Teaching Documents by nader zamani
– The widespread availability of commercial FEA software in the academic institutions and pressur... more – The widespread availability of commercial FEA software in the academic institutions and pressure from industry to include it in the modern undergraduate curriculum has resulted in unique challenges in teaching the topic to undergraduate students who may or may not be adequately prepared to handle the subject. The present expository paper shares the author's experiences in delivering the FEA subject to university students both at the undergraduate and the graduate levels. The most common pitfalls for the understanding of the tool, particularly by the undergraduate students are highlighted.
Papers by nader zamani
Proceedings of the 14th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Engineering Innovations for Global Sustainability”, 2016
The widespread availability of commercial FEA software in the academic institutions and pressure ... more The widespread availability of commercial FEA software in the academic institutions and pressure from industry to include it in the modern undergraduate curriculum has resulted in unique challenges in teaching the topic to undergraduate students who may or may not be adequately prepared to handle the subject. The present expository paper shares the author's experiences in delivering the FEA subject to university students both at the undergraduate and the graduate levels. The most common pitfalls for the understanding of the tool, particularly by the undergraduate students are highlighted.
Proceedings of the 16th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Innovation in Education and Inclusion”, 2018
The concept of "rigid" element was introduced into the commercial FEA software in the early sixti... more The concept of "rigid" element was introduced into the commercial FEA software in the early sixties. The main role of such an element was to account for special connections such as welding features, bolts, and specifying very stiff regions within the structure of interest. Unfortunately, with the passage of time, the functionalities/capabilities of such powerful elements have faded from the commercial FEA software documentation. As a result, such elements are the least "understood" and most "widely abused" features by an average user. This paper tries to address such an element within the confines of the Catia v5 commercial software with emphasis on modal and dynamic calculations.
Mathematics and Computers in Simulation
Ocean Systems Engineering, 2011
ABSTRACT In combat operations, naval ships may be subjected to considerable air blast and underwa... more ABSTRACT In combat operations, naval ships may be subjected to considerable air blast and underwater shock loads capable of causing severe structural damage. As the experimental study imposes great monetary and time cost, the numerical solution may provide a valuable alternative. This study emphasises on numerical analysis for optimization of stiffened and unstiffened plate's structural response subjected to air blast load. Linear and non linear finite element (FE) modeling and analysis was carried out and compared with existing experimental results. The obtained results reveal a good agreement between numerical and experimental observations. The presented FE models can eliminate confusion regarding parameters selection and FE operations processing, using commercial software available currently.
The Bäcklund-Bianchi method is employed to generate, in three spatial dimensions, the following m... more The Bäcklund-Bianchi method is employed to generate, in three spatial dimensions, the following multiple solutions of Liouville's equation ∇2α = exp α: The three-wave interaction function α3 and the five-wave interaction function α5. It is verified numerically that α3 satisfies Liouville's equation to an accuracy of one part in 1014, while α5 satisfies it to one part in 106. The construction of α5 is conditional upon solving ten nonlinear constraint equations. We analyze the complicated structures of α3 and α5 with the help of a three-dimensional plotting routine. It is found that α3 is, surprisingly enough, only characterized by a single ring singularity, while α5 exhibits three ring singularities. It is speculated that the function tanh α3 represents a ring soliton whose shape appears to be preserved in the nonlinear superposition of similar ring solitons. The derivation of Liouville's solutions α3 and α5 is intimately connected with the auxiliary functions β2 and β4 which solve Laplace's equation. The latter are also derived and plotted in the paper.
Proceedings of the 13th Latin American and Caribbean Conference for Engineering and Technology Engineering Education Facing the Grand Challenges What Are We Doing?, 2015
Journal of the Franklin Institute, 1989
Computers Structures, 1990
Int J Crashworthiness, 2001
International Journal of Impact Engineering, Feb 28, 2002
Understanding the energy absorption characteristics of automotive components is necessary for the... more Understanding the energy absorption characteristics of automotive components is necessary for the development of safe and crashworthy vehicles. This research experimentally and numerically studies the energy absorption performance of a steering wheel armature in contact with a deformable chestform (bodyform) during a collision. Variations in the location of impact on the armature, armature orientation, and chestform impact velocity are considered
Int J Numer Method Eng, 1992
In this paper, the combination of the h-method (mesh refinement) and the r-method (mesh redistrib... more In this paper, the combination of the h-method (mesh refinement) and the r-method (mesh redistribution) is employed to solve the Laplace equation using the boundary element procedure. The key in this approach is to derive on upper bound for the residual associated with the boundary element solution and minimize this bound with respect to an unknown grading function. The latter part is achieved by employing techniques of the calculus of variations.
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Teaching Documents by nader zamani
Papers by nader zamani