentation loading curves are available in the literature.

scholarly journals Numerical Study on the Forming Behaviour of Multilayer Sheets

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 716
Author(s):  
Armando E. Marques ◽  
Pedro A. Prates ◽  
André F. G. Pereira ◽  
Nataliya A. Sakharova ◽  
Marta C. Oliveira ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Deep Drawing ◽  
Numerical Study ◽  
Physical And Mechanical Properties ◽  
Bulge Test ◽  
Geometrical Parameters ◽  
Equivalent Material ◽  
Element Analysis ◽  
Plastic Behaviour ◽  
Forming Behaviour

Nowadays, composite materials are playing an increasingly important role in material forming processes because they can combine remarkable physical and mechanical properties with relatively low weight. The main objective of this work is to study the forming behaviour of multi-layer sheets by finite element analysis. The possibility of replacing the composite by a single equivalent material, with a plastic behaviour similar to that of the composite, was also numerically analysed. This study focuses on two three-layer sheets, each composed of two metallic outer layers and a core of polymeric material; on one of the sheets, the outer layers are steel and, on the other, aluminium. Numerical simulations of the bulge test and of the deep drawing of a U-channel profile and a square cup were used to evaluate the behaviour of the multi-layer sheets and their equivalent materials. The influences of the difference of the mechanical properties of the constituent materials and some geometrical parameters of the deep-drawing process on the plastic behaviour, namely the curves of force vs. displacement of the punch and the strain and stress distributions, were evaluated. The possibility of using the bulge test to characterize the behaviour of the composite was also analysed.

Effect of Cooling Rate on the Microstructure and Mechanical Properties of ZK60 Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 319-322 ◽  
Author(s):  
Jin Bao Lin ◽  
Qu Dong Wang ◽  
Li Ming Peng ◽  
Yang Zhou ◽  
Wen Jiang Ding
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Cooling Rate ◽  
Casting Process ◽  
Strengthening Effect ◽  
Element Analysis ◽  
Fine Grain ◽  
Microstructure And Mechanical Properties ◽  
Zk60 Alloy ◽  
Fea Simulation

Microstructure and mechanical properties of Mg-6.0wt%Zn-0.5wt%Zr (ZK60) alloy were studied as a function of cooling rate. The temperature field and cooling rate during the casting process were investigated by use of finite element analysis (FEA) simulation. The results showed that the microstructure was refined and the eutectic phase distributed much uniformly with the increase of cooling rate. The increase of yield strength, ultimate strength and elongation can be ascribed to the strengthening effect of fine grain. Relationship between grain size and yield strength is consistent with the Hall-Petch formalism: 1/ 2 80.37 132.56 − = + d y σ .

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