scholarly journals GENERATING NUMERICAL MULTIBODY MODEL OF TOOTHED BELT IN TECHNOLOGICAL MACHINES WITH SIEMENS NX

2021 ◽  
Vol 13 (3) ◽  
pp. 87-95
Author(s):  
Julian Malaka ◽  
◽  
Mariusz Hetmańczyk ◽  
Keyword(s):  
Dynamic Model ◽  
Multibody System ◽  
Geometric Model ◽  
Automatic Generation ◽  
Computer Technique ◽  
Theoretical Concepts ◽  
Multibody Model ◽  
Computer Aided ◽  
Toothed Belt ◽  
Belt Transmission

So far, in computer-aided modelling programs, there have not been implemented tools for the automatic generation of a dynamic model of an elastic belt transmission, created in the form of a multibody system. The publication presents reflections on this issue. There were developed scripts allowing one to automatically obtain the appropriate arrangement of links with respect to each other and to create the desired mechanical relations between or among them and other drive elements in the simulation. The programming bases of the proposed solutions were presented. Theoretical concepts were supported by application experiments in the Siemens NX environment. The method for the automatic generation of a multibody model of the toothed belt transmission, based on the geometric model of the latter, was developed. The work enabled the formulation of the conclusions on the development of modelling of the systems under consideration. The results of the research indicate high potential of the presented achievements. They constitute a basis for increasing the degree of computer technique aid for constructors or analysts.

Computer-Aided Design of Curved Assistance Characteristic of EPS System

2010 ◽  
Vol 39 ◽  
pp. 598-601
Author(s):  
Bing Zhou ◽  
Shao Yi Bei ◽  
Jing Bo Zhao
Keyword(s):  
Dynamic Model ◽  
Control Strategy ◽  
Computer Aided Design ◽  
Overall Design ◽  
Safety Improvement ◽  
Key Technologies ◽  
Computer Aided ◽  
Design Function ◽  
Engineering Significance ◽  
Aided Design

The control strategy is one of the key technologies of EPS system, and the assistance characteristic has great importance to the vehicle handiness and road feeling. Based on the EPS dynamic model, the curved assistance characteristic is designed. The curved assistance characteristic has the superiority to find the better balance between handiness and road feeling. It has engineering significance to the overall design, function enhancement and optimization and steering manipulation and safety improvement.

Geometric Modelling and Computer-Aided Design

2009 ◽  
pp. 1-31
Author(s):  
Xun Xu
Keyword(s):  
Computer Aided Design ◽  
Data Exchange ◽  
Geometric Model ◽  
Point Of View ◽  
Geometric Modelling ◽  
Cad Systems ◽  
Cad System ◽  
Wire Frame ◽  
Computer Aided ◽  
Aided Design

One of the key activities in any product design process is to develop a geometric model of the product from the conceptual ideas, which can then be augmented with further engineering information pertaining to the application area. For example, the geometric model of a design may be developed to include material and manufacturing information that can later be used in computer-aided process planning and manufacturing (CAPP/CAM) activities. A geometric model is also a must for any engineering analysis, such as finite elopement analysis (FEA). In mathematic terms, geometric modelling is concerned with defining geometric objects using computational geometry, which is often, represented through computer software or rather a geometric modelling kernel. Geometry may be defined with the help of a wire-frame model, surface model, or solid model. Geometric modelling has now become an integral part of any computer-aided design (CAD) system. In this chapter, various geometric modelling approaches, such as wire-frame, surface, and solid modelling will be discussed. Basic computational geometric methods for defining simple entities such as curves, surfaces, and solids are given. Concepts of parametric, variational, history-based, and history-free CAD systems are explained. These topics are discussed in this opening chapter because (a) CAD was the very first computer-aided technologies developed and (b) its related techniques and methods have been pervasive in the other related subjects like computer-aided manufacturing. This chapter only discusses CAD systems from the application point of view; CAD data formats and data exchange issues are covered in the second chapter.

Research on the Solver of Riccati Transfer Matrix Method for Linear Multibody Systems

2018 ◽  
Author(s):  
Junjie Gu ◽  
Xiaoting Rui ◽  
Jianshu Zhang ◽  
Gangli Chen
Keyword(s):  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Multibody Systems ◽  
Multibody System ◽  
Automatic Generation ◽  
Object Oriented Programming ◽  
Connectivity Matrix ◽  
Closed Loops ◽  
Practical Engineering

Riccati transfer matrix method for multibody systems (RMSTMM) has lower matrix order and better numerical stability than transfer matrix method for multibody systems (MSTMM). In order to make technicians more convenient to apply RMSTMM in practical engineering to improve the computational efficiency of dynamics, in this paper, a linear RMSTMM solver is developed based on the linear RMSTMM theory. A solver input document with good compatibility and extensibility is designed based on extensible markup language (XML); The data structure of multibody system is designed based on object-oriented programming method. The technique of auto selecting the cut hinges of closed-loops of the multibody system is established by introducing the correlation matrix and the dynamic connectivity matrix which depict the connecting state of elements. The automatic generation of the derived tree system by cutting off the closed-loops in the multibody system is realized based on the technique. The automatic regularly numbering of dynamics elements of multibody systems is realized based on the depth first recursive traversal algorithm; Finally, the Riccati transfer matrix recursive technique is implemented based on the regular numbers of dynamics elements of the multibody system. An example is given to verify the effectiveness of the solver which provides a powerful tool for extending the application of RMSTMM in practical engineering.

Kinematic Nonuniformity of the Rotation of a Toothed Belt Transmission with a Composite Pulley

2020 ◽  
Vol 40 (9) ◽  
pp. 705-709
Author(s):  
Zh. Mukhamedov ◽  
V. M. Turdaliev ◽  
A. A. Kosimov
Keyword(s):  
Toothed Belt ◽  
Belt Transmission

A touchdown bearing with surface waviness: A dynamic model using a multibody approach

2017 ◽  
Vol 231 (4) ◽  
pp. 658-669 ◽  
Author(s):  
Oskari Halminen ◽  
Javier F Aceituno ◽  
José L Escalona ◽  
Jussi Sopanen ◽  
Aki Mikkola
Keyword(s):  
Frequency Domain ◽  
Dynamic Model ◽  
Domain Model ◽  
Velocity Analysis ◽  
Surface Waviness ◽  
Multibody Model ◽  
Inner Race

The amount of vibration induced by surface waviness in a touchdown bearing can be modelled with a multibody approach. This study develops a multibody model that accounts for surface waviness in races of touchdown bearings and employs the model to define the dissimilarities of the rotor and inner ring movements, and to perform inner ring velocity analysis in the frequency domain. Model results are compared with measured and simulated outcomes in the literature. Large movements are found in the orbits and velocities in the frequency domain due to surface waviness. Inner race eccentricity and ellipticity seem to be the cause of the most damaging surface waviness. In the frequency domain, all the significant peaks were noticed to be multiplications of rotor pendulum frequency, and the frequency of the inner ring was traceable in cases with waviness in the bearing. The model proposed in this study enables waviness to be taken into account in design of touchdown bearings.

Study on Integration of Computer Aided Process Planning System and PDM System

2013 ◽  
Vol 416-417 ◽  
pp. 919-924
Author(s):  
Hong Xia Yang ◽  
Wei Dong Chen ◽  
Hua Sheng Feng
Keyword(s):  
Product Design ◽  
Process Planning ◽  
Rapid Development ◽  
Computer Integrated Manufacturing ◽  
Planning System ◽  
Strong Basis ◽  
Computer Technique ◽  
Computer Aided Process Planning ◽  
Process Planning System ◽  
Computer Aided

With the rapid development of modern science and technology and computer technique, modern enterprise faces new challenges for product design, production, management, market planning and sales. The products of enterprises develop towards diversification, serialization and individualization. Technological design is important in product manufacturing process and is a bond of product design and actual production. Therefore, modern enterprises need to develop computer aided process planning system to improve the quality and efficiency of process design of the enterprise. Starting from the requirements of enterprises on computer aided process planning systems and combining the existing Web technology, the paper proposes the study on integration of computer aided process planning system and PDM system. The development and application of the system not only provides strong support for enterprises realizing rapid design and manufacture and strong basis for enterprises realizing computer integrated manufacturing system, but also makes informationization degree, economic benefit and social benefit of enterprises improve greatly.

Sign in / Sign up

Export Citation Format

Share Document