129 Works

Comparison Between Numerical Analysis and Actual Results for a Pull-Out Test

Jakub GONTARZ, Jerzy PODGÓRSKI, Józef JONAK, Marek KALITA & Michał SIEGMUND
The paper describes a computer analysis of the pull-out test used to determine the force needed to pull out a fragment of rock and the shape of this broken fragment. The analyzed material is sandstone and porphyry. The analysis included a comparison of different methods of propagation of cracks in the Abaqus computer program using the Finite Element Method. The work also contains a description of laboratory tests and analytical considerations.

Fast GPU simulation of reinforced concrete at the scale of reinforcement ribs by the discrete element method

B. Berisha, S. Hirsiger, H. Hippke, P. Hora, A. Mariaux, D. Leyvraz & C. Bezençon
Modeling of anisotropic behavior as well as hardening behavior based on micromechanical quantities in combination with a spectral solver is the focus of this study. A deep drawing steel as well as two different aluminum alloys are investigated. Prediction capabilities of the proposed modeling strategy are discussed and the benefits of the micromechanical model are highlighted. Further, a comparison of the crystal plasticity (CP) results with the well established macroscopic model YLD2000-2d underlines the importance...

A backup orientation system based on inverse problems technique

Aleksey V. NENAROKOMOV, Evgeny V. CHEBAKOV, Irina V. KRAINOVA, Dmitry L. REVIZNIKOV & Alena V. MORZHUKHINA

Use of the higher-order plate theory of I. N. Vekua type in problems of dynamics of heterogeneous plane waveguides

O.V. Egorova, L.N. Rabinskiy & S.I. Zhavoronok
The dynamics of elastic plane waveguides is studied on the basis of the extended formulation of the plate theory of N^th order. The plate model is based on the Lagrangian formalism of analytical dynamics combined with the dimensional reduction approach and the biorthogonal expansion of the spatial distribution of the displacement. The boundary conditions shifted from the faces onto the base plane are interpreted as constraints for the variational formulation of two-dimensional plate models. The...

Characteristics of Vibrating Composite Stiffened Hypars with Cut-Out at Different Modes

Sarmila SAHOO

Evaluation of Measured Strain Responses to in Situ Vehicular Loading for Typical Asphalt Pavements

Chuan XIAO

Cross-diffusion Effects on MHD Mixed Convection over a Stretching Surface in a Porous Medium with Chemical Reaction and Convective Condition

Marimuthu BHUVANESWARI, Sheniyappan ESWARAMOORTHI, Sivanandam SIVASANKARAN & Ahmed Kadhim HUSSEIN

The Influence of High-Strength Bolts Stiffening on Flange Connection Behaviour

Izabela MAJOR, Maciej MAJOR & Krzysztof KULIŃSKI
Flange connections can commonly be seen in advertising board structures, which are subjected to wind loading. Depending on the structure’s geometry, additional torsion forces should be taken into account. In this paper the static behaviour of a flange connection with highstrength bolts under torsion load has been discussed. The numerical analysis concerns two cases: a flange connection subjected only to a high-strength bolts prestressing load and a flange connection subjected to both – bolts prestressing...

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...

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...

Horizontally polarized shear waves in stratified anisotropic (monoclinic) media

A.V. ILYASHENKO & S.V. KUZNETSOV

NURBS-based optimization of natural frequencies for bidirectional functionally graded beams

N.I. KIM, T.A. HUYNH, Q. X. LIEU & J. LEE

On 3D symmetrical thermoelastic anticrack problems

A. KACZYŃSKI

Model order reduction for a flow past a wall-mounted cylinder

W. STANKIEWICZ, K. KOTECKI, M. MORZYŃSKI, R. ROSZAK & W. SZELIGA

Some considerations of fundamental solution in micropolar thermoelastic materials with double porosity

R. KUMAR, R. VOHRA & M.G. GORLA

Numerical study of a turbulent hydrogen flame in oxy-combustion regimes

A. WAWRZAK & A. TYLISZCZAK

Book Review: Dr. Karl-Eugen Kurrer, The History of the Theory of Structures. Searching for Equilibrium

Herbert MANG

Multi-Scale Numerical Analysis of the Effect of Microstructural Features on the Mechanical Behavior of Polycrystalline Ti-6Al-4V Alloy

Fatna BENMESSAOUD, Vincent VELAY, Mohammed CHEIKH, Vanessa VIDAL, Christine BOHER & Farhad RÉZAÏ-ARIA
The present work aims to model the influence of microstructural features of Ti-6Al-4V titanium alloy on its mechanical behavior. A multi-scale approach based on crystal plasticity is considered. The elasto-viscoplastic constitutive equations of Meric-Cailletaud are modified to take into consideration the effect of the grain size by introducing the Hall-Petch relationship at the local scale. This modified model is coupled with finite element calculations under small strain assumption to simulate the monotonic mechanical behavior of...

Analytical and Numerical Studies of an Unsymmetrical Sandwich Beam – Bending, Buckling and Free Vibration

Krzysztof MAGNUCKI, Ewa MAGNUCKA-BLANDZI, Jerzy LEWIŃSKI & Szymon MILECKI
The subject of the paper is an unsymmetrical sandwich beam. The thicknesses and mechanical properties of the beam faces are different. Mathematical model of the beam is formulated based on the classical broken-line hypothesis. The equations of motions of the beam is derived on the ground of the Hamilton’s principle. Bending, buckling and free-vibration are studied in detail for exemplary unsymmetrical structure of the beam. The values of deflection, critical force and natural frequency are...

An optimal design of thermal protection based on materials morphology

Margarita O. SALOSINA, Oleg M. ALIFANOV & Aleksey V. NENAROKOMOV

In Memoriam – Professor Erwin Stein

Mieczysław KUCZMA

Registration Year

  • 2019
    129

Resource Types

  • Data Paper
    129

Affiliations

  • Poznań University of Technology
    4
  • Tabor (Poland)
    3
  • Phetchabun Rajabhat University
    2
  • AGH University of Science and Technology
    2
  • Cracow University of Technology
    1
  • Dorodnitsyn Computing Centre
    1
  • China University of Mining and Technology
    1
  • Lublin University of Technology
    1
  • Przemysłowy Instytut Motoryzacji
    1
  • Jan Grodek State Vocational Academy in Sanok
    1