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

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 3799-3808
Author(s):  
Ján Melicherčík ◽  
Jozef Krilek ◽  
Pavol Harvánek
Keyword(s):  
Finite Element Method ◽  
Stress Analysis ◽  
Cutting Force ◽  
Woody Plants ◽  
Strain Analysis ◽  
Cutting Edge ◽  
Stress And Strain ◽  
Cutting Knife ◽  
Basic Parameters

This study focused on stress and strain analysis of the cutting force of a branch knife with a replaceable cutting edge. The replaceable edge forms part of the delimbing head, which is applied to the arms of a mechanical harvester working in forestry. Basic parameters of the knife and head of the harvester with the basic calculations necessary to determine the number of knives based on input parameters, such as wood diameter, woody plants, and determination of the cutting force acting on the cutting knife, were examined. Based on the cutting force and the design of the special cutting knife, a stress analysis and a finite element method (FEM) was performed. This study confirmed the correctness of the selected material to produce the delimbing knife, which was designed using a replaceable cutting edge. The output of the stress analysis is reported.

scholarly journals Design of the crusher for plastic and rubber waste produced in automotive industry

2021 ◽  
Vol 49 (3) ◽  
pp. 734-739
Author(s):  
Ján Melicherčík ◽  
Tomáš Kuvik ◽  
Jozef Krilek ◽  
Iveta Čabalová
Keyword(s):  
Cutting Force ◽  
Automotive Industry ◽  
Strain Analysis ◽  
Element Analysis ◽  
Rubber Waste ◽  
The World ◽  
Basic Parameters ◽  
Used Cars ◽  
Final Cutting

According to European Tyre&Rubber Manufacturers' Association (ETRMA), there are about 1 billion cars all over the world. If the interest in cars does not change, the number of cars is going to be increased and in 2030 there is going to be more than 2 billion cars in the world - regardless of whether they will be powered by a petrol engine or a completely different one at that time. Based on the studies, we focused on the design of the crusher whose task is to effectively recover plastic and rubber waste from used cars. The paper describes the stress - strain analysis of the cutting device of the crusher using a defined material for its production. The basic parameters of the crusher were investigated for a determined final cutting force. Based on the cutting force and the designed crusher, a finite element analysis (FEM) was performed confirming the correctness of the selected material for the production of the crusher for the processing waste materials. The basic parameters of the crusher were observed for determination of the final cutting force.

scholarly journals Stress and strain analysis from dynamic loads of mechanical hand using finite element method

2018 ◽  
Vol 352 ◽  
pp. 012017 ◽  
Author(s):  
Iskandar Hasanuddin ◽  
Husaini ◽  
M. Syahril Anwar ◽  
B.Z. Sandy Yudha ◽  
Hasan Akhyar
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain Analysis ◽  
Dynamic Loads ◽  
Stress And Strain ◽  
Mechanical Hand ◽  
Element Method

scholarly journals Approach for multiscale modeling the thermomechanical tool load in gear hobbing

2021 ◽  
Author(s):  
Nico Troß ◽  
Jens Brimmers ◽  
Thomas Bergs
Keyword(s):  
Cutting Force ◽  
Chip Thickness ◽  
Multiscale Model ◽  
Cutting Edge ◽  
Rake Face ◽  
Fe Simulations ◽  
Gear Hobbing ◽  
Input Variables ◽  
The One

AbstractIn this report, an approach is presented how a geometric penetration calculation can be combined with FE simulations to a multiscale model, which allows an efficient determination of the thermomechanical load in gear hobbing. FE simulations of the linear-orthogonal cut are used to derive approximate equations for calculating the cutting force and the rake face temperature. The hobbing process is then simulated with a geometric penetration calculation and uncut chip geometries are determined for each generating position. The uncut chip geometries serve as input variables for the derived equations, which are solved at each point of the cutting edge for each generating position. The cutting force is scaled according to the established procedure of discrete addition of the forces along the cutting edge over all individual cross-section elements. For the calculation of the temperature, an approach is presented how to consider a variable chip thickness profile. Based on this, the temperature distribution on the rake face is calculated. The model is verified on the one hand by cutting force measurements in machining trials and on the other hand by an FE simulation of a full engagement of a hob tooth.

scholarly journals Stress and Strain Analysis of Plywood Seat Shell

2019 ◽  
Vol 70 (1) ◽  
pp. 51-59
Author(s):  
Seid Hajdarević ◽  
Murčo Obućina ◽  
Elmedin Mešić ◽  
Sandra Martinović
Keyword(s):  
Stress Analysis ◽  
Strain Analysis ◽  
Wood Products ◽  
Orthotropic Materials ◽  
Stress And Strain ◽  
Elastic Model ◽  
Layer By Layer ◽  
Element Analysis ◽  
Experimental Stress Analysis ◽  
Linear Elastic

In this paper, the stress and strain analysis of common laminated wood seat shell is performed. Experimental stiffness evaluation is conducted by measuring displacement of the point on the backrest, and experimental stress analysis is carried out by tensometric measuring at the critical transition area from the seat to the backrest. Finite element analysis is carried out layer by layer with a “2D linear elastic model” for orthotropic materials. Good matching is found between numerical and experimental results of displacement. It is also shown that the results of the principal stress in the measurement points of the seat shell compare favourably with experimental data. The applied in-plane stress analysis of each individual veneer is not applicable for interlaminar stress calculations that are a significant factor in curved forms of laminated wood. Curved forms of laminated wood products require more complex numerical analysis, but the method can be used to achieve approximate data in early phase of product design.

Brain Tissue Fragility–A Finite Strain Analysis by a Hybrid Finite-Element Method

1975 ◽  
Vol 42 (2) ◽  
pp. 269-273 ◽  
Author(s):  
S. N. Atluri ◽  
A. S. Kobayashi ◽  
J. S. Cheng
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Strain ◽  
Strain Analysis ◽  
Stress And Strain ◽  
Exposed Surface ◽  
Element Analysis ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element

This paper deals with the finite-strain, finite-element analysis of the states of stress and strain in the vicinity of a blunt indenter applied to the exposed surface of the pia-arachnoid of an anesthetized rhesus monkey.

Metallic Multilayered Materials Produced by Constrained Compression

2016 ◽  
Vol 716 ◽  
pp. 225-231
Author(s):  
Marcin Kwiecień ◽  
Łukasz Lisiecki ◽  
Szymon Bajda ◽  
Janusz Majta ◽  
Michał Krzyżanowski
Keyword(s):  
316L Stainless Steel ◽  
Strain Analysis ◽  
Processing Parameters ◽  
Stress And Strain ◽  
Metallic Materials ◽  
Bonding Quality ◽  
Steel Material ◽  
Stainless Steel Material ◽  
Joining Process

Investigation of the mechanical behaviour of multilayered metallic materials obtained during novel joining technique called Constrained Compression (CC) is presented. 316L stainless steel material was used in CC to achieve multi-layered structure. Microstructural study based on light microscopy was performed focused presumably on the joining areas of the deformed metallic laminate. The qualitative and quantitative assessment of the processing conditions, microstructure development and microhardness distributions showed the possibility of achievement good bonding quality. Experimental study was supported by numerical stress and strain analysis. It has been shown that determination of the optimum processing parameters allowed for improvement of the joining process, which in turn will enable to produce multilayered metallic materials on a larger scale.

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