Zobrazeno 1 - 10
of 34
pro vyhledávání: '"R.V. Nambiar"'
Publikováno v:
Rapid Prototyping Journal. 13:92-98
PurposeThe purpose of this work is to extend the life of plastic injection molds made by stereolithography through the use of gas‐assist technology.Design/methodology/approachPolypropylene parts were made by injection molding in stereolithography m
Publikováno v:
Computers & Structures. 54:279-288
A study has been performed for various three-dimensional elasticity problems to evaluate the performance of a three-dimensional FEM preprocessor, processor and companion remeshing modules. Both straight-sided and curve-sided tetrahedral finite elemen
Publikováno v:
Computers & Structures. 47:907-915
Closed-form representations of the Zienkiewicz-Zhu error estimators for straight edge linear and quadratic strain tetrahedral elements are presented. The closed-form representation of the element error estimators was developed using symbolic algebra.
Publikováno v:
Computing Systems in Engineering. 4:169-177
Finite element analysis is an integral part of the structural analysis process in the design and development of parts and assemblies. Various levels of integration exist between design systems and finite element modeling systems. The feasibility of a
Publikováno v:
International Journal for Numerical Methods in Engineering. 36:499-509
A simple algorithm is developed for adaptive and automatic h refinement of two-dimensional triangular finite element meshes. The algorithm is based on an element refinement ratio that can be calculated from an a posteriori error indicator. The elemen
Publikováno v:
Computers & Structures. 45:237-242
In this paper the development of closed-form representations of element stiffness matrices and the equivalent nodal loads for the linear strain and quadratic strain straight edge tetrahedral elements are presented. The closed-form representation of t
Publikováno v:
Computers & Structures. 44:1149-1167
C routines for in-core assembly and direct solution of the equations which arise in linear finite element applications are presented. The skyline storage mode is employed, and results of timing experiments with and without the use of pointer incremen
Publikováno v:
Computers & Structures. 43:69-75
Shape design sensitivity analysis for finite element analysis using straight-sided hierarchic triangular elements is considered in this paper. Using a recently developed closed-form stiffness matrix, the sensitivity analysis is carried out by direct
Autor:
Kent L. Lawrence, R.V. Nambiar
Publikováno v:
Communications in Applied Numerical Methods. 8:273-277
The validity of the Ziekiewicz–Zhu a posteriori error estimator for elasticity problems involving more than one material is examined. A simple modification to the estimation process is suggested to obtain acceptable error indicators and error estim
Publikováno v:
Artificial Intelligence and Structural Engineering.