A Versatile PC-Based Method for the Processing of the Large Matrices

1999 ◽  
Author(s):  
Emil M. Oanta ◽  
Bogdan Nicolescu
Keyword(s):  
Programming Languages ◽  
Computer Aided Design ◽  
High Performance ◽  
Computational Mechanics ◽  
Experimental Mechanics ◽  
Current Application ◽  
Software Applications ◽  
The Matrix ◽  
Aided Design ◽  
High Performance Computers

Abstract In the paper we present a general solution for handling the large matrices. This solution is general because of the wide use of the matrix based approach in problems concerning numerical methods, experimental mechanics, computational mechanics, CFD, computer aided design, economical problems, etc. Some of the major advantages of this solution are: 1. lack of requirements regarding the use of some high-performance computers, the constraints being connected to the size of the hard-disk (at present increasing and being cheaper); 2. Windows operating system may be used but it is not absolutely necessary; 3. it represents an interface between the programming languages; 4. it can easily be used for development of multi-language software applications; 5. applicability in all the domains which use, at the logical level, ‘matrices’ (mathematics, engineering, economics); 6. there are no constraints regarding the use of ‘classic’ solutions techniques; 7. it is easy to implement in software applications already written; 8. data type used as interface may easily be modified in order to be adapted in an optimum way to the current application to be developed. By the use of this solution we solved a series of computer problems and ‘dedicated’ applications in some areas like: Mathematics, Experimental Mechanics, Computational Mechanics, Physics, etc.

scholarly journals Computer-aided design and Computer-aided engineering

2018 ◽  
Vol 170 ◽  
pp. 01115 ◽  
Author(s):  
Alexander Kolbasin ◽  
Oksana Husu
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
New Technologies ◽  
Production Systems ◽  
Computer Aided Engineering ◽  
Qualified Personnel ◽  
Computer Aided ◽  
Major Factors ◽  
Engineering Modeling ◽  
Aided Design

In modern industrial production some of the major factors of successful development include: cost reduction of the production, im-provement of its quality, as well as help to minimise the time in market en-try. Computer-aided design and Computer-aided engineering (CAD / CAE - systems) are the most effective for implementation of these requirements. Possible use of this engineering modeling simulation in conjunction with the power and speed of high performance computing could reduce costs and time of each cycle of designing, and also significantly reduce devel-opment time. The introduction of new technologies, the use of high quality products and engagement of qualified personnel would allow businesses and organizations to get on a path of innovative development of design and production systems.

scholarly journals CAR MANIPULATOR IMITATION MODEL IMPLEMENTED IN CAD ENVIRONMENT

2020 ◽  
Vol 9 (4) ◽  
pp. 142-150
Author(s):  
P. Popikov ◽  
Vladimir Zelikov ◽  
Konstantin Yakovlev ◽  
K. Menyaylov ◽  
Mikhail Shabanov ◽  
...  
Keyword(s):  
Numerical Methods ◽  
Simulation Model ◽  
Programming Languages ◽  
Analytical Methods ◽  
Computer Aided Design ◽  
Lagrange Equations ◽  
Modern Computer ◽  
Computer Aided ◽  
Design Systems ◽  
Aided Design

The article is devoted to the problems of simulation of the working process of a truck-mounted crane using modern computer-aided design systems and applications for engineering calculations. Currently, analytical methods are mainly used to model the operation of manipulator technology, such as “manual” compilation and solution of Lagrange equations of the second order, or even simpler evaluative calculations based only on basic concepts of theoretical mechanics. However, such objects consist of many parts that are in a complex rotational motion and contact interaction with each other. If such complex systems are modeled by the indicated analytical methods, one has to introduce a number of assumptions that greatly simplify the mathematical model. The level of its adequacy is low. Also recently, numerical methods for modeling mechanisms that are implemented through programming languages by using a detailed description of the process under study are often used abroad. An alternative to these methods is the use of computer-aided design systems in which numerical methods are built-in at the core level of the program and require setting the basic geometric, dynamic and kinematic parameters of the mechanism and the environment, after which they can calculate the functioning parameters of the object under study. The process of creating a simulation model of a truck mounted crane, which is an analogue of an existing laboratory setup, has been considered. To do this, a 3D model of the manipulator in the SolidWorks CAD environment has been developed. The creation technique and the main features of the obtained simulation model have been described

A New Software Approach for the Simulation of Multibody Dynamics

2007 ◽  
Vol 2 (3) ◽  
pp. 274-278 ◽  
Author(s):  
Dmitry Vlasenko ◽  
Roland Kasper
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Design Tool ◽  
Design Engineers ◽  
Modular Software ◽  
The Matrix ◽  
Kinematic Loops ◽  
Virtual System ◽  
The Cost ◽  
Aided Design

This paper introduces a new modular software approach combining symbolical and numerical methods for the simulation of the dynamics of mechanical systems. It is based on an exact, noniterative object-oriented algorithm, which is applicable to mechanisms with any joint type and any topology, including branches and kinematic loops. The simulation of big well-partitioned systems has complexity O(N), where N is the total number of simulated bodies. A new design software Virtual System Designer (VSD) integrates this method with the three-dimensional computer aided design tool Autodesk Inventor, which minimizes the cost of the development of models and the training of design engineers. The most time-expensive routine of the simulation process in VSD is the calculation of the accelerations of each body, which needs to find the roots of matrix equations. Accounting for the sparsity of matrices can significantly improve the numerical efficiency of the routine. The preprocessing module, developed using Maple software, performs the symbolic simplification of the matrix multiplication’s and QR decomposition’s procedures. The new coordinate projection method is demonstrated. The results of the simulation of the dynamics of a double insulator chain example show the method’s stability and effectiveness.

High Performance SiGe HBT Performance Variability Learning by Utilizing Neural Networks and Technology Computer Aided Design

2020 ◽  
Vol 98 (5) ◽  
pp. 127-134
Author(s):  
Henry Lee Aldridge ◽  
Jeffrey B Johnson ◽  
Rajendran Krishnasamy ◽  
Vibhor Jain ◽  
Rahul Mishra ◽  
...  
Keyword(s):  
Neural Networks ◽  
Computer Aided Design ◽  
High Performance ◽  
Sige Hbt ◽  
Performance Variability ◽  
Computer Aided ◽  
Aided Design

Optimisation of 4H-SiC Enhancement Mode JFETs for High Performance and Energy Efficient Digital Logic in Extreme Environments

2011 ◽  
Vol 413 ◽  
pp. 391-398 ◽  
Author(s):  
Hassan Habib ◽  
Nicholas Wright ◽  
Alton B. Horsfall
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Energy Efficient ◽  
Computer Aided Design ◽  
High Performance ◽  
Extreme Environments ◽  
Enhancement Mode ◽  
Power Resources ◽  
Commercial Device ◽  
Aided Design

The commercialisation of Silicon Carbide devices and circuits require high performance, miniaturised devices which are energy efficient and can function on the limited power resources available in harsh environments. The high temperature Technology Computer Aided Design (TCAD) simulation model has been used to design and optimise a potential commercial device to meet the current challenges faced by Silicon Carbide technology. In this paper we report a new methodology to optimise the design of high temperature four terminal enhancement mode n-and p-JFETs for Complementary JFET (CJFET) logic.

Sign in / Sign up

Export Citation Format

Share Document