Simulation of stress and strain analysis on a delimbing knife with replaceable cutting edge

Melicherčík, Ján; Krilek, Jozef; Harvánek, Pavol

doi:10.15376/biores.15.2.3799-3808

Cited by 8 publications

(8 citation statements)

References 5 publications

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“…Using the finite element method (FEM), the analysis was carried out in Creo simulate. The authors (Mikleš 2012;Hatton et al 2017;Melicherčík et al 2020) have employed this method in their contributions as well.…”

Section: Resultsmentioning

confidence: 99%

Design solution for a device to determine the energy consumption of sawing wood with chain saws

Kuvik,

Krilek,

Kováč

et al. 2024

BioRes

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Cutting wood chips is one of the common work procedures in the course of processing wood with a saw chain. This paper presents the conceptual design of the device and the design of the device for determining the energy demand of such a process. The preparation is designed with the given parameters to achieve the most realistic conditions for sawing wood. It must contain the original cutting device from the STIHL MS 261 chainsaw. It consists of several calculations to determine the cutting moment and the loaded points of the preparation, which define the possible place of damage. In the conceptual design, calculations for cutting force Fr = 924 N and tensile force Fn = 290 N are processed in the work. From the calculated forces, it is possible to determine the resulting stress at the attachment or critical points. For comparison, a finite element method analysis was created in Creo Parametric. The results of the analysis confirm the appropriate selection of material and parameters for the application of the preparation to the test device. The resulting voltages, corresponding to a maximum value of 132 MPa, are negligible for this type of preparation in terms of safety and durability.

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Section: Resultsmentioning

confidence: 99%

Design solution for a device to determine the energy consumption of sawing wood with chain saws

Kuvik,

Krilek,

Kováč

et al. 2024

BioRes

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show abstract

“…Using the size and direction of the cutting forces together with the boundary conditions, it was possible to implement a simulation, in the evaluation of which the program includes the action of the gravitational force, as well as the size of the centrifugal force for the specified cutting conditions. The results give an approximate idea of how big stresses can act on individual parts of the saw blade from the point of view of theory and practice [13][14][15][16].…”

Section: Resultsmentioning

confidence: 99%

Analysis of Cutting Forces at Transverse Sawing of Wood with SK and HSS Saw Blades

Krilek¹,

Melicherčík²,

Kuvik³

et al. 2023

Preprint

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This research deals with the processing of wood using a circular saw, which is associated with several risks and factors that affect the wood splitting process. One of them is the wear of the teeth of the saw blade and the change in the size of the cutting forces. The aim of this study is to compare real measured values and theoretical values when processing Norway Spruce wood, using two types of saw blades SK and HSS with a diameter of 600 mm and the number of teeth 54 and 56. Experimental measurements were carried out on a special test device with the possibility of moving the tested wood into the cutting devices and a simple saw blade replacement system. The results of the contributions show significant differences, based on defined factors, which are supported by FEM analysis of cutting forces in the process of cutting wood - when changing the design of the saw blade. The results of the experiment show that the cutting conditions (cutting speed, feed speed) do not have a significant effect on the size of the cutting forces. The theoretical and real stress values for HSS discs ranged from 14 to 22 MPa. Significantly larger differences were recorded for discs with SK, where the real values of the maximum stresses were around 14 MPa and the theoretical ones around 25 MPa. When cutting spruce with a disc with SK slices, the maximum values of the the-oretical cutting forces were in the range of 76 to 94 N and the maximum values of the measured cutting forces were in the range of 40 to 44 N.

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“…The analysis was performed in Solidworks professional 2019 (Profesinal 2019, Dassault Systèmes, Vélizy-Villacoublay, France) simulations using the finite element method (FEM). This method was also used by the authors in their previous contributions (Mikleš 2012;Hiesl et al 2015;Hatton et al 2017;Mederski et al 2016Mederski et al , 2018Melicherčík et al 2020). The larger diameter hole is firmly welded to the entire arm, and therefore a wedge-type bond, and thus a stationary bearing, was used.…”

Section: Resultsmentioning

confidence: 99%

“…The individual parameters set during the stress analysis were set according to the technical parameters of the material, as well as the Young's module and the post number. The basic parameters were used in the same way as in the simulations published by other authors (Mederski et al 2018;Melicherčík et al 2020).…”

Section: Resultsmentioning

confidence: 99%

Innovative solutions for increasing the service life of cutting head components using finite element method analysis

Kováč

Melicherčík

Krilek

et al. 2022

BioRes

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Chipless tree cutting is increasingly becoming more popular because of its low weight and greater throughput due to the small dimensions of the entire cutting head. This paper is focused on the design of the crank plate of the cutting mechanism of a chipless cutting head. It was necessary to calculate the magnitude of the force required to cut the tree in the direction perpendicular to the growth of the tree fibers. In addition, the tree and cutting mechanism parameters were specified. Due to the size of the cutting force, it was possible to further deduce the amount of the discharge force from the linear motor that directly acts on the opening of the crank plate. After finite element method analysis, it was found that the crank plate was undersized and it was necessary to increase its thickness from 15 mm to 30 mm, which eliminated the problem of plastic deformation.

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Simulation of stress and strain analysis on a delimbing knife with replaceable cutting edge

Cited by 8 publications

References 5 publications

Design solution for a device to determine the energy consumption of sawing wood with chain saws

Design solution for a device to determine the energy consumption of sawing wood with chain saws

Analysis of Cutting Forces at Transverse Sawing of Wood with SK and HSS Saw Blades

Innovative solutions for increasing the service life of cutting head components using finite element method analysis

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