A computational model of the human head has been developed by Simpleware and the U.S. Naval Research Laboratory (NRL) to simulate head impact. The head model was generated using high-resolution scan data, segmentation and image-based meshing techniques, and has been used in Abaqus for a range of simulations. The NRL/Simpleware head model addresses several key limitations of existing techniques ...

In this paper, we describe an automatic technique for meshing multilayer CMOS micromachined structures for Finite Element Analysis (FEA) from device layout. The technique is based on a 3D canonical representation of the different CMOS layers and feature recognition of plate masses, springs, beams and comb drives within the surface micromachined MEMS device. Manual meshing of devices for FEA is ...

A new mesh generation algorithm called ‘LayTracks’, to automatically generate an all quad mesh that is adapted to the variation of geometric feature size in the domain is described. LayTracks combines the merits of two popular direct techniques for quadrilateral mesh generation—quad meshing by decomposition and advancing front quad meshing. While the MAT has been used for the domain decompositi...

Finite element analyses of irregular structures require adaptive mesh refinement to achieve more accurate results in an efficient manner. This is also true for a non-conventional finite method with Kriging interpolation, called the Kriging-based (K-FEM). paper presents study automatic meshing procedures two-dimensional linear elasticity problems using K-FEM. The Matlab Partial Differential Equa...

We present an eecient 3D meshing algorithm which combines the merits of two popular meshing methods, advancing front and sphere packing methods. In particular , it inherits the practicality and simplicity of advancing front and the size-and-quality guarantee of the sphere packing method. We prove that it generates a well-shaped mesh whose size is within a constant factor of the optimal possible...

Curvilinear tooth gears are commonly produced on a face milling cutter and a hob cutter. However, this paper proposes a kind of curvilinear tooth gear which is processed by a parallel linkage with a single blade cutter. For the purpose of identifying the meshing and contact characteristics of curvilinear tooth gears, the paper covers the following: (i) equations of tooth surfaces are deduced fr...

Automatic and high quality hexahedral meshing of complex solid models is still a challenging task. To guarantee the quality of the generated mesh, current commercial software normally requires users to manually decompose a complex solid model into a set of simple geometry like swept volume whose high quality hexahedral mesh can be easily generated. The manual decomposition is a time-consuming p...

Abstract As the most widely used gear measuring instrument, center can measure individual deviations of a tooth flank other than comprehensive gear. However, transmission error is an important performance indicator in meshing process. It trend to obtain from deviations. In this study, calculation method proposed based on point clouds obtained by optical sensors. According principle, introduced ...

The binary Mumford-Shah model is a widespread tool for image segmentation and can be considered as a basic model in shape optimization with a broad range of applications in computer vision, ranging from basic segmentation and labeling to object reconstruction. This paper presents robust a posteriori error estimates for a natural error quantity, namely the area of the non properly segmented regi...

s and Manuscripts [18] Tight Bounds on the Complexity of Recognizing Odd-Ranked Elements. Shripad Thite. Manuscript, 2006; arXiv:cs.CC/0606038 [19] On Covering a Graph Optimally with Induced Subgraphs. Shripad Thite. Manuscript, 2006; arXiv: cs.DM/0604013 [20] Adaptive Spacetime Meshing in 2D×Time for Nonlinear and Anisotropic Media. Shripad Thite, Jayandran Palaniappan, Jeff Erickson, Robert H...