Akshay Mallikarjuna | Auburn University (original) (raw)

Uploads

Papers by Akshay Mallikarjuna

Research paper thumbnail of Simulation of Dynamic Event of Impact Using Explicit 3D Fem Model and Validation by Experiment and Contact Models

International Journal of Engineering Applied Sciences and Technology, 2021

In this study, an optimized method to simulate the dynamic 3D event of the impact of a rod with a... more In this study, an optimized method to simulate the dynamic 3D event of the impact of a rod with a flat surface has been presented. Unlike the 2D FEM based contact models, in this study both the bodies undergoing the impact are considered elastic(deformable) and simulation is the dynamic event of the impact, instead of predefined 2D symmetric contact analysis. Prominent contact models and plasticity models to define material properties in ANSYS are reviewed. Experimentation results of normal and oblique impact of the rod for different rods provided the coefficient of restitution. Experimental results of permanent deformation on the base for different impact velocity is derived out of a prominent impact study. The simulation results are in co-relation with experiment and both indentation and flattening models on the coefficient of restitution (COR) and permanent deformation of the base and rod after the impact. Thus, the presented 3D Explicit Dynamic simulation of impact is validated to analyze the impact behavior of the 2 bodies without any predefined assumptions with respect to boundary conditions or material properties.

Research paper thumbnail of Modal Analysis of Coupled Structures and Parametric Relation of the Coupled and Uncoupled Natural Frequency of Cylinders by Finite Element Analysis

International Journal of Engineering Applied Sciences and Technology

The purpose of this investigation is to explore the interaction of fluids with thin cylindrical s... more The purpose of this investigation is to explore the interaction of fluids with thin cylindrical structures of finite length. Our emphasis is on describing or approximating the coupled natural frequency of the fluid-filled structures as a function of modes of the uncoupled structures. This paper reviews the historical and theoretical findings of the relevant phenomenon important to the structural acoustics, modal frequencies of the cylindrical shell structures. The study focuses on the parametric analysis of fluid coupled thin cylindrical structures by Finite Element Analysis. Our specific contribution is defining a factor for analyzing and predicting the natural frequency of the water coupled cylinders for a given empty cylinder. Proposed a condition to differentiate the strong and weak coupling of the fluid and structure from a structural analysis point of view.

Research paper thumbnail of Modal Analysis of Coupled Structures and Parametric Relation of the Coupled and Uncoupled Natural Frequency of Cylinders by Finite Element Analysis

The purpose of this investigation is to explore the interaction of fluids with thin cylindrical s... more The purpose of this investigation is to explore the interaction of fluids with thin cylindrical structures of finite length. Our emphasis is on describing or approximating the coupled natural frequency of the fluid-filled structures as a function of modes of the uncoupled structures. This paper reviews the historical and theoretical findings of the relevant phenomenon important to the structural acoustics, modal frequencies of the cylindrical shell structures. The study focuses on the parametric analysis of fluid coupled thin cylindrical structures by Finite Element Analysis. Our specific contribution is defining a factor for analyzing and predicting the natural frequency of the water coupled cylinders for a given empty cylinder. Proposed a condition to differentiate the strong and weak coupling of the fluid and structure from a structural analysis point of view.

Research paper thumbnail of Simulation of Dynamic Event of Impact Using Explicit 3D Fem Model and Validation by Experiment and Contact Models

International Journal of Engineering Applied Sciences and Technology, 2021

In this study, an optimized method to simulate the dynamic 3D event of the impact of a rod with a... more In this study, an optimized method to simulate the dynamic 3D event of the impact of a rod with a flat surface has been presented. Unlike the 2D FEM based contact models, in this study both the bodies undergoing the impact are considered elastic(deformable) and simulation is the dynamic event of the impact, instead of predefined 2D symmetric contact analysis. Prominent contact models and plasticity models to define material properties in ANSYS are reviewed. Experimentation results of normal and oblique impact of the rod for different rods provided the coefficient of restitution. Experimental results of permanent deformation on the base for different impact velocity is derived out of a prominent impact study. The simulation results are in co-relation with experiment and both indentation and flattening models on the coefficient of restitution (COR) and permanent deformation of the base and rod after the impact. Thus, the presented 3D Explicit Dynamic simulation of impact is validated to analyze the impact behavior of the 2 bodies without any predefined assumptions with respect to boundary conditions or material properties.

Research paper thumbnail of Modal Analysis of Coupled Structures and Parametric Relation of the Coupled and Uncoupled Natural Frequency of Cylinders by Finite Element Analysis

International Journal of Engineering Applied Sciences and Technology

The purpose of this investigation is to explore the interaction of fluids with thin cylindrical s... more The purpose of this investigation is to explore the interaction of fluids with thin cylindrical structures of finite length. Our emphasis is on describing or approximating the coupled natural frequency of the fluid-filled structures as a function of modes of the uncoupled structures. This paper reviews the historical and theoretical findings of the relevant phenomenon important to the structural acoustics, modal frequencies of the cylindrical shell structures. The study focuses on the parametric analysis of fluid coupled thin cylindrical structures by Finite Element Analysis. Our specific contribution is defining a factor for analyzing and predicting the natural frequency of the water coupled cylinders for a given empty cylinder. Proposed a condition to differentiate the strong and weak coupling of the fluid and structure from a structural analysis point of view.

Research paper thumbnail of Modal Analysis of Coupled Structures and Parametric Relation of the Coupled and Uncoupled Natural Frequency of Cylinders by Finite Element Analysis

The purpose of this investigation is to explore the interaction of fluids with thin cylindrical s... more The purpose of this investigation is to explore the interaction of fluids with thin cylindrical structures of finite length. Our emphasis is on describing or approximating the coupled natural frequency of the fluid-filled structures as a function of modes of the uncoupled structures. This paper reviews the historical and theoretical findings of the relevant phenomenon important to the structural acoustics, modal frequencies of the cylindrical shell structures. The study focuses on the parametric analysis of fluid coupled thin cylindrical structures by Finite Element Analysis. Our specific contribution is defining a factor for analyzing and predicting the natural frequency of the water coupled cylinders for a given empty cylinder. Proposed a condition to differentiate the strong and weak coupling of the fluid and structure from a structural analysis point of view.

Log In