Vietnam Journal of Mechanics
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Calculation of the horizontal two-dimensional unsteady flows by the method of characteristics
Vietnam Journal of Mechanics - - 2003
This paper will be concerned with the characteristic form of the two dimensional
Saint-Venant equation system, the supplementary equations at the boundaries, the
methods of characteristics for solving the equation system and some numerical
experiments.
Exact receptance function and receptance curvature of a clamped-clamped continuous cracked beam
Vietnam Journal of Mechanics - Tập 41 Số 4 - Trang 349-361 - 2019
The receptance function has been studied and applied widely since it
interrelates the harmonic excitation and the response of a structure in the
frequency domain. This paper presents the derivation of the exact receptance
function of continuous cracked beams and its application for crack detection.
The receptance curvature is defined as the second derivative of the receptance.
The influence of the...
#receptance #curvature of receptance #frequency response function #crack #crack detection
A 4-node quadrilateral element with center-point based discrete shear gap (CP-DSG4)
Vietnam Journal of Mechanics - Tập 43 Số 4 - Trang 319-331 - 2021
This work aims at presenting a novel four-node quadrilateral element, which is
enhanced by integrating with discrete shear gap (DSG), for analysis of
Reissner-Mindlin plates. In contrast to previous studies that are mainly based
on three-node triangular elements, here we, for the first time, extend the DSG
to four-node quadrilateral elements. We further integrate the fictitious point
located at th...
#discrete shear gap #four-node quadrilateral element #finite element method #Reissner-Mindlin plate theory #CP-DSG4
Experimental studying the effect of water temperature on friction properties of marine propeller sliding bearing
Vietnam Journal of Mechanics - Tập 43 Số 4 - Trang 359-370 - 2021
This paper presents the effect of water’s temperature on the friction properties
of materials used in marine propeller sliding bearing. Copper-Rubber and
Copper-Capron, two common pairs of material in the shaft water-lubricated
polymer bearing were chosen to conduct experiments with the pin-on-disc model.
Various conditions including water temperature, stress, and sliding velocity
were examined, t...
#tribology #friction coefficient #marine sliding bearing #polymer material
Nonlinear response of doubly curved sandwich panels with CNT-reinforced composite core and elastically restrained edges subjected to external pressure in thermal environments
Vietnam Journal of Mechanics - Tập 44 Số 1 - Trang 15-28 - 2022
An analytical investigation on the nonlinear response of doubly curved panels
constructed from homogeneous face sheets and carbon nanotube reinforced
composite (CNTRC) core and subjected to external pressure in thermal
environments is presented in this paper. Carbon nanotubes (CNTs) are reinforced
into the core layer through uniform or functionally graded distributions. The
properties of constitue...
#doubly curved panel #FG-CNTRC #sandwich shell #tangential edge restraint #thermomechanical load
Free vibration and transient response of initially compressed CNT-reinforced composite plates
Vietnam Journal of Mechanics - Tập 46 Số 3 - Trang 206-216 - 2024
This paper investigates the linear free vibration and nonlinear transient
response of carbon nanotube (CNT)-reinforced composite plates subjected to
pre-existent compressive load in thermal environments. CNTs are reinforced into
matrix according to uniform and functionally graded distributions. The
properties of constitutive materials are assumed to be temperature-dependent
while the effective pro...
#CNT-reinforced composite #initial stress #free vibration #nonlinear transient response #geometrical imperfection
Response analysis and control of plates induced by piezoelectric actuators using finite element method
Vietnam Journal of Mechanics - Tập 47 Số 1 - Trang 6-23 - 2025
In this article, the shape deformation of the plate bonded to the piezoelectric
actuators and sensors is analyzed using the finite element method, and then
controlled by an algorithm. It expresses the need to conduct the comparison
between non-controllable and controlled ways with low-order finite element
methods because of the low cost of investigation. The proposed method is
investigated in thre...
#piezoelectric actuator #piezoelectric sensor #plate theory #piezoelectric injectors
Effect of initial stress on the reflection and transmission of shear horizontal waves at the interface between two transversely isotropic elastic half-spaces
Vietnam Journal of Mechanics - Tập 47 Số 3 - Trang 195-207 - 2025
The phenomenon of reflection and transmission of shear wave (horizontally
polarized) at an imperfect interface between two different transversely
isotropic elastic half-spaces is investigated in this paper. First, the
characteristic equation in the transversely isotropic half-space is derived. The
forms of the incident, reflected, and transmitted waves are derived. Then, from
the interface conditi...
#reflection #transmission #transversely isotropic #initial stress #imperfect interface
The forms of the shell with zero bending stresses subjected to hydrostatic pressure and other loads
Vietnam Journal of Mechanics - Tập 19 Số 2 - Trang 39-43 - 1997
None
On a form of Lyapunov exponents (II: Verification and illustration)
Vietnam Journal of Mechanics - Tập 27 Số 1 - Trang 23 - 31 - 2005
The form of Lyapunov exponents proposed in the part I is verified and
illustrated by examining some differential equations with well-known exact
solutions.
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