Results 41 to 50 of about 17,342 (259)
AxiomsIn this study, we investigate the upper- and lower-bound approximations of numerical eigenvalues derived by weak Galerkin spectral element methods on arbitrary convex quadrilateral meshes for the Laplace eigenvalue problem.
Xiaofeng Xu, Jiajia Pan
doaj +1 more source
A Hybrid Stress Plane Element with Strain Field [PDF]
Civil Engineering Infrastructures Journal, 2017 In this paper, a plane quadrilateral element with rotational degrees of freedom is developed. Present formulation is based on a hybrid functional with independent boundary displacement and internal optimum strain field.
Mohammad Rezaiee-Pajand, M. Yaghoobi
doaj +1 more source
Connectivity Compression for Irregular Quadrilateral Meshes [PDF]
, 1999 Applications that require Internet access to remote 3D datasets are often limited by the storage costs of 3D models. Several compression methods are available to address these limits for objects represented by triangle meshes.
King, Davis +2 more
core +6 more sources
, 2002 We define and examine flip operations for quadrilateral and hexahedral meshes, similar to the flipping transformations previously used in triangular and tetrahedral mesh generation.Comment: 20 pages, 24 figures.
Bern, Marshall +2 more
core +3 more sources
An embedded crack model for failure analysis of concrete solids [PDF]
, 2010 We present a quadrilateral fi nite element with an embedded crack that can be used to model tensile fracture in two-dimensional concrete solids and the crack growth. The element has kinematics that can represent linear jumps in both normal and tangential
Brancherie, Delphine +3 more
core +1 more source
Efficient unstructured quadrilateral mesh generation [PDF]
International Journal for Numerical Methods in Engineering, 2000 This work is devoted to the description of an algorithm for automatic quadrilateral mesh generation. The technique is based on a recursive decomposition of the domain into quadrilateral elements. This automatically generates meshes composed entirely by quadrilaterals over complex geometries (there is no need for a previous step where triangles are ...
Sarrate Ramos, Josep, Huerta, Antonio
openaire +4 more sources
Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam
Advanced Engineering Materials, EarlyView.Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley +1 more source
Engineering ReportsIn this article, we integrate the template method and the mapping method to propose a new approach for generating quadrilateral meshes with controllable density transitions for planar geometric models.
Yize Li, Qingyuan Hu, Gengdong Cheng
doaj +1 more source
Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions
Advanced Functional Materials, EarlyView.Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley +1 more source
Vietnam Journal of Mechanics, 2023 This paper presents an extension of the Proportional Topology Optimization (PTO) with virtual elements for multi-material problems with mass and cost constraints.
Minh Tuan Tran, Minh Ngoc Nguyen
doaj +1 more source