Model Transform Based on a Kind of Transition Subnet

2010 ◽  
Vol 5 (6) ◽  
Author(s):  
Zhijian Wang ◽  
Dingguo Wei ◽  
Cheng Xu
Keyword(s):  
Model Transform

Error Model and Simulation to Arbitrary Point of Automobile Panels in Normal Mechanical Parameter Measurement Instrument

2010 ◽  
Vol 152-153 ◽  
pp. 263-268
Author(s):  
Zhen Zhong Sun ◽  
Zeng Hong ◽  
Sheng Gui Chen
Keyword(s):  
Measurement Instrument ◽  
Arbitrary Point ◽  
Differential Method ◽  
Error Model ◽  
Parameter Measurement ◽  
Mechanical Parameter ◽  
Measuring Error ◽  
Model And Simulation ◽  
Total Differential ◽  
Model Transform

By using homogenous coordinate transformation principle and Denavit-Hartenberg analysis method, a measurement kinematics model and a error model to arbitrary point of automobile panels in normal mechanical parameter measurement instrument, which the movement of the probe center is relative to machine reference frame is construct. On the basis of using wielding matrix function total differential method, building up the error delivery relation of parameter error of measuring motion model transform to the probe center, and having verified what be built the error model correctness by simulation. The error is enlarge mainly in the process of delivery from angle error, while length error are very minor in error effects. This research can establish a base for studying the measuring-error of portable type measures instrument and it's measuring accuracy.

Study of Toleranced Products Modeling Based on Virtual Reality

2009 ◽  
Vol 16-19 ◽  
pp. 781-785 ◽  
Author(s):  
Gang Wei Cui ◽  
Ying Xue Yao ◽  
Yu Wang
Keyword(s):  
Virtual Reality ◽  
Information Integration ◽  
Low Cost ◽  
Geometric Model ◽  
Virtual Assembly ◽  
Product Modeling ◽  
Product Model ◽  
Special Software ◽  
Model Transform ◽  
Cad Cam

Virtual assembly based on the virtual reality gives a low-cost and rapid prototyping method for products’ assembly, and tolerances have become a key technique of information integration in CAD/CAM. It will be a new task about how to integrate tolerances into virtual assembly. A toleranced product model based on the virtual reality is constructed for the virtual assembly, and the essential data is saved and managed in database. Model transform interface software is developed, which is a special software that users can get the essential data without any users’ acting. The geometric model of products is constructed in the virtual reality, and the method of getting assembly information, dimensions, and tolerances is proposed. A toleranced product modeling system based on the virtual reality is developed, and the using of tolerances is discussed by an example.

scholarly journals Small Volumes, Concealed Images: Portrait Miniatures and the Body = Pequeños volúmenes, imágenes ocultas: Las miniaturas retrato y el cuerpo

2018 ◽  
pp. 33
Author(s):  
Marianne Koos
Keyword(s):  
The Body ◽  
Close Reading ◽  
English Renaissance ◽  
Binary Relations ◽  
Historical Sources ◽  
La Joya ◽  
Model Transform ◽  
Opening And Closing

This paper examines a group of artifacts that are paradigmatic for images worn on the body: the portrait jewel. In particular the article focuses on the envelopes in which English Renaissance portrait miniatures – like human bodies – were protected. Historical sources reveal very different materials: Besides paper, silk, ivory or velvet we find jeweled metal containers that made it possible to fix the portrait on one’s own body. The article analyzes how, both in images of an official and very intimate nature, these jeweled artifacts interact with the wearer’s body. It does so by focusing on the process of handling: Portrait jewels always demanded an act of opening and closing, of turning and folding, through which they ‘unfolded’ their specific semantics – and their very agency. How exactly these tiny items could model, transform and question binary relations of object and subject is finally shown with a ‘close reading’ of the Heneage Jewel, the most complex of these artifacts. Este documento examina una serie de objetos que representan ejemplos de imágenes que se llevan sobre el cuerpo: las joyas-retrato. En particular, el artículo se centra en los envoltorios con los que las miniaturas-retrato del Renacimiento Británico - al igual que el cuerpo humano - estaban protegidas. Las fuentes históricas nos revelan materiales muy distintos: además del papel, la seda, el marfil o el terciopelo, encontramos contenedores metálicos enjoyados que permitían llevar el retrato sobre el propio cuerpo. El artículo analiza cómo, tanto en imágenes de naturaleza oficial como muy íntima, estos objetos enjoyados interaccionan con el cuerpo del usuario. Esto tiene lugar centrándose en su proceso de manipulación: las joyas-retrato siempre requerían de una acción de apertura y cierre, de giro y plegado, a través de la cual desplegaban su significado específico así como su propio cometido. El cómo exactamente estas diminutas piezas podían modelarse, transformarse y cuestionar sus relaciones binarias entre objeto y sujeto, se demuestra finalmente con una lectura pormenorizada de la joya Heneage, la más compleja de estas piezas.

Solution Bounds and Nearly Exact Solutions for 3D Nonlinear Problems of Large Deformation of Solids Using S-Fem

2019 ◽  
Vol 17 (02) ◽  
pp. 1845007 ◽  
Author(s):  
S. W. Wu ◽  
M. Li ◽  
C. Jiang ◽  
G. R. Liu
Keyword(s):  
Lower Bound ◽  
Exact Solutions ◽  
Large Deformation ◽  
Strain Energy ◽  
Three Dimensional ◽  
Nonlinear Problems ◽  
Scaling Factor ◽  
Model Transform ◽  
Smoothed Finite Element Method ◽  
Large Deformation Problems

In this work, a three-dimensional (3D) nonlinear smoothed finite element method (S-FEM) solver is developed for large deformation problems. Node-based and face-based S-FEM using automatically generable four-noded tetrahedral elements (NS-FEM-Te4 and FS-FEM-Te4) are adopted to find the solution bounds in strain energy. The lower bound solutions are obtained using FEM-Te4 and FS-FEM-Te4, while the upper bound solutions are obtained using NS-FEM-Te4. A combined [Formula: see text]S-FEM-Te4 with a scaling factor [Formula: see text] that controls the combination is constructed to find nearly exact solutions for the nonlinear solids mechanics problems through adjusting [Formula: see text]. This is achieved using the property that a successive change of scaling factor [Formula: see text] can make the model transform from “overly-stiff” to “overly-soft”. Considering the properties of FS-FEM and NS-FEM, a selective FS/NS-FEM-TE4 is also used to solve 3D nonlinear large deformation problems, which produces a lower bound in strain energy. Hyperelastic Mooney–Rivlin and Ogden materials are both used in this study. Numerical examples reveal that S-FEM-Te4 is an effective method for obtaining solution bounds together with the standard FEM, and the FS-FEM-Te4, NS-FEM-Te4 and selective FS/NS-FEM-TE4 are robust with the high accuracy and computational efficiency for large deformation nonlinear problems.

Interpretation of the low angle X-ray diffraction from insect flight muscle in rigor

1980 ◽  
Vol 207 (1166) ◽  
pp. 13-33 ◽  
Keyword(s):  
Thin Filament ◽  
Flight Muscle ◽  
Insect Flight ◽  
Insect Flight Muscle ◽  
X Ray Diffraction ◽  
Thin Filaments ◽  
Model Transform ◽  
Cross Bridges ◽  
The Fourier Transform ◽  
Symmetry Operations

The structure of insect flight muscle is formally described in terms of actin-based cross-bridges upon which successive symmetry operations are performed, in combination with a modulation function. The Fourier transform of the structure is generated by means of these steps. The model transform is fitted to the observed diffraction pattern from insect flight muscle in rigor and the position of the rigor cross-bridges deduced; they are found to lie across the long helix of actin monomers and to project away from the thin filament. The cross-bridges interact with approximately one-third of the actin monomers, and show a strong preference for a particular orientation between the thick and thin filaments.

Research on Management Information System of the Logistics Supply Chain of Liaoning Agricultural and Mechanical Products

2011 ◽  
Vol 323 ◽  
pp. 167-171
Author(s):  
Qing Jun Wang ◽  
Zhi Hong Wu
Keyword(s):  
Information System ◽  
Supply Chain ◽  
Management Information System ◽  
Agricultural Production ◽  
Operation Mode ◽  
Agricultural Products ◽  
Management Model ◽  
Management Information ◽  
Mechanical Products ◽  
Model Transform

In allusion to the characteristics of Liaoning agricultural products logistics, this paper comes up with the management model of the logistics supply chain of Liaoning agricultural products from the aspect of information technology and the establishment of management information system of logistics supply chain of Liaoning agricultural products to achieve the transformation of agricultural products logistics from traditional function-based basic logistics to integrated logistics model, transform the agricultural production and operation mode, adjust the structure of agricultural production, establish the management model of the supply chain of agricultural products logistics based on information network which is fit for Liaoning, apply the theory of supply chain management to the producing, processing and circulation segments of agricultural products, and actively promote the development of agricultural economy and the process of agriculture industrialization in Liaoning.

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