Results 111 to 120 of about 390 (156)

ANCF Multiplicative-Decomposition Thermoelastic Approach for Arbitrary Geometry

Journal of Structural Engineering, 2021
AbstractThe classical approach for the thermal analysis of solids and fluids uses the strain additive decomposition to account for the effect of the temperature.
Ahmed A. Shabana, Dayu Zhang
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ANCF curvature continuity: application to soft and fluid materials

Nonlinear Dynamics, 2020
The continuity of the position-vector gradients at the nodal points of a finite element mesh does not always ensure the continuity of the gradients at the element interfaces. Discontinuity of the gradients at the interface not only adversely affects the quality of the simulation results, but can also lead to computer models that do not properly ...
Ahmed A. Shabana, Dayu Zhang
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Rational ANCF Thin Plate Finite Element

Journal of Computational and Nonlinear Dynamics, 2016
In this paper, a rational absolute nodal coordinate formulation (RANCF) thin plate element is developed and its use in the analysis of curved geometry is demonstrated. RANCF finite elements are the rational counterpart of the nonrational absolute nodal coordinate formulation (ANCF) finite elements which employ rational polynomials as basis or blending ...
Pappalardo, Carmine M., Yu, Zuqing, Zhang, Xiaoshun, Shabana, Ahmed A.   +3 more
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Definition of ANCF Finite Elements

Journal of Computational and Nonlinear Dynamics, 2015
Since the absolute nodal coordinate formulation (ANCF) was introduced, a large number of fully parametrized and gradient deficient finite elements were developed. Some of the finite elements (FE) proposed do not fall into the ANCF category, and for this reason, this technical brief describes the general requirements for ANCF finite elements.
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A New ANCF/CRBF Fully Parameterized Plate Finite Element

Journal of Computational and Nonlinear Dynamics, 2016
In this paper, the consistent rotation-based formulation (CRBF) is used to develop a new fully parametrized plate finite element (FE) based on the kinematic description of the absolute nodal coordinate formulation (ANCF). The ANCF/CRBF plate element has a general geometric description which is consistent with the basic principles of continuum mechanics,
Pappalardo, Carmine M., Wallin, Michael, Shabana, Ahmed A.   +2 more
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ANCF Modeling of the Contact Geometry and Deformation in Biomechanics Applications

Volume 2: 32nd Computers and Information in Engineering Conference, Parts A and B, 2012
The purpose of this investigation is to demonstrate the use of the finite element (FE) absolute nodal coordinate formulation (ANCF) and multibody system (MBS) algorithms in modeling both the contact geometry and ligaments deformations in biomechanics applications. Two ANCF approaches can be used to model the rigid contact surface geometry. In the first
F. Marina Gantoi, Michael A. Brown, Ahmed A. Shabana   +2 more
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Performance Evaluation of ANCF Tetrahedral Elements in the Analysis of Liquid Sloshing

Journal of Verification, Validation and Uncertainty Quantification, 2020
Abstract The performance of the absolute nodal coordinate formulation (ANCF) tetrahedral element in the analysis of liquid sloshing is evaluated in this paper using a total Lagrangian nonincremental solution procedure. In this verification study, the results obtained using the ANCF tetrahedral element are compared with the results of the
Dayu Zhang, Emanuele Grossi, Ahmed A. Shabana   +2 more
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Experimental Validation of Two Damping Force Models for the ANCF

Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 2007
Many researchers have studied computer-aided simulations of elastic bodies undergoing large deflections and large deformations. But there have been few attempts to validate the numerical formulations used in these studies. The main aim of this paper is to validate the absolute nodal coordinate formulation (ANCF) by comparing the results to experimental
Hyun-Woo Kim, Wan-Suk Yoo, Jeong-Hyun Sohn   +2 more
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ANCF reference node for multibody system analysis

Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2014
The objective of this short communication is to introduce the important concept of the absolute nodal coordinate formulation reference node (ANCF-RN), a concept that can be used effectively to develop new and complex multibody system (MBS) models. The ANCF-RN allows for defining constraints and joints using linear algebraic equations, can be used to ...
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Mixed-Coordinate ANCF Rectangular Plate Finite Element

Journal of Computational and Nonlinear Dynamics, 2015
Higher order finite elements (FEs) based on the absolute nodal coordinate formulation (ANCF) may require the use of curvature vectors as nodal coordinates. The curvature vectors, however, can be difficult to define at the reference configuration, making such higher order ANCF FEs less attractive to use.
Zuqing Yu, Ahmed A. Shabana
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