Results 1 to 10 of about 54 (32)

Nonlinear forced vibration analysis of composite beam combined with DQFEM and IHB [PDF]

AIP Advances, 2020
In this paper, a forced vibration model of composite beams under the action of periodic excitation force considering geometric nonlinearity is proposed. For the strain–displacement relationship, Timoshenko beam theory is used, and the element and system ...
Kwangchol Ri, Poknam Han, Inchol Kim
exaly   +4 more sources

A study on the crack presence effect on dynamical behavior of higher-order Quasi-3D composite steel-polymer concrete box section beams via DQFEM

Frattura Ed Integrita Strutturale
This paper presents a dynamic and critical buckling analysis of the presence of a crack of steel-polymer concrete composite beams modelled using a refined quasi 3D beam theory. The beam model is a hollow steel box section filled with a composite concrete
Ahmed Saimi, Mouloud Dahmane
exaly   +10 more sources

Application of a Modified Differential Quadrature Finite Element Method to Flexural Vibrations of Composite Laminates with Arbitrary Elastic Boundaries

Buildings, 2022
This paper formulates a modified differential quadrature finite element method (DQFEM) by a combination of the standard DQFEM and the virtual boundary spring technique, which makes it easy to implement arbitrary elastic restraints by assigning reasonable
Wei Xiang, Lina He
exaly   +4 more sources

Erratum to `Efficient and reliable solutions of static and dynamic nonlinear structural mechanics problems by an integrated numerical approach using DQFEM and direct time integration with accelerated equilibrium iteration schemes' [Applied Mathematical Modelling 24 (2000) 637–655]

Applied Mathematical Modelling, 2000
C -N Chen
exaly   +3 more sources

Analysis of Unbalance Response and Vibration Reduction of an Aeroengine Gas Generator Rotor System

Lubricants
To ensure the vibration safety of rotor support systems in modern aeroengines, this study develops a dynamic model of the aeroengine gas generator rotor system and analyzes its complex unbalance response characteristics.
Haibiao Zhang, Xing Heng, Ailun Wang, Tao Liu, Qingshan Wang, Kun Liu   +5 more
doaj   +2 more sources

Investigation on rub-impact response characteristics of gas generator rotor system under external excitation. [PDF]

Sci Rep
Gas turbine engines of tanks, which are land-based derivatives of aero-turboshaft engines, share core gas generator rotor structures but face significantly higher external impact loads due to combat environments, require enhanced dynamic performance ...
Zhang H, Liu T, Zhao H, Wang Q.
europepmc   +2 more sources

Efficient and reliable solutions of static and dynamic nonlinear structural mechanics problems by an integrated numerical approach using DQFEM and direct time integration with accelerated equilibrium iteration schemes

Applied Mathematical Modelling, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
C -N Chen
exaly   +2 more sources

Thermisches Verhalten von Tankspeichern – Teil 1: Modifizierter Modellansatz nach Lagrange Thermal Behavior of Storage Tanks – Part 1: Modified Model Approach According to Lagrange

Chemie Ingenieur Technik, Volume 94, Issue 8, Page 1141-1150, August 2022., 2022
Warmwasserspeicher sind ein wichtiger Bestandteil von Wärmeversorgungssystemen. Mit Speichermodellen können deren thermisches Verhalten, wie zum Beispiel der Schichtungsbetrieb und die Wärmeverluste simuliert werden. Der Artikel stellt einen Modellansatz für große Flachbodentanks vor, der auf dem Prinzip von Lagrange basiert und variable Stoffwerte ...
Jonathan Rausendorf, Willi Roscher, Thomas Oppelt, Thorsten Urbaneck   +3 more
wiley   +1 more source

Wave‐Based Method for Free Vibration Analysis of Orthotropic Cylindrical Shells with Arbitrary Boundary Conditions

Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019
The wave‐based method (WBM) is a feasible method which investigates the free vibration characteristics of orthotropic cylindrical shells under general boundary conditions. Based on Reissner–Naghid’s shell theory, the governing motion equation is established, and the displacement variables are transformed into wave functions formed to satisfy the ...
Fuzhen Pang, Ruidong Huo, Haichao Li, Cong Gao, Xuhong Miao, Yi Ren, Stylianos Georgantzinos   +6 more
wiley   +1 more source

Vibration Analysis of Plate with Irregular Cracks by Differential Quadrature Finite Element Method

Shock and Vibration, Volume 2017, Issue 1, 2017., 2017
A universal method combining the differential quadrature finite element method with the virtual spring technique for analyzing the free vibration of thin plate with irregular cracks is proposed. Translational and rotational springs are introduced to restrain the vertical displacement and orientation of the plate.
Zhongyuan Xu, Wei Chen, Ivo Caliò
wiley   +1 more source