Circular simple shear extrusion process was introduced as a new geometry for simple shear extrusion technique to fabricate ultrafine-grained materials. Similar to the simple shear extrusion method, this process is also based on direct extrusion, and the samples deform in a simple shear manner. In this investigation, the simulations were carried out using the commercial finite element code ABAQU...

The objective of this study was to develop a numerical model for the prediction of temperature distribution, effective plastic strain distribution, and especially material flow in friction stir welding of copper plates. The DEFORM-3D software was used by incorporating a lagrangian incremental formulation. Threedimensional results of the material flow pattern which were extracted using the po...

In this paper, we present a new technique for creating photorealistic textured 3D facial models from photographs. Starting with several pairs of calibrated views of a human subject, we first automatically recover a 3D dense reconstruction for each pair. We employ a user-assisted technique to align these 3D meshes with a generic face mesh. A scattered data interpolation technique is then used to...

This paper describes how to use Deform-3D software create a turning process model that can be used simulate the on AISI 1025 carbon steel and Al6061 billets in industrial automotive applications. The Software is build 3D Finite Element model. Pre-processing, Simulation, Post-processing are all modules simulate. Tool workpiece information, as well appropriate necessary parameters, were taken int...

We present an algorithm for 3-D face modeling from a frontal and a profile view images of a person’s face. The algorithm starts by computing the 3D coordinates of automatically extracted facial feature points. The coordinates of the selected feature points are then used to deform a 3D generic face model to obtain a 3D face model for that person. Procrustes Analysis is used to globally minimize ...

Medical simulation and visualization of 3D lung deformations is an effective tool for guiding clinical technicians on clinical maneuvers. Technical advances in clinical imaging have led to the extraction of patient-specific 3D static lung models. However, in order to visualize a human subject’s lung deformation at different physical conditions, it is required to animate (or deform) the 3D lung ...

Current methods to produce 3-dimensional tooth root models involve conversion from radiographic means (computed tomography) or creation using computer-assisted design (CAD) software. The former lacks detail while the second is manually fabricated and can bear little resemblance to the original. Thin-plate splines have been used in morphometrics to define changes of shape between subjects of the...

Shading has a great impact to the human perception of 3D objects. Thus, in order to create or to deform a 3D object, it seems natural to manipulate its perceived shading. This paper presents a new solution for the software implementation of this idea. Our approach is based on the ability of a user to coarsely draw a shading, under different lighting directions. With this intuitive process, user...