Numerical Simulation of Elastic-Viscous-Plastic Properties, Polymorphous Transformations and Spall Fracture in Iron

2002 ◽  
Author(s):  
A. V. Petrovtsev
Keyword(s):  
Numerical Simulation ◽  
Spall Fracture ◽  
Plastic Properties ◽  
Polymorphous Transformations

Numerical Simulation of Forming Process for Cover with Stiffening Components Made of Grade 2 Titanium Sheet Metal

2016 ◽  
Vol 687 ◽  
pp. 206-211
Author(s):  
Wojciech Więckowski
Keyword(s):  
Numerical Simulation ◽  
Sheet Metal ◽  
Empirical Studies ◽  
Strength Properties ◽  
Forming Process ◽  
Titanium Sheet ◽  
Plastic Properties ◽  
Fem Method

This study presents the findings of numerical simulations of forming process for an inspection hole cover with stiffening ribs made of thin grade 2 titanium sheet metal. The numerical simulation was carried out using the FEM method with PAMStamp 2G software. Numerical calculations were performed with consideration for the phenomenon of material strain hardening and anisotropy of plastic properties of the sheet metal formed. Properties of the grade 2 titanium alloy analysed in the simulations were adopted based on the results of the empirical studies. Adequate parameters of the forming process were selected in order to eliminate unfavourable phenomena of losing of material coherence and sheet metal wrinkling. The effect of conditions of friction between the sheet metal and tool and pressure force of the blank holder on the forming process was investigated. The analysis of the distribution of plastic strain and reduction in wall thickness of the drawn parts can be used for determination of the effect of changes in selected parameters and orientation of the specimen on the process of drawn part forming. The quality of drawn parts was assessed based on the shape inaccuracy determined during simulation of forming. The inaccuracy depended on the conditions of the process and strength properties of the titanium sheet metal.

Application of kinetic conception to the numerical simulation of spall fracture of metals

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-439-Pr9-444
Author(s):  
B. L. Glushak ◽  
I. R. Trunin ◽  
O. A. Uvarova ◽  
S. V. Koritskaya
Keyword(s):  
Numerical Simulation ◽  
Spall Fracture

Elastic and Plastic Mechanical Properties Determined by Nanoindentation and Numerical Simulation at Mesoscale

2006 ◽  
Vol 326-328 ◽  
pp. 203-206 ◽  
Author(s):  
Feng Yuan Chen ◽  
Rwei Ching Chang
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Numerical Simulation ◽  
Small Scale ◽  
Finite Element Code ◽  
Scale Analysis ◽  
Plastic Properties ◽  
Nanoindentation Testing ◽  
Indentation Tests ◽  
Simulation And Experiment

This work presents a comparison of numerical simulation and experiment of nanoindentation testing. A commercial finite element code ANSYS is adopted in the numerical simulation, in which elastic-plastic properties are considered. A PMMA specimen and a three side pyramidal Berkovich probe tip is used in the indentation tests. While the elastic-linear workhardening properties are adopted, the numerical results agree well with the experimental data for different indentation loads. It proves the numerical simulation can be used in the small scale analysis.

scholarly journals Incipience and development of spall fracture in 30KHGSA steel, α↔ε transformation, spall fracture and damage recovery

2018 ◽  
Vol 183 ◽  
pp. 03022
Author(s):  
Svetlana Malyugina ◽  
Sergey Mokrushin ◽  
Anna Mayorova ◽  
Dmitry Kazakov ◽  
Oleg Kozelkov ◽  
...  
Keyword(s):  
Spall Strength ◽  
Steel Sample ◽  
Spall Fracture ◽  
Plastic Properties ◽  
30Khgsa Steel ◽  
Development Processes ◽  
Nanosecond Time Resolution ◽  
The Impact ◽  
Relaxation Characteristics ◽  
Better Than

Results of investigation into strength and elasto-plastic properties of 30KhGSA steel are presented. The investigation was performed with planar samples using submicrosecond shockwave length technique. Shockwave amplitude varied in the range from 4 to 26 GPa and controlled with 0.2% accuracy. Steel sample temperature varied in the range from-90 °C to 670 °C. Stress wave profiles in the samples were registered with VISAR and PDV interferometers having nanosecond time resolution and measurement error better than 0.8%. Special attention was payed to the study of spall fracture incipience and development processes as well as damage recovery (healing), and shockwave passing through the damaged region in steel samples. Relaxation characteristics of dynamic elastic limit were determined. Spall strength magnitude versus strain rate and temperature characteristics was determined. The impact of polymorphic α↔ε transition in 30KhGSA steel on spall strength was studied.

Water uptake by substituted amylose tablets: experimentation and numerical simulation

2009 ◽  
Vol 00 (00) ◽  
pp. 090904073309027-8
Author(s):  
H.W. Wang ◽  
S. Kyriacos ◽  
L. Cartilier
Keyword(s):  
Numerical Simulation ◽  
Water Uptake
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