scholarly journals Numerical Simulation of Constitution Relationship between Stress and Strain of Particulate Matters

2005 ◽  
Vol 42 (2) ◽  
pp. 116-124 ◽  
Author(s):  
Shinichi Yuu ◽  
Toshihiko Umekage
Keyword(s):  
Numerical Simulation ◽  
Stress And Strain ◽  
Particulate Matters

Numerical Simulation on Nanoparticles Integrated Laser Shock Peening of Aluminum Alloy

2009 ◽  
Author(s):  
Chang Ye ◽  
Gary J. Cheng
Keyword(s):  
Numerical Simulation ◽  
Particle Size ◽  
Laser Shock Peening ◽  
Particle Orientation ◽  
Stress Wave Propagation ◽  
Stress And Strain ◽  
Laser Shock ◽  
The Matrix ◽  
Final Stress ◽  
Shock Peening

In this paper, numerical simulation of nanoparticle integrated laser shock peening of aluminum alloys was carried out. A “tied constraint” was used to connect the matrix and nanoparticle assembly in ABAQUS package. Different particle size and particle volumes fraction (PVF) were studied. It was found that there is significant stress concentration around the nanoparticles. The existence of nanoparticle will influence the stress wave propagation and thus the final stress and strain state of the material after LSP. In addition, particle size, PVF and particle orientation all influence the strain rate, static residual stress, static plastic strain and energy absorption during the LSP process.

Numerical Simulation of Slope Excavation in Highway Renovation and Expansion Project

2014 ◽  
Vol 580-583 ◽  
pp. 827-830
Author(s):  
Gen Chuan Luo ◽  
Zhong Ming He ◽  
Xin Luo ◽  
Qing Guo Hu
Keyword(s):  
Numerical Simulation ◽  
Stability Analysis ◽  
Stress And Strain ◽  
Regular Pattern ◽  
Expansion Process ◽  
Excavation Process ◽  
Slope Excavation ◽  
Object Use ◽  
Simulation Results ◽  
And Control

Slope stability analysis requires detect and control the stress and strain timely. Familiar with the slope‘s stress and strain changes in excavation process has important guiding significance for the actual construction. In this paper, choose a slope in Guangxi freeway renovation and expansion process as the research object. Use FLAC3D to analysis the stress and displacement simulation results of this slope excavation step by step. Summarize the excavation regular pattern.

Theoretical Analysis and Numerical Simulation on the Hydraulic Expansion of Double-Layered Tubes

2008 ◽  
Author(s):  
Fujun Liu ◽  
Jinyang Zheng ◽  
Shoubao Ding ◽  
Xiaolian Guo
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Theoretical Analysis ◽  
Suitable Condition ◽  
Stress And Strain ◽  
Maximum Relative Error ◽  
Hoop Strain ◽  
Whole Process ◽  
Good Agreement

The quality of hydro-expanded double-layered tubes depends on the hydro-expanding pressure. Therefore, it is very important to determine the range of the hydro-expanding pressure accurately during the fabrication of double-layer tubes. According to theories of elasticity and plasticity, the responses of double-layered tubes subjected to five kinds of cases were analyzed during the hydro-expanding process. And the stress and strain for inner and outer tubes of double-layered tubes were discussed. By using the relation of deformed compatibility of hoop strain, suitable condition of hydraulic expansion and variable range of hydro-expanding pressure were obtained, and the calculating formulas between the hydro-expanding pressure and residual contact pressure was derived. Use the non-linear FEA MSC.patran/marc code to simulate the deformation and stress distribution, the whole process of hydraulic expansion was numerically investigated, in which the nonlinearities of the material, geometry and contact were all taken into account. The results show that the range of the hydro-expanding pressure from the numerical simulation is in good agreement with those from theoretical calculation with a maximum relative error of 6.52%. The investigation on the hydraulic expansion of double-layered tubes may guide the engineering design and provide references for further research.

Numerical Simulation of Stress and Deformation on Heat Transfer

2011 ◽  
Vol 422 ◽  
pp. 842-845
Author(s):  
Xue Ping Wang ◽  
Ying Zhang ◽  
Pan Li ◽  
Zhen Wei Zhang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Exchange ◽  
Structure Design ◽  
Stress And Strain ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Stress And Deformation

This paper primarily simulates the heat exchange part’s stress and strain situation under the load of temperature and gravity and their coupling impact aiming at obtaining the stress and deformation distribution. The authors took advantage of the method of the finite element analysis to study the stress and strain situation. Through the analysis, each part of the transfer’s stress and strain can be calculated. The conclusion of this paper provides the basis for the further enhancement of the machine life and optimization of the structure design.

scholarly journals FSW Numerical Simulation of Aluminium Plates by SYSWELD - Part II

2016 ◽  
Vol 66 (2) ◽  
pp. 29-36 ◽  
Author(s):  
Roland Jančo ◽  
Ladislav Écsi ◽  
Pavel Élesztős
Keyword(s):  
Numerical Simulation ◽  
Material Flow ◽  
Complex Interaction ◽  
Fluid Simulation ◽  
Stress And Strain ◽  
The Finite Element Method ◽  
Friction Stir ◽  
Simulation Process ◽  
Potential Applications ◽  
Solid State Joining

Abstract Friction Stir Welding (FSW) is one of the most effective solid state joining processes and has numerous potential applications in many industries. The simulation process can provide the evolution of physicals quantities such as temperature, metallurgical phase proportions, stress and strain which can be easily measured during welding. The numerical modelling requires the modelling of the complex interaction between thermal, metallurgical and mechanical phenomena. The aim of this paper is to describe the thermal-fluid simulation of FSW using the finite element method. In the theoretical part of paper heating is provided by the material flow and contact condition between the tool and the welded material. Thermal-mechanical results from the numerical simulation using SYSWELD are also presented for aluminium alloy.

Numerical Simulation of Precision Forming for Blade Rotor Based on DEFORM

2011 ◽  
Vol 130-134 ◽  
pp. 2388-2391
Author(s):  
Fang Liu ◽  
Lu Yun Zhang
Keyword(s):  
Numerical Simulation ◽  
Metal Flow ◽  
Flow Rule ◽  
Stress And Strain ◽  
Deformation Characteristics ◽  
Forming Process ◽  
Plastic Forming ◽  
Deform 3D

In order to study the deformation characteristics of the blade rotor in the precision forming, by means of the plastic forming software DEFORM-3D, the forming process is simulated. It is concluded that (1) the change of the stress and strain in different stages was simulated during the entire forming process. (2) Based on the stress and strain distributions, the analysis of the metal flow rule and the mechanism of the filling mold was proceeded to find that the properties of the blade rotor can be enhanced by means of the precision forming.

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