33 Result(s)
within
Chapter
S.N. Atluri
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Chapter and Conference Paper
Elastic-Plastic Analyses of a Three-Point Bend Specimen and a Fracturing Pipe
An assumed displacement, hybrid finite element method was used to analyze the elastic-plastic plane strain state of a three point bend specimen. A shell code was used to analyze the elastic dynamic propagation...
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Chapter and Conference Paper
New General and Complementary Energy Theorems, Finite Strain, Rate Sensitive Inelasticity and Finite Elements: Some Computational Studies
General variational theorems for the rate problems of rate-dependent finite strain inelasticity, in terms of the appropriate rates of the first and second Piola-Kirchhoff stress tensors, the symmetrized Biot-L...
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Chapter and Conference Paper
Hybrid and Mixed Finite Elements in Fluid Mechanics
In this paper certain new concepts in the solution of Navier Stokes equations, for an incompressible fluid flow problem, using mixed and hybrid finite elements, are presented. These new methods are compared an...
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Chapter and Conference Paper
Energy-Release Rates in Dynamic Fracture: Path-Invariant Integrals, and Some Computational Studies
In this paper, the subject of path-invariant contour integrals that quantify the rate of energy release at a crack-tip, propagating under mixed-mode, unsteady conditions, with a non-constant velocity, is criti...
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Chapter and Conference Paper
Computational Studies on New Types of Path Independent Integral in Dynamic Fracture Mechanics
The so called J integral has played an important role in the enormous strides that have been made in the past 15 years or so in the subject of the mechanics of fracture. However it is now well understood that ...
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Chapter and Conference Paper
A New Endochronic Elasto-Plasticity Approach for Fatigue Crack Growth
A new endochnonic elasto-plasticity approach to analyze fatigue crack growth under general spectrum loading is presented. The endochronic theory incorporated in the present analysis can express accurately plas...
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Chapter and Conference Paper
Microcomputers
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Chapter and Conference Paper
Erratum to: Towards Computer Aided Surgery: efractive Refractive Eye Surgery Simulations
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Chapter and Conference Paper
Erratum to: Solution Technique for a Coupled System of Equations Describing Advection-Dominated Transport and Biotransformations in the Subsurface
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Chapter and Conference Paper
Evaluation of K-Factors and Weight Functions for 2-D Mixed-Mode Multiple Cracks by the Boundary Element Alternating Method
The concept of the Schwartz-Neumann alternating method [1,2], in conjunction with the boundary element method to solve for the stresses in an uncracked body, and an analytical solution for an embedded 2-D crack s...
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Chapter and Conference Paper
Computational Implementation of an Internal Time Constitutive Equations in Finite Deformation Plasticity
Finite element implementation of an internal time elasto-plastic constitutive equation that involves the plastic spin associated with Mandel’s material director is considered for finite strain deformations. A ...
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Chapter and Conference Paper
Non-Hyper-Singular Integral-Representations for Velocity (Displacement) Gradients in Elastic/Plastic Solids Undergoing Small or Finite Deformations
New integral representations for deformation (velocity) gradients in elastic or elasto-plastic solids undergoing small or large deformations are presented. Compared to the cases wherein direct differentiation ...
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Chapter and Conference Paper
Time-Finite Element Method for the Constrained Dynamics of a Rigid Body
Currently, there is a renewed interest in the study of multi-body-dynamics and its application in many fields of engineering. The mathematical model of a rigid body is useful whenever the overall motion, invol...
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Chapter and Conference Paper
Generation Phase Analysis of Dynamic and Visco-Plastic Crack Propagation in Non-Isothermal Wide Plates
This paper is concerned with a visco-plastic FEM analysis of crack run-arrest experiments of nonisothermal wide plates, which were performed as a part of the Heavy-Section Steel Technology (HSST) program in U....
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Chapter and Conference Paper
Finite-Element-Alternating Method for Analysis of Cracked Three-Dimensional Solids
The finite-element-alternating method is used to analyze part-elliptic circumferential surface cracks in cylinders. The method showed excellent convergence characteristics and yielded accurate stress-intensity...
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Chapter and Conference Paper
A Finite-Element Alternating Method for a Cost-Effective Determination of Weight-Function and S. I. F.’s for Multiple Cracks in Mixed-Mode Fracture
It is well known that a combination of the Schwarz alternating method and the finite element method is a efficient numerical method to calculate stress intensity factors of engineering structural components. N...
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Chapter and Conference Paper
Dynamic Analysis of Finitely Stretched and Rotated 3-D Space-Curved Beams
A novel theory and its computational implementation are presented for the analysis of strongly nonlinear dynamic response of highly-flexible space-beams that undergo large overall motions as well as elastic mo...
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Chapter and Conference Paper
Analysis of Traveling Wave Responses of Structures
The prediction of transient response of structures, in the form of traveling waves, is very important for controlling the dynamic behavior of structures. It is well known that the standard semi-discrete form o...
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Chapter and Conference Paper
Multi-Field Variational Problems in Computational Mechanics
A set of multi-field variational problems, which may be summarized from the genera] mixedhybrid finite element methods in comptational mechanics, are investigated. The existence, uniqueness, and convergence pr...
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Chapter and Conference Paper
Some Recent Developments in Finite-Strain Elastoplasticity Using the Field Boundary Element Method
A new boundary integral equation is derived directly for velocity gradients in a finite strain elasto-plastic solid. These integral equations for velocity gradients do not involve hyper-singularities (when the...
