Finite element analysis of spiral strands with different shapes subjected to axial loads

The paper presents the results of a numerical analysis of the stress-strain state of a rope strand with linear contact under tension and torsion loading conditions. Calculations are carried out using the ANSYS software package. Different approaches to calculation of the stress-strain state of ropes are reviewed, and their advantages and deficiencies are considered. The analysis of the obtained results leads us to the conclusion that the proposed method can be used in engineering calculations.

Section: Introductionmentioning

confidence: 97%

“…Assume that a rope is twisted with torque M, and its ends are fixed to prevent axial displacement (φ = 0): (4) This type of loading is known as pure torsion of a rope. Coefficient d 22 represents the stiffness of the rope at pure torsion.…”

Section: Examplementioning

confidence: 99%

Numerical Analysis of the Stress-Strain State of a Rope Strand With Linear Contact Under Tension and Torsion Loading Conditions

Kalentev

Václav

Božek

et al. 2017

“…FEM model was validated in experimental tests [2,4,5,6,7,16,17,18]. The C-section profile used during the experimental tests and the discrete model is shown in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

Effect of Eccentricity of Load on Critical Force of Thin-Walled Columns CFRP

Wysmulski¹,

Král²

2017

The subject of study was a thin-walled C-section made of carbon fiber reinforced polymer (CFRP). Column was subjected to eccentric compression in the established direction. In the computer simulation, the boundary conditions were assumed in the form of articulated support of the sections of the column. Particular studies included an analysis of the effects of eccentricity on the critical force value. The research was conducted using two independent research methods: numerical and experimental. Numerical simulations were done using the finite element method using the advanced system Abaqus ® . The high sensitivity of the critical force value corresponding to the local buckling of the channel section to the load eccentricity was demonstrated.

“…(1) where Cη is an empirical coefficient, L is a linear scale [m] and ρ is density [kg m -3 ]. The equation for the turbulent energy transport is: (2) and the model transport equation for the dissipation rate is expressed as below: (3) where U is the velocity vector [m s -1 ], t is time [s], x is direction [m], P k is the production of turbulent kinetic energy, η is dynamic viscosity, and C ε1 and σ ε are constants.…”

Section: Description Of the Applied Mathematical Modelsmentioning

confidence: 99%

Verifying the Prediction Result Reliability Using k-ε, Eddy Dissipation, and Discrete Transfer Models Applied on Methane Combustion Using a Prototype Low-Pressure Burner

Honus¹,

Pospíšilík²,

Jursová³

et al. 2017

The article aims to verify the accuracy of a method to simulate the combustion chamber with a low-pressure prototype burner equipped with a specific "mixing element" and air baffle. The burner has an output of 4 kW and combusts methane. In detail, the article evaluates the accuracy of the final courses of temperatures and CO concentrations in the combustion chamber, which were obtained having combined the mathematical models k-ε, Eddy Dissipation and Discrete Transfer. CFD software CFX was used for the solution and visualisation of the results. The verification measurements imply that the final course of temperature plotted on the vertical axis of the combustion chamber differs from the real course by +21.7% on average. The predicted CO concentrations are relatively satisfactory in the chamber locations with lower temperatures -at the combustion chamber outlet the deviation from the measured value was +31.8%. Overall, the applied method may be considered acceptable to simulate the thermal field in a combustion chamber with the described burner.