فهرس المقالات Wire Drawing

• حرية الوصول المقاله
  • صفحة الملخص
  • نص كامل
  
  1 - Thermo-Mechanical Analysis of Wire Drawing of Copper with PCD die: FEM Study
  Mohammad Soroush Merkani Ghader Faraji
  Thermo-mechanical finite element simulation was used to study Copper wire drawing with PCD die. Effect of drawing angle and coefficient of friction on the distribution of stress and strain on the surface of die and cross-section of wire studied, respectively. Elasto-vis أکثر

  Thermo-mechanical finite element simulation was used to study Copper wire drawing with PCD die. Effect of drawing angle and coefficient of friction on the distribution of stress and strain on the surface of die and cross-section of wire studied, respectively. Elasto-viscoplastic and elastic models were used to simulate copper and PCD behavior in the axisymmetric model. Regardless of the amount of the drawing angle and coefficient of friction, die entrance and exit exhibit the highest stress on the surface of the die. Maximum amounts of temperature were observed on the surface of the wire exiting the deformation zone. According to the profile of pressure and temperature, the die nib bears the highest amount of pressure and temperature on the die and is susceptible to wear. Analyzing the strain on the wire and stress on the surface of the die showed that at high drawing angles, the distribution of strain on the wire becomes uneven, also stress on the die nib will increase. In contrast, at low drawing angles, the temperature and drawing force rise because of the increase in friction effect. Choosing the drawing angle based on the optimization of the drawing force keeps all mentioned parameters in an acceptable range. تفاصيل المقالة
• حرية الوصول المقاله
  • صفحة الملخص
  • نص كامل
  
  2 - Study of Johnson-Cook Model Comprehensiveness at Moderate Strain Rate and Inverse Analysis to Modify the Constitutive Parameters Using Cold Wire Drawing Process
  Ashkan Mahmoud Aghdami Behnam Davoodi
  Johnson cook constitutive equation was utilized to model the 10100 copper alloy wires at the cold wire drawing process. Johnson cook parameters were determined using several quasi-static tensile tests at different strain rates. The wire drawing experiments carried out a أکثر

  Johnson cook constitutive equation was utilized to model the 10100 copper alloy wires at the cold wire drawing process. Johnson cook parameters were determined using several quasi-static tensile tests at different strain rates. The wire drawing experiments carried out at seven drawing conditions with two areal reductions and four drawing speeds caused the strain rate ranged from 37 to 115 s-1. Wire Drawing forces were measured using a load cell connected to the die. Analytical and finite element with VUHARD subroutine solutions were implemented to calculate the drawing forces using the Johnson cook parameters as well. Results showed that the Johnson cook model with parameters determined from a quasi-static condition was not able to predict the material behavior at the wire drawing process with a moderate strain rate. Inverse analysis using the Newton- Raphson method to minimize the objective function was carried out to modify the Johnson cook parameters. Updated Johnson cook parameters showed much more correlation with experimental results. تفاصيل المقالة
• حرية الوصول المقاله
  • صفحة الملخص
  • نص كامل
  
  3 - A Comparative Study Between Analytical, Finite Element Method andthe Experimental Results in Wire Drawing of Copper
  محمد احمدپور حسن خادمی‌زاده
  The wire drawing process is extensively used in manufacturing components such as rivet, screw, welding wire, etc. In this work, an analytical of the wire drawing process has been considered for two-stage operation. ABAQUS commercial Finite Element code has been used to أکثر

  The wire drawing process is extensively used in manufacturing components such as rivet, screw, welding wire, etc. In this work, an analytical of the wire drawing process has been considered for two-stage operation. ABAQUS commercial Finite Element code has been used to obtained the drawing force. Then, The analytical and experimental results been compared. The results show a good agreement for copper. تفاصيل المقالة