scholarly journals Development of Multimedia Based on Autodesk Inventor Software on the Concept of Relative Velocity to Increase Students’ Generic Science Skill

2020 ◽  
Vol 3 (2) ◽  
pp. 111
Author(s):  
Ariyano Ariyano ◽  
Amay Suherman ◽  
Handiansyah Akhmadi
Keyword(s):  
Relative Velocity ◽  
Absolute Velocity ◽  
Kinematics And Dynamics ◽  
Symbolic Language ◽  
Logical Consistency ◽  
Kinematic Diagram ◽  
Crank Mechanism ◽  
Language Laws

This research aims to develop autodesk inventor-based multimedia that was designed to increase students’ generic science skill on the application of relative velocity at kinematics and dynamics courses. This study used the mini course method developed by Borg and Gall, including the stage of analysing and planning, developing early product, and validating from the expert and revision the early product. Based on the analysis conducted, it was revealed that there were five indicators that students had difficulties with, including illustrating kinematic diagram, illustrating velocity direction, calculating absolute velocity, illustrating velocity polygon, and calculating velocity based on velocity polygon. Those five indicators were related to six generic science aspects, including modelling, symbolic language, laws of causality, logical consistency, scale awareness, and observation. The developed multimedia consists of nine displays of slider-crank mechanism and eight displays of four-bar mechanisms, using .idw, .iam, and .mp4 formats and has been validated by material and media experts. Based on the judgment from the experts, the inventor-based multimedia was worthy to be applied in the course.

Calculation of kinematics and dynamics of inline piston engines

2021 ◽  
Author(s):  
Mal'donado Val'eho ◽  
Nikolay Chaynov
Keyword(s):  
Higher Education ◽  
Internal Combustion Engines ◽  
Educational Institutions ◽  
Federal State ◽  
Kinematics And Dynamics ◽  
Combustion Engines ◽  
Educational Standards ◽  
State Educational ◽  
Crank Mechanism ◽  
Energy Engineering

The textbook discusses the kinematics and dynamics of inline piston internal combustion engines with axial and deaxial crank mechanism. The necessary material for calculating the forces and moments acting in the engine is given, the balancing of engines, the construction of vector diagrams of pressure on the crankshaft bearings are considered, examples of calculations are given. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying in the field of training "Energy engineering".

A Closed-Form Formalism for Controlled and Hybrid Rigid/Elastic Multibody Systems: Part II — Symbolic Implementation and Applications

1991 ◽  
Author(s):  
Junghsen Lieh ◽  
Imitiaz Haque
Keyword(s):  
Closed Form ◽  
Equations Of Motion ◽  
Structural Flexibility ◽  
Symbolic Language ◽  
Structural Vibrations ◽  
Optimal Control Strategy ◽  
Active Suspensions ◽  
Elastic Multibody Systems ◽  
System Order ◽  
Crank Mechanism

Abstract A program is developed on a DECstation using the symbolic language MAPLE which generates the equations of motion in a closed form and reduces the system order symbolically. A procedure that can make symbolic simplification and linearization is provided. The integration of shape functions is performed symbolically. Both nonlinear and linearized equations of motion with control are established in FORTRAN format. Several models including an elastic vehicle with active suspensions, an elastic robotic manipulator and an elastic slider-crank mechanism with both joint and structural flexibility are generated. Numerical simulation for the active vehicle model using an optimal control strategy is presented. The effect of active suspensions on vehicle and structural vibrations is briefly discussed. A comparison between the nonlinear and linearized robot models is given. Simulation results of the slider-crank mechanism are also presented.

Kinematics of the Generalized Slider-Crank Mechanism

1993 ◽  
Author(s):  
Ian S. Fischer ◽  
Sahidur Rahman
Keyword(s):  
Coordinate Transformation ◽  
Kinematics And Dynamics ◽  
Cylinder Axis ◽  
Dual Number ◽  
Transformation Matrices ◽  
Manufacturing Tolerances ◽  
Newton Raphson ◽  
Raphson Method ◽  
Crank Mechanism

Abstract Dual-number techniques are used to analyze the kinematics and dynamics of the slider crank mechanism generalized to consider the effects of the cylinder axis being offset and non-perpendicular to the crankshaft axis, conditions which result in reciprocating machinery such as engines and compressors from manufacturing tolerances. The kinematics of the mechanism are evaluated with a Newton-Raphson method using dual-number coordinate-transformation matrices which in this work is extended to include mechanisms with spherical joints. Results for various cases are shown and are ready to be used in a study of the dynamics of the generalized slider-crank.

scholarly journals The Mechanical Behavior of a Multispring System Revealing Absurdity in the Relativistic Force Transformation

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Mohammad Javanshiry
Keyword(s):  
Mechanical Behavior ◽  
Relative Velocity ◽  
Kinematics And Dynamics ◽  
Mechanical Motion ◽  
Force Transformation

The mechanical motion of a system consisting of simple springs is investigated from the viewpoint of two inertial observers with a relativistic relative velocity. It is shown that the final displacement of the springs is not measured the same by the observers. Indeed, it is demonstrated that there is an incompatibility between kinematics and dynamics in Einstein’s relativity regarding the force transformation.

Kinematics Analysis of the Crank Mechanism Conveyor Using MSC Adams

2015 ◽  
Vol 816 ◽  
pp. 140-149 ◽  
Author(s):  
Darina Hroncová ◽  
Patrik Šarga
Keyword(s):  
Degrees Of Freedom ◽  
Graphical Method ◽  
Angular Acceleration ◽  
Displacement Velocity ◽  
Kinematics And Dynamics ◽  
Kinematics Analysis ◽  
Analysis Model ◽  
The Individual ◽  
Kinematics Parameters ◽  
Crank Mechanism

The aim of the thesis is the solution of kinematics analysis model of the conveyor with a crank mechanism. For solution is to use a graphical method for determining the kinematics parameters of the individual members of the mechanism. In part kinematics analysis is also used MSC Adams View program that is designed to address the problems of kinematics and dynamics of systems with more degrees of freedom. This program shows the displacement, velocity and acceleration and angular velocity and angular acceleration of members. Finally, the work presents the results with graphic display of parameters such as displacement, velocity and acceleration. Introductory chapters are devoted to general issues kinematics mechanisms and the following chapters are devoted to a particular model of the conveyor mechanism.

A New Method of Integrate Simulation Based on ADAMS and Pro/ENGINEER

2012 ◽  
Vol 229-231 ◽  
pp. 2065-2068
Author(s):  
Gang Lian Zhao ◽  
Yi Jiang ◽  
Yu Jun Chen ◽  
Yan Li Ma
Keyword(s):  
Dynamic Analysis ◽  
Mechanical System ◽  
Experimental Model ◽  
New Method ◽  
Kinematics And Dynamics ◽  
Dynamics Analysis ◽  
Manual Method ◽  
Complex Mechanical System ◽  
Simulation Based ◽  
Crank Mechanism

A new method of integrate simulation for the kinematics and dynamics analysis of complex mechanical system is presented in this paper. This platform of the method is based on Visual Studio 2005, MD ADAMS( Automatic Dynamic Analysis of Mechanical System) R3 and Pro/Engineer Wildfire 4.0. The experimental model is built with Pro/E, and then some functions of Pro/Toolkit are used to export file of parasolid format and coordinates of some specified Datum Points. Finally, the coordinates of these Datum Points are written into a CMD file (Commands file of ADAMS). A slider-crank mechanism is used as a numerical example to demonstrate the application of the method. It is shown that this approach is a much easier, faster than usual manual method especially for complex mechanical system which has a lot of Marker Points and constraints.

The Dynamic Simulation of Engine Slider-Crank Mechanism Based on ANSYS and ADAMS

2013 ◽  
Vol 842 ◽  
pp. 347-350 ◽  
Author(s):  
Li Ni ◽  
Ya Yu Huang ◽  
Chong Kai Zhou
Keyword(s):  
Rigid Body ◽  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Coupled Model ◽  
Dynamics Simulation ◽  
Kinematics And Dynamics ◽  
Kinematics Simulation ◽  
Bias Model ◽  
Simulation Results ◽  
Crank Mechanism

Establishing bias and central entity model of slider-crank mechanism in this paper, then the bias model is imported into the ADAMS for kinematics simulation, and we can get the sliders law of motion. Then using ANSYS and ADAMS jointly to establish the multiple rigid body and the coupled model of slider-crank mechanism, and carrying on kinematics and dynamics simulation analysis to compare the two simulation results. Through build simulation of the coupled model with UG, ANSYS and ADAMS, the result of this calculation is better to reflect the true movement of the mechanism.

Rapid Freezing of Freeze-Etch Specimens

1980 ◽  
Vol 38 ◽  
pp. 752-755
Author(s):  
A. Elgsaeter ◽  
T. Espevik ◽  
G. Kopstad
Keyword(s):  
Low Temperature ◽  
Metal Surface ◽  
Relative Velocity ◽  
Thermal Contact ◽  
High Rate ◽  
Rapid Freezing ◽  
Temperature Decrease ◽  
Freeze Etching

The importance of a high rate of temperature decrease (“rapid freezing”) when freezing specimens for freeze-etching has long been recognized1. The two basic methods for achieving rapid freezing are: 1) dropping the specimen onto a metal surface at low temperature, 2) bringing the specimen instantaneously into thermal contact with a liquid at low temperature and subsequently maintaining a high relative velocity between the liquid and the specimen. Over the last couple of years the first method has received strong renewed interest, particularily as the result of a series of important studies by Heuser and coworkers 2,3. In this paper we will compare these two freezing methods theoretically and experimentally.

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