24 citations · 118 across the 19 of their papers we have counts for
14 papers · 1 filter
Character of couple and couple-stress in continuum mechanics
Ali R. Hadjesfandiari
In this paper, the concept of moment and couple in mechanics is examined from a fundamental perspective. It turns out that although representing a couple by its moment vector is ve…
An assessment of higher gradient theories from a continuum mechanics perspective
Ali R. Hadjesfandiari, Gary F. Dargush
In this paper, we investigate the inherent physical and mathematical character of higher gradient theories, in which the strain or distortion gradients are considered as the fundam…
Fundamental governing equations of motion in consistent continuum mechanics
Ali R. Hadjesfandiari, Gary F. Dargush
We investigate the consistency of the fundamental governing equations of motion in continuum mechanics. In the first step, we examine the governing equations for a system of partic…
Consistent continuous defect theory
Ali R. Hadjesfandiari, Gary F. Dargush
By investigating the benefits and shortcomings of the existing form of continuous defect theory (CDT) and using recent advancements in size-dependent continuum mechanics, we develo…
Size-dependent couple stress Timoshenko beam theory
Ali R. Hadjesfandiari, Arezoo Hajesfandiari, Haoyu Zhang +1
In this paper, a new size-dependent Timoshenko beam model is developed based on the consistent couple stress theory. In the present formulation, the governing equations and corresp…
Couple stress theories: Theoretical underpinnings and practical aspects from a new energy perspective
Ali R. Hadjesfandiari, Gary F. Dargush
In this paper, we examine theoretical and practical aspects of several versions of couple stress theory. This includes indeterminate Mindlin-Tiersten-Koiter couple stress theory (M…
Pure plate bending in couple stress theories
Ali R. Hadjesfandiari, Arezoo Hajesfandiari, Gary F. Dargush
In this paper, we examine the pure bending of plates within the framework of modified couple stress theory (M-CST) and consistent couple stress theory (C-CST). In this development,…
Comparison of theoretical elastic couple stress predictions with physical experiments for pure torsion
Ali R. Hadjesfandiari, Gary F. Dargush
Several different versions of couple stress theory have appeared in the literature, including the indeterminate Mindlin-Tiersten-Koiter couple stress theory (MTK-CST), indeterminat…
Cubic Single Crystal Representations in Classical and Size-dependent Couple Stress Elasticity
Dipanshu Bansal, Gary F. Dargush, Amjad J. Aref +1
Beginning with Cosserat theory in the early 20th century, there have been several different formulations for size-dependent elastic response. In this paper, we concentrate on the a…
Foundations of consistent couple stress theory
Ali R. Hadjesfandiari, Gary F. Dargush
In this paper, we examine the recently developed skew-symmetric couple stress theory and demonstrate its inner consistency, natural simplicity and fundamental connection to classic…
Evolution of generalized couple-stress continuum theories: a critical analysis
Ali R. Hadjesfandiari, Gary F. Dargush
In this paper, we examine different generalized couple-stress continuum mechanics theories, including couple stress, strain gradient and micropolar theories. First, we investigate…
On the skew-symmetric character of the couple-stress tensor
Ali R. Hadjesfandiari
In this paper, the skew-symmetric character of the couple-stress tensor is established as the result of arguments from tensor analysis. Consequently, the couple-stress pseudo-tenso…
Size-dependent piezoelectricity
Ali R. Hadjesfandiari
In this paper, a consistent theory is developed for size-dependent piezoelectricity in dielectric solids. This theory shows that electric polarization can be generated as the resul…
Field of the Magnetic Monopole
A. R. Hadjesfandiari
This paper shows that based upon the Helmholtz decomposition theorem the field of a stationary magnetic monopole, assuming it exists, cannot be represented by a vector potential. P…