Computers

  2010 MAR 25 - (VerticalNews.com) -- According to a study from Hong Kong, People's Republic of China, "This paper addresses the problem of computing planar patterns for compression garments. in the garment industry, the compression garment has been increasingly widely used to retain the shape of a human body, where certain strain (or normal pressure) is designed at some places on the compression garment."

  "Variant values and distribution of strain can only be generated by sewing different two-dimensional (2D) patterns and warping them onto the body. We present a physical/geometric approach for computing 2D meshes that, when folded onto the three-dimensional (3D) body, can generate a user-defined strain distribution through proper distortion," wrote C.C.L. Wang and colleagues, Chinese University of Hong Kong ...read more

  2010 MAR 25 - (VerticalNews.com) -- According to recent research published in the journal Computer - Aided Design, "In this paper we present a new algorithm which turns an unstructured triangle mesh into a quad dominant mesh with edges well aligned to the principal directions of the underlying surface. instead of computing a globally smooth parameterization or integrating curvature lines along a tangent vector field. we simply apply an iterative relaxation scheme which incrementally aligns the mesh edges to the principal directions. We further obtain the quad dominant mesh by dropping the not-aligned diagonal edges from the triangle mesh. ...read more

  2010 MAR 25 - (VerticalNews.com) -- "In this paper, we present a novel computational modeling and simulation framework based on dynamic spherical volumetric simplex splines. The framework can handle the modeling and simulation of genus-zero objects with real physical properties," scientists writing in the journal Computer - Aided Design report.

  "In this framework, we first develop an accurate and efficient algorithm to reconstruct the high-fidelity digital model of a real-world object with spherical volumetric simplex splines which can represent with accuracy geometric, material, and other properties of the object simultaneously. With the tight coupling of Lagrangian mechanics, the dynamic volumetric simplex splines representing the object can accurately simulate its physical behavior because it can unify the geometric and material properties in the simulation. The visualization can be directly computed from the object's geometric or physical representation based on the dynamic spherical volumetric simplex splines during simulation without interpolation or resampling. We have applied the framework for biomechanic simulation of brain deformations, such as the brain shifting during surgery and brain injury under blunt impact. WE! have compared our simulation results with the ground truth obtained through intraoperative magnetic resonance imaging and real biomechanic experiments," wrote Y.H. Tan and colleagues, Wayne State University ...read more