203 Works

Shock compressibility and spall strength of textolite depending on fiber orientation

V. M. Mochalova, A.V. Utkin, V.E. Rykova, M. Endres & D.H.H. Hoffmann
The experimental study of shock wave compressibility and spall strength of an aramid fiber reinforced epoxy composite (textolite) for two fiber orientations was performed by the VISAR interferometer. The particle velocity profiles were obtained at velocities of the flyer plate from 0.65 to 5.05 km/s. The sound speed of textolite for the longitudinal direction is three times higher than that for transverse one, and as a result, the particle velocity profiles are different for two...

Solution of the plane contact problem between a finite-thickness laterally graded solid and a rigid stamp of an arbitrary tip-profile

O. Arslan
A singular integral equation (SIE) approach and a finite element method are developed for the solution of the frictional sliding contact problem between a finite-thickness laterally graded solid and a rigid stamp of an arbitrary tip-shape considering the plane strain assumption. An exponential shear modulus variation is introduced through the lateral direction. The field variables are obtained applying the Fourier transformation techniques on the governing partial differential equations. A surface displacement gradient is then utilized...

Computational method for shaping the vibro-isolation properties of semi-active and active systems

T. Krzyżyński & I. Maciejewski
The paper deals with an original methodology for modelling and control system design of the semi-active and active systems. At first a generalised simulation model of the vibration reduction system is formulated in such a way that it represents the dynamics of human body exposed to mechanical vibration. Then a novel control system design is proposed in order to adjust force characteristics of the fundamental elements included in the suspension system and consequently to reduce...

A new dynamic model for a rotating beam carrying extra partially distributed mass

A. Altınkaynak & M. Gürgöze
In this paper, a new dynamic model for the vibration analysis of an inwardoriented rotating cantilever beam with extra distributed mass was presented. The derived differential equation of motion was solved using the meshless methods of generalizedMultiquadric Radial Basis Function (RBF) and the eigenfrequencies of the system were determined. The same problem was also modeled using the finite element method and the results were compared to validate the accuracy of the proposed model. Later, the...

A study of the local entropy generation rate in a porous media burner

I. Mohammadi, J.A. Esfahani & K.C. Kim
In this paper, the work and performance of the premixed methane-air porous axisymmetrical burner have firstly been simulated numerically using the CFD tools. For this purpose the set of governing equations has been enriched by an additional energy equation in porous solid, and the chemical species transport has been extended onto the multi-step mechanism (GRI-2-11). This numerical model has been verified on the base of available benchmark experiments. Next, we have studied the local entropy...

Thermo-diffusion of a thick circular plate via modified Green–Naghdi models

A.M. Zenkour
This article presents the thermo-diffusion of an isotropic thick circular plate. The Green and Naghdi’s models including the energy dissipation are anticipated in their simple forms. Novel multi single/dual-phase-lag models with higher-order timederivatives are also provided to examine the thermo-diffusion response of the circular plate. The simple and refined forms of Green and Naghdi’s types II and III are investigated in this work. The closed-form solution of thermal diffusion governing equations is attained by taking...

Static, free and forced vibration analysis of a delaminated microbeam-based MEMS subjected to the electrostatic force

A. Razeghi-Harikandeei, B. Azizollah Ganji, R.-A. Jafari-Talookolaei & A. Abdipour
In this paper, the delamination effect on the static and natural frequency response of a microbeam subjected to the nonlinear electrostatic force is studied using a semi-analytical approach for the first time. The Euler–Bernoulli beam assumption along with the non-classical modified couple stress theory is used to obtain the governing differential equation of motion and then a reduced-order model based on Galerkin’s decomposition method is obtained. At first the microbeam with very small delamination like...

Milestones in the 150-Year History of Topology Optimization: A Review

János LÓGÓ & Hussein ISMAIL

Size and Shape Design Optimization of Truss Structures Using the Jaya Algorithm

Maksym GRZYWIŃSKI

Experimental and Analytical Investigation of Point Fixed Corrugated Metal Sheets Subjected to Blast Loading

Kai FISCHER, Alexander STOLZ & Christoph ROLLER

Heat and Mass Transfer from a Convectively Heated Vertical Surface with Chemical Reaction and Internal Heat Generation

Ibrahim Yakubu SEINI

Continuous contact problem of a functionally graded layer resting on an elastic half-plane

E. ÖNER, G. ADIYAMAN & A. BIRINCI

Response discontinuities in the solution of the incremental Mori–Tanaka scheme for elasto-plastic composites

P. SADOWSKI, K. KOWALCZYK-GAJEWSKA & S. STUPKIEWICZ

Turbulence statistics and distribution of turbulent eddies for jet flow and rigid surface interaction

S. ROY, K. DEBNATH & B.S. MAZUMDER

Droplet bouncing on the surface with micro-structure

T. BOBINSKI, G. SOBIERAJ, M. PSARSKI, G. CELICHOWSKI & J. ROKICKI

Generalized theory of thermoelastic diffusion with double porosity

T. KANSAL

On Navier slip and Reynolds transpiration numbers

Paweł ZIÓŁKOWSKI & Janusz BADUR

Asymptotic solutions for generalized thermoelasticity with variable thermal material properties

Y. WANG, D. LIU, Q. WANG & J. ZHOU

Prediction of secondary flow losses in an entrance duct to a low-pressure turbine

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Effects of Three-Axial Material Inhomogeneity on Lengthwise Cracks in Non-Linear Elastic Beams

Victor Iliev RIZOV

Response Surfaces in the Numerical Homogenization of Non-Linear Porous Materials

Witold BELUCH & Marcin HATŁAS
The paper deals with the numerical homogenization of structures made of non-linear porous material. Material non-linearity causes a significant increase in computational costs for numerical homogenization procedure. An application of the response surface methodology allows a significant reduction of the computational effort providing good approximation precision. Finite element method commercial software is employed to solve the boundary-value problem in both scales. Due to the significant reduction in computing time, the proposed attitude may be applied...

Postprocessing and reliability evaluation of one-dimensional numerical simulation results in mechanical problems

Jan WOJTAS

Registration Year

  • 2020
    50
  • 2019
    129
  • 2018
    24

Resource Types

  • Data Paper
    203

Affiliations

  • Poznań University of Technology
    6
  • Tabor (Poland)
    4
  • Phetchabun Rajabhat University
    2
  • AGH University of Science and Technology
    2
  • Cracow University of Technology
    2
  • Vellore Institute of Technology University
    2
  • Silesian University of Technology
    2
  • Stellenbosch University
    2
  • An-Najah National University
    1
  • Gdańsk University of Technology
    1