A5103065759- Metal Forming Simulation Techniques
- Metallurgy and Material Forming
- Laser and Thermal Forming Techniques
- Microstructure and mechanical properties
- Vibration and Dynamic Analysis
- High-Velocity Impact and Material Behavior
- Additive Manufacturing and 3D Printing Technologies
- Vibration Control and Rheological Fluids
- Advanced Surface Polishing Techniques
- Mechanical stress and fatigue analysis
- Engineering Structural Analysis Methods
- Interactive and Immersive Displays
- Grouting, Rheology, and Soil Mechanics
- Advanced Materials and Mechanics
- Microstructure and Mechanical Properties of Steels
- Advanced Welding Techniques Analysis
- Seismic Performance and Analysis
Seoul National University
2018-2021
Korea University
2017-2018
Computational wrapping provides a universal method to wrap arbitrary curved 3D shapes with 2D-based brittle materials.
A fully implicit stress integration algorithm is developed for the distortional hardening model, namely e−HAH capable of simulating cross−hardening/softening under orthogonal loading path changes. The solves a complete set residuals as nonlinear functions stress, microstructure deviator, and plastic state variables constitutive provides consistent tangent modulus. number to be 20 or 14 continuum shell elements, respectively. Comprehensive comparison programs are presented regarding...
In case of theoretical prediction the FLD, variations in yield stress and R-values along different material directions, were long been implemented to enhance accuracy. Although influences models hardening laws on formability well addressed, anisotropic evolution loci under monotonic loading with deformation modes is yet be explored. present study, Marciniak-Kuckzinsky (M-K) model was modified incorporate change shape initial function due hardening. Swift's law two criteria, namely Hill48...
An analysis procedure is proposed to improve the prediction accuracy of springback as well evaluate structural stability tooling used for fabricating a side sill part from UHSS. The couples stamping and subsequent tool structural. deformation stress results structure are obtained procedure. show that amount stresses so high must be reinforced design consider stability. Springback predicted with CAE in order compare between given geometry analysis. simulation deformed can predict experimental...
For the evaluation of anisotropic yield functions and hardening models, formability has been often investigated in forming sheet metals. The many ways, but a common conclusion is that it significantly influenced by anisotropy, especially directional differences stress r-value along material direction. Therefore, numerous works have presented terms accurate modeling behavior metals its implementation into finite element simulations. previous efforts include effects quadratic or non-quadratic...
Anisotropy in initial yield and subsequent hardening flow stress has been modeled the finite element simulations to enhance accuracy of formability springback sheet metal products. As continued efforts field constitutive modeling, evolution anisotropy during plastic deformation its dependency on path were also studied by many researchers. In addition behavior, elastic nonlinearity pre-deformed metals regarded as a key factor which influences forming simulation, particularly simulation. this...