scholarly journals Mechanical analysis of vibratory conveyor mechanism

2018 ◽  
Vol 226 ◽  
pp. 01019
Author(s):  
Yerlan Yeleukulov ◽  
Alfiya Atalykova ◽  
Algazy Zhauyt ◽  
Zhubanyshbay Abdimuratov ◽  
Saltanat Yussupova ◽  
...  
Keyword(s):  
Strain Energy ◽  
Material Handling ◽  
Graphical Representation ◽  
Mechanical Analysis ◽  
Elastic Base ◽  
Mode Of Operation ◽  
Optimum Material ◽  
Energy Installation ◽  
Frequency Excitation ◽  
Vibratory Conveyor

The paper describes some of the basics of kinematics and dynamics of vibratory conveyor drive. Featured are dynamic modes of material that is being transported. Presented are the optimum material handling, and most rational mode. Introducing the empirical dependence transport speed as a function of angle bending conveyor, amplitude of oscillation of the transport container, the oscillation frequency excitation angle at which operates the actuating force and the coefficient mode of operation of the conveyor. Featured are some of the drive vibratory conveyors, and especially the operation of electromagnetic vibratory conveyor. In this paper is studied a vibratory conveyor that is placed on an elastic base. Using the closed contours method it was determined the system that needs to be solved to obtain graphical representation for the generalized coordinates determining the position of the mechanical system elements. The shaking conveyor represents the chase hanged or supported to the fixed section. The chase commits oscillating motions hereupon the cargo which is in the chase, migrates concerning to the chase. The nature of the flow and its parameters are determined by the nature of the oscillating committed by the chase. Justifying the dynamic parameters of the vibratory conveyor and a study of the strain-energy. Installation causes fluctuations fixed tray. Uniformly distributed load on the tray acts in each element of the mechanism. On the basis of the program MSC Adams investigated the strain-energy and kinetic-energy of each link mechanism with results and calculations.

scholarly journals Dynamic force analysis of a six-link planar mechanism

2018 ◽  
Vol 251 ◽  
pp. 04028
Author(s):  
Yertugan Umbetkulov ◽  
Yerlan Yeleukulov ◽  
Alfiya Atalykova ◽  
Gulbarshyn Smailova ◽  
Gulmira Iskakova ◽  
...  
Keyword(s):  
Mechanical System ◽  
Graphical Representation ◽  
Elastic Base ◽  
Design Solution ◽  
Dynamic Force ◽  
Force Analysis ◽  
Generalized Coordinates ◽  
Distributed Load ◽  
Vibratory Conveyor ◽  
Fixed Section

In this paper is studied a vibratory conveyor that is placed on an elastic base. Using the closed contours method it was determined the system that needs to be solved to obtain graphical representation for the generalized coordinates determining the position of the mechanical system elements. The shaking conveyor represents the chase hanged or supported to the fixed section. The chase commits oscillating motions hereupon the cargo which is in the chase, migrates concerning to the chase. The nature of the flow and its parameters are determined by the nature of the oscillating committed by the chase. Installation causes fluctuations fixed tray. Uniformly distributed load on the tray acts in each element of the mechanism. A proper dynamic model has been developed within MSC ADAMS and Maple 18. Simulation tests have been carried out and results are discussed to validate the proposed design solution.

Research on Thermal Mechanical Properties of Rubber Like Materials Based on Numerical Simulation

2011 ◽  
Vol 704-705 ◽  
pp. 811-816
Author(s):  
Jian Bin Sang ◽  
Wen Ying Yu ◽  
Bo Liu ◽  
Xiao Lei Li ◽  
Tie Feng Liu
Keyword(s):  
Finite Element ◽  
Energy Function ◽  
Strain Energy ◽  
Strain Energy Function ◽  
Mechanical Analysis ◽  
Nonlinear Finite Element ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Rubber Seal ◽  
Thermal Mechanical Analysis

This paper start with a discussion on various types of strain energy functions of rubber like materials. Theoretical analysis based on the strain energy function given in by Y.C.Gao in 1997 is proposed. The material parameters of strain energy function were curve-fitted from the uniaxial tensile test. The selected constitutive relation of rubber like materials was implemented into a finite element code MSC.Marc as a user material subroutine to analyze the thermal and mechanical behavior of rubber seal under the plane strain conditions. Contact force and distribution of the contact stress between lip seal and shaft are analyzed and coupled thermal mechanical analysis of rubber seal was proposed. The contact pressure distribution is readily obtainable from the nonlinear finite element analysis and the coupled thermal mechanical analyses results indicate that the thermal stress only have minor influence on the deformed shape of rubber seal, which will be a useful technique for predicting the properties of rubber seal and providing reference for engineering design. Keywords:rubber like materials, nonlinear finite element, contact analysis, thermal mechanical analysis

Mechanical Analysis of Heterogeneous, Atherosclerotic Human Aorta

1998 ◽  
Vol 120 (5) ◽  
pp. 602-607 ◽  
Author(s):  
D. Beattie ◽  
C. Xu ◽  
R. Vito ◽  
S. Glagov ◽  
M. C. Whang
Keyword(s):  
Mechanical Properties ◽  
Cross Sections ◽  
Strain Energy ◽  
Vascular Wall ◽  
Mechanical Analysis ◽  
Human Aorta ◽  
Stress And Strain ◽  
Optimization Strategy

An experimental technique was developed to determine the finite strain field in heterogeneous, diseased human aortic cross sections at physiologic pressures in vitro. Also, the distributions within the cross sections of four histologic features (disease-free zones, lipid accumulations, fibrous intimal tissue, and regions of calcification) were quantified using light microscopic morphometry. A model incorporating heterogeneous, plane stress finite elements coupled the experimental and histologic data. Tissue constituent mechanical properties were determined through an optimization strategy, and the distributions of stress and strain energy in the diseased vascular wall were calculated. Results show that the constituents of atherosclerotic lesions exhibit large differences in their bilinear mechanical properties. The distributions of stress and strain energy in the diseased vascular wall are strongly influenced by both lesion structure and composition. These results suggest that accounting for heterogeneities in the mechanical analysis of atherosclerotic arterial tissue is critical to establishing links between lesion morphology and the susceptibility of plaque to mechanical disruption in vivo.

Effect of microstructural phases on thermo-mechanical analysis of ductile Cu–Al–Mn–Ni memory alloys for structural applications

2020 ◽  
Vol 10 (8) ◽  
pp. 1337-1345
Author(s):  
Tareq Manzoor ◽  
Muhammad Zafar ◽  
Muddassir Ali ◽  
Mahmood Saleem ◽  
Woo Young Kim
Keyword(s):  
Experimental Investigation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Strain Energy ◽  
Mechanical Analysis ◽  
Absorption Capacity ◽  
Damping Properties ◽  
Structural Applications ◽  
Nickel Addition ◽  
Compositional Variations

In this present study, the particulars of an experimental investigation on the effect of nickel addition on microstructural, strain recovery and strain absorption capacity of ternary (Cu–Al–Mn) shape memory alloys has been deliberated. Six dissimilar compositions with varying amounts of Ni in (Cu–Al–Mn) shape memory alloys have been synthesized and investigated to measure their potential for structural applications. Microstructural and detailed phase analysis has been studied. Additions of Ni have enhanced the tensile strength of these alloys. These compositional variations have influenced shape memory and damping properties in from of dissipated strain energy as well as the super elasticity of the alloys.

Effect of Temperature on Elasticity of Silicon Nanowires

2011 ◽  
Vol 483 ◽  
pp. 526-531
Author(s):  
Jing Wang
Keyword(s):  
Young’S Modulus ◽  
Silicon Nanowires ◽  
Strain Energy ◽  
Young's Modulus ◽  
Silicon Nanowire ◽  
Negative Temperature ◽  
Lattice Parameter ◽  
Mechanical Analysis ◽  
Effect Of Temperature ◽  
Continuum Approach

A semi-continuum approach is developed for mechanical analysis of a silicon nanowire, which captures the atomistic physics and retains the efficiency of continuum models. By using the Keating model, the strain energy of the nanowire required in the semi-continuum approach is obtained. Young’s modulus of the silicon (001) nanowire along [100] direction is obtained by the developed semi-continuum approach. Young’s modulus decreases dramatically as the size of a silicon nanowire width and thickness scaling down, especially at several nanometers, which is different from its bulk counterpart. The semi-continuum approach is extended to perform a mechanical analysis of the silicon nanowire at finite temperature. Taking into account the variations of the lattice parameter and the bond length with the temperature, the strain energy of the system is computed by using Keating anharmonic model. The dependence of young’s modulus of the nanowire on temperature is predicted, and it exhibits a negative temperature coefficient.

The Study on Damage Failure of Pipeline under Flood Using Entropy Identification Method

2013 ◽  
Vol 577-578 ◽  
pp. 565-568
Author(s):  
Miao Liu ◽  
Zhi Yin Wang ◽  
Xin Wang
Keyword(s):  
Information Entropy ◽  
Dynamic Load ◽  
Strain Energy ◽  
Mechanical Response ◽  
Mechanical Analysis ◽  
Buried Pipeline ◽  
Analysis Model ◽  
Energy Entropy ◽  
Searching Method ◽  
Different Levels

The buried pipeline will be spanning and subject to dynamic load under flooding, which may induce a damage failure of pipeline. In this paper, a mechanical analysis model of spanning pipelines is established under different levels of flood load. The mechanical response and the information entropy based on strain energy of the pipeline are calculated through global analytical searching method. In addition, the recognition of damage failure of pipeline is achieved according to the value of strain energy entropy of pipeline under different flood levels. The study shows that the strain energy entropy varies with the change of deformation reflects the damage failure feature of pipeline well, which can be used as a new method to identify the failure of pipeline.

SIMPA: A Graphic Simulator for the CAD of Parallel Manipulators

1992 ◽  
Author(s):  
Clément M. Gosselin ◽  
Simon Laverdière ◽  
Jean Côte
Keyword(s):  
Graphical Representation ◽  
Mechanical Design ◽  
Parallel Manipulators ◽  
Mechanical Analysis ◽  
Complex Issue ◽  
Planar Manipulators ◽  
Stiffness Properties ◽  
Contour Plots ◽  
Workspace Optimization

Abstract This paper presents a graphic simulation environment which can be used as an aid for the design of parallel manipulators. Both planar and spatial parallel manipulators can be treated with the simulator. Fast algorithms for the determination of the workspace are implemented. Therefore, sections of the workspace — with their boundaries — can be plotted interactively and their volume or area estimated very accurately. Moreover, contour plots of design criteria such as dexterity, stiffness or conditioning can be superimposed on these plots in order to provide the user with a graphical representation of the behavior of these properties over the workspace. Singularity loci can also be plotted for planar manipulators. The simulator is implemented on a SUN SPARC Station and uses the SUNPHIGS graphics library. The mechanical design of parallel manipulators is a complex issue which involves a detailed mechanical analysis. Indeed, parallel manipulators generally exhibit good stiffness properties but usually have a rather limited workspace. Furthermore, they are known to suffer from singularities for which the end-effector becomes uncontrollable. Problems related to workspace optimization and stiffness are therefore crucial in the context of design of parallel manipulators and the simulation package presented here is a very useful tool for the designer.

Enhancement of Contrast in the CEM and STEM Using Bumpy Specimens and Employing the “Dappled Field” Mode of Operation

1974 ◽  
Vol 32 ◽  
pp. 552-553 ◽  
Author(s):  
L. Gandolfi ◽  
J. Reiffel
Keyword(s):  
Operating Mode ◽  
Scanning Transmission Electron Microscope ◽  
Dark Field ◽  
Specimen Preparation ◽  
Field Mode ◽  
Preparation Methods ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Mode Of Operation ◽  
Scanning Transmission

Calculations have been performed on the contrast obtainable, using the Scanning Transmission Electron Microscope, in the observation of thick specimens. Recent research indicates a revival of an earlier interest in the observation of thin specimens with the view of comparing the attainable contrast using both types of specimens.Potential for biological applications of scanning transmission electron microscopy has led to a proliferation of the literature concerning specimen preparation methods and the controversy over “to stain or not to stain” in combination with the use of the dark field operating mode and the same choice of technique using bright field mode of operation has not yet been resolved.

High-Voltage Scanning Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 6-7
Author(s):  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Scanning Transmission Electron Microscopy ◽  
Wave Optics ◽  
Contrast Effects ◽  
Transmission Electron ◽  
Mode Of Operation ◽  
Scanning Transmission ◽  
Types Of Information ◽  
Voltage Scanning

The comparison of scanning transmission electron microscopy (STEM) with conventional transmission electron microscopy (CTEM) can best be made by means of the Reciprocity Theorem of wave optics. In Fig. 1 the intensity measured at a point A’ in the CTEM image due to emission from a point B’ in the electron source is equated to the intensity at a point of the detector, B, due to emission from a point A In the source In the STEM. On this basis it can be demonstrated that contrast effects In the two types of instrument will be similar. The reciprocity relationship can be carried further to include the Instrument design and experimental procedures required to obtain particular types of information. For any. mode of operation providing particular information with one type of microscope, the analagous type of operation giving the same information can be postulated for the other type of microscope. Then the choice between the two types of instrument depends on the practical convenience for obtaining the required Information.

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