Motion Simulation of a Boat Shaped Grass Burying Rotary Tilling Blade Roller by Pro/E

2013 ◽  
Vol 325-326 ◽  
pp. 204-209
Author(s):  
Zhao Dong Li ◽  
Guo Zhong Zhang ◽  
Zhou Yong ◽  
Yuan Shuang Lu ◽  
Jian Bo Zhai ◽  
...  
Keyword(s):  
Significant Influence ◽  
Rotational Speed ◽  
Simulation Analysis ◽  
Virtual Assembly ◽  
Structure And Function ◽  
Structure Design ◽  
Gyration Radius ◽  
Motion Simulation ◽  
Forward Speed ◽  
And Function

his paper adopted Pro/E5.0 to do parametric structure design and virtual assembly for the whole boat shaped grass burying rotary tilling machine. The structure and function of grass burying rotary tilling blade roller was elaborated in the paper. This paper mainly did simulation analysis about the motion track of grass burying rotary tilling blade roller. The results showed that the forward speed of the machine had significant influence on the motion track of blade roller while at the certain rotational speed and gyration radius.

Kinematics Simulation and Experimental Study of CVT with Diclinic Cam Plate Synchronous Revolution and Internal Power Shunt

2013 ◽  
Vol 706-708 ◽  
pp. 1413-1417
Author(s):  
Yuan Li ◽  
Jie Yue ◽  
Qiu Bo Huang ◽  
Yan Ping Sun
Keyword(s):  
Experimental Study ◽  
Simulation Analysis ◽  
Virtual Assembly ◽  
Structure Design ◽  
Displacement Velocity ◽  
Time Dependent ◽  
Acceleration Time ◽  
Kinematics Simulation

Established the precise model and completed the virtual assembly of CVT with diclinic cam plate synchronous revolution and internal power shunt application of Pro/E software basing on the transmission principle. Obtained the displacement, velocity and acceleration time-dependent curves of nine plungers centroid through the simulation of transmission operation, based on the simulation analysis gaining that the transmission does not exist in dynamic and static interference, and the structure design of CVT is reasonable. Completed the processing of CVT manufacturing, experiments are carried out to verify the simulation analysis of the transmission of real.

The Structure Design and Motion Simulation for Drilling Jumbo Based on UG

2012 ◽  
Vol 580 ◽  
pp. 325-328
Author(s):  
Gen Li Shan ◽  
Yun Guang Zhou ◽  
Peng Hui Huang
Keyword(s):  
Research Methods ◽  
Calculated Data ◽  
Virtual Assembly ◽  
Structure Design ◽  
Operating Principle ◽  
Motion Simulation ◽  
Mechanical Structure ◽  
New Research

UG software is used to design the mechanical structure of a drilling jumbo, which describes the overall structure, structure and operating principle of the key components. The virtual assembly and motion simulation have been done under the UG environment, the drilling jumbo’s booms can find the position of the holes through the motion simulation, the accuracy of the calculated data is proved and the design period is also shorten, solve the interference of the two booms, which also provides new research methods and basis for CNC drilling jumbo.

scholarly journals Development and Evaluation of Low-Damage Maize Snapping Mechanism Based on Deformation Energy Conversion

2021 ◽  
Vol 11 (24) ◽  
pp. 12158
Author(s):  
Zhilong Zhang ◽  
Aijun Geng
Keyword(s):  
Energy Conversion ◽  
Rotational Speed ◽  
Performance Test ◽  
Simulation Analysis ◽  
Deformation Energy ◽  
Forward Speed ◽  
Spring Stiffness ◽  
Test Rig ◽  
Damage Rate ◽  
The Impact

Reducing ear damage is the key to improving the quality of maize harvests. In order to reduce the impact and damage of the ear caused by the ear snapping mechanism, this paper proposes a method to convert ear deformation energy during collision into elastic potential energy in the ear snapping mechanism. According to the above method, a low-damage maize snapping mechanism was designed. In order to verify the feasibility of energy conversion in reducing damage, the dynamic model of the contact between the ear and the snapping plate was established, and a dynamic simulation analysis was carried out based on the finite element method (FEM). In order to obtain better parameters for the improved mechanism, a test rig was established, after which a performance test was carried out on the test rig. The results showed that the primary and secondary order that affected the ear damage rate was the rotational speed of the snapping roller, the spring stiffness and the forward speed. The data processing software Design Expert was used to optimize the parameters, it was concluded that when the rotational speed was 805 r·min−1, the forward speed was 1.29 m·s−1, the spring stiffness was 33.5 N·mm−1, the model predicted that the ear damage rate was 0.023%. Therefore, this paper could provide further reference for research into maize low-damage ear snapping technology.

Research on Motion Simulation Analysis of Rotary Parts Based on Solidworks

2013 ◽  
Vol 753-755 ◽  
pp. 867-871
Author(s):  
Qing Yu Ye
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Simulation Analysis ◽  
Reference Value ◽  
Virtual Assembly ◽  
Analysis Data ◽  
Motion Simulation ◽  
Practical Application ◽  
Rotary Parts ◽  
Motion Parameters

This paper introduces the practical application of the Solidworks motion simulation module, performs simulation analysis of rotary parts, and realizes the virtual assembly of the assembly. Then, we output and analyze the charts of motion parameters, in order to provide analysis data for practical state. In the meanwhile, we perform stress analysis of rotary parts by using finite element module of Solidworks, so that it can provide a certain reference value for practical running of rotary parts.

Structure Design of Manipulator for Pot Seedling Transplanter and Simulation Analysis

2014 ◽  
Vol 670-671 ◽  
pp. 829-833 ◽  
Author(s):  
Jin Feng Sun ◽  
Xiao Yu Li ◽  
Wen Jun Li ◽  
Yong Zhang Zhu ◽  
Jun Wang ◽  
...  
Keyword(s):  
Yield Strength ◽  
Alloy Steel ◽  
Design Theory ◽  
3D Model ◽  
Simulation Analysis ◽  
Mechanical Design ◽  
Virtual Assembly ◽  
Structure Design ◽  
Maximum Pressure ◽  
Pneumatic Drive

In order to solve the problem of seedling damaged and inefficiency of pot seedling trasplanter, the manipulator for pot seedling transplanter came into being. The three thin finger structure was selected for the manipulator, which could weaken the resistance and leakage by employing pneumatic drive. SolidWorks software was used to establish the 3D model and virtual assembly, to analyze force on the finger on the basis of the mechanical design theory. The strength of the finger part was checked in the SolidWorks SimulationXpress module, the maximum pressure of the finger was 50040656 N/m2, which was far less than the yield strength of the alloy steel finger 620422016N/m2. The results showed that the manipulator was highly practical with reasonable structure and productivity-enhancing ability.

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

Osseointegration interface of calcified bone and endosseous implants

1992 ◽  
Vol 50 (2) ◽  
pp. 1096-1097
Author(s):  
K.E. Krizan ◽  
J.E. Laffoon ◽  
M.J. Buckley
Keyword(s):  
Structure And Function ◽  
Titanium Implants ◽  
En Bloc ◽  
Endosseous Implants ◽  
Ultrastructural Studies ◽  
The Past ◽  
Cacodylate Buffer ◽  
One Year ◽  
And Function

With increase use of tissue-integrated prostheses in recent years it is a goal to understand what is happening at the interface between haversion bone and bulk metal. This study uses electron microscopy (EM) techniques to establish parameters for osseointegration (structure and function between bone and nonload-carrying implants) in an animal model. In the past the interface has been evaluated extensively with light microscopy methods. Today researchers are using the EM for ultrastructural studies of the bone tissue and implant responses to an in vivo environment. Under general anesthesia nine adult mongrel dogs received three Brånemark (Nobelpharma) 3.75 × 7 mm titanium implants surgical placed in their left zygomatic arch. After a one year healing period the animals were injected with a routine bone marker (oxytetracycline), euthanized and perfused via aortic cannulation with 3% glutaraldehyde in 0.1M cacodylate buffer pH 7.2. Implants were retrieved en bloc, harvest radiographs made (Fig. 1), and routinely embedded in plastic. Tissue and implants were cut into 300 micron thick wafers, longitudinally to the implant with an Isomet saw and diamond wafering blade [Beuhler] until the center of the implant was reached.

Use of human autoantibodies and immunoelectron microscopy to study structure and function of the nucleolus and nuclear bodies

1992 ◽  
Vol 50 (1) ◽  
pp. 506-507
Author(s):  
Robert L. Ochs
Keyword(s):  
Electron Microscopy ◽  
Structure And Function ◽  
Nuclear Bodies ◽  
Nuclear Interior ◽  
Coiled Bodies ◽  
Interchromatin Granules ◽  
And Function ◽  
Conventional Electron Microscopy ◽  
Perichromatin Granules ◽  
Perichromatin Fibrils

By conventional electron microscopy, the formed elements of the nuclear interior include the nucleolus, chromatin, interchromatin granules, perichromatin granules, perichromatin fibrils, and various types of nuclear bodies (Figs. 1a-c). Of these structures, all have been reasonably well characterized structurally and functionally except for nuclear bodies. The most common types of nuclear bodies are simple nuclear bodies and coiled bodies (Figs. 1a,c). Since nuclear bodies are small in size (0.2-1.0 μm in diameter) and infrequent in number, they are often overlooked or simply not observed in any random thin section. The rat liver hepatocyte in Fig. 1b is a case in point. Historically, nuclear bodies are more prominent in hyperactive cells, they often occur in proximity to nucleoli (Fig. 1c), and sometimes they are observed to “bud off” from the nucleolar surface.

Depletion and Reconstitution of Active E. Coli Ribosomes

1975 ◽  
Vol 33 ◽  
pp. 640-641
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Protein Biosynthesis ◽  
Large Subunit ◽  
High Resolution Electron Microscopy ◽  
Small Subunit ◽  
Structure And Function ◽  
Biologically Active ◽  
Biological Macromolecules ◽  
E Coli ◽  
Resolution Electron ◽  
And Function

Correlations between structure and function of biological macromolecules have been studied intensively for many years, mostly by indirect methods. High resolution electron microscopy is a unique tool which can provide such information directly by comparing the conformation of biopolymers in their biologically active and inactive state. We have correlated the structure and function of ribosomes, ribonucleoprotein particles which are the site of protein biosynthesis. 70S E. coli ribosomes, used in this experiment, are composed of two subunits - large (50S) and small (30S). The large subunit consists of 34 proteins and two different ribonucleic acid molecules. The small subunit contains 21 proteins and one RNA molecule. All proteins (with the exception of L7 and L12) are present in one copy per ribosome.This study deals with the changes in the fine structure of E. coli ribosomes depleted of proteins L7 and L12. These proteins are unique in many aspects.

The Laryngeal Epithelium in Reflux

2011 ◽  
Vol 21 (3) ◽  
pp. 112-117 ◽  
Author(s):  
Elizabeth Erickson-Levendoski ◽  
Mahalakshmi Sivasankar
Keyword(s):  
Laryngopharyngeal Reflux ◽  
Critical Role ◽  
Structure And Function ◽  
Laryngeal Disease ◽  
Health And Disease ◽  
And Function ◽  
The Impact

The epithelium plays a critical role in the maintenance of laryngeal health. This is evident in that laryngeal disease may result when the integrity of the epithelium is compromised by insults such as laryngopharyngeal reflux. In this article, we will review the structure and function of the laryngeal epithelium and summarize the impact of laryngopharyngeal reflux on the epithelium. Research investigating the ramifications of reflux on the epithelium has improved our understanding of laryngeal disease associated with laryngopharyngeal reflux. It further highlights the need for continued research on the laryngeal epithelium in health and disease.

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