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检索条件"任意字段=10th ASME Biennial Conference on Engineering Systems Design and Analysis"

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A MECHATRONIC design PROCESS FOR thREE AXIS SERIAL ROBOTS

A MECHATRONIC DESIGN PROCESS FOR THREE AXIS SERIAL ROBOTS

引用

10th asme biennial conference on engineering systems design and analysis

作者： Karagulle, Hira Akdag, Murat Malgaca, Levent Dokuz Eylul Univ Dept Mech Engn TR-35100 Bornova Turkey

ISBN: (纸本)9780791849170

three axis serial robots with different sizes are widely used for pick and place, welding and various operations in industry. Developments in mechatronics, which is the synergistic integration of mechanism, electronics and computer control to achieve a functional system, offer effective solutions for the design of such robots. the mechatronic design process involves solid modeling, assembly, rigid body dynamics, finite element rigidity analysis, motion control and computer programming. In this study, Solid Works, Cosmos Motion, Cosmos Works and PC-based motion control programs are used with an integrated approach. the integration software is developed in VisualBASIC by using the application programming interface (API) capabilities of these programs. An experimental three axis serial robot with a reach distance of 790 mm has been produced to develop and test the process.

关键词： Machine design

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SINGULARITY REDUCTION OF A 3-UPS MECHANISM WIth 6 DOF FOR HAPTIC APPLICATIONS

SINGULARITY REDUCTION OF A 3-UPS MECHANISM WITH 6 DOF FOR HA...

引用

10th asme biennial conference on engineering systems design and analysis

作者： Vossoughi, G. R. Khodabakhsh, M. Sharif Univ Technol Dept Mech Engn Ctr Excellence Design Robot & Automat CEDRA Tehran Iran

ISBN: (纸本)9780791849170

A method for singularity reduction in a triangular 3-UPS mechanism is discussed. this mechanism usually has singularity near the origin. Changing the active joint angle can arrive at a suitable workspace near the origin without any singularity. Moreover, a 4-UPS mechanism, based on adding one additional leg to the 3-UPS mechanism, has a larger singular free workspace. Moreover, force analysis of two different mechanisms shows a reasonable and consistent force distribution between the different actuators. Singular free workspace is one of the characteristics which makes this mechanism ideal for haptic applications.

关键词： Haptics Actuators

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Numerical and Experimental Investigation of thermodynamic Behavior of Positive Displacement Compressor

Numerical and Experimental Investigation of Thermodynamic Be...

引用

10th asme biennial conference on engineering systems design and analysis

作者： Paknezhad, Morad Yousefi, Tooraj Sadeghi, Sajjad Ahmadi, Mehran Razi Univ Dept Mech Engn Kermanshah Iran

ISBN: (纸本)9780791849156

A numerical model, based on dynamic mesh, has been developed by FLUENT software, to simulate behavior of a positive displacement compressor. Only first compression stage of compressor was modeled. Modeling was done, by dividing the domain to three areas with different type meshes. Some relations were presented for volumetric, mechanical, isothermal, and overall isothermal performance, and thermodynamic analysis has been performed in term of these relations. Effects of outlet pressure and crankshaft's angular velocity have been investigated on work, polytropic factor of compression, and efficiency. Numerical and experimental results have been compared, and a good agreement was seen between them.

关键词： Reciprocating Compressor thermodynamic analysis Fluent Software Dynamic behavior

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SENSITIVITY analysis OF thE RECTANGULAR TRENCHES EMPLOYED IN SUPPRESSION OF thE HIGH-SPEED TRAIN-INDUCED GROUND VIBRATIONS

引用

10th asme biennial conference on engineering systems design and analysis

作者： Younesian, Davood Sadri, Mehran Iran Univ Sci & Technol Sch Railway Engn Tehran *** Iran

ISBN: (纸本)9780791849194

Ground vibrations generated by high-speed trains are studied in this paper. Open trenches are included in modeling and the problem is formulated using elasticity theory. the ground is modeled by a semi-infinite domain and the embankment with finite layers and the high-speed train is simulated by moving loads. the analytical solution is obtained in frequency domain and the peak particle velocity (PPT) is then achieved for different types of open trenches with different aspect ratios and distance from the track centerline. A parametric study is then carried out and effects of different parameters including the train speed and ground properties on vibration reduction factors are investigated.

关键词： Particulate matter Elasticity Vibration Modeling Trains Pavement live loads Sensitivity analysis Levees

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FINITE ELEMENT analysis OF FULL PENETRATION AND FILLET WELDS IN CANTILEVER BEAMS

引用

10th asme biennial conference on engineering systems design and analysis

作者： Mirzaali, M. Sattarifar, I. Tarbiat Modares Univ Dept Mech Engn Tehran Iran

ISBN: (纸本)9780791849187

Beams in engineering structures are mainly jointed together by welding. In general, they are imposed to static and dynamic loads. thus, analyses of welds are very important to study their behaviours. In this study finite element analyses of welds in the cantilever box beams are performed using the ANSYS program. Two different types of weld are considered;full penetration welds and fillet welds. Stress distributions in different paths are calculated for both types. It is shown that using of full penetration welds in a structure leads to safer welds than using of fillet welds. In addition, effects of different parameters such as fillet weld leg, weld material, thickness of cantilever box beam, and amount of its penetration in beam are studied.

关键词： Welded joints Cantilever beams Finite element analysis Structures Stress Cantilevers Welding

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STUDY ON CRASHWORthINESS CHARACTERISTICS OF SEVERAL CONCENTRIC thIN WALL TUBES

引用

10th asme biennial conference on engineering systems design and analysis

作者： Tehrani, Parisa Hosseini Pirmohammad, Sajad Iran Univ Sci & Technol Sch Railway Engn Tehran Iran

ISBN: (纸本)9780791849170

there is a growing interest in the use of thin-wall structures as a means of absorbing the kinetic energy of a moving body. Multi-layered thin-wall structures are more efficient and lighter than thick-wall structures, and show better crashworthiness characteristics. In this task, several concentric aluminum thin wall tubes as energy absorber under axial and oblique loading are studied and optimum combination of these tubes is presented. the weight of the tubes is optimized while crashworthiness of tubes is not compromised. the commercial finite element program LS-DYNA that offers non-linear dynamic simulation capabilities was used in this study.

关键词： Finite element analysis Simulation Kinetic energy Crashworthiness thin wall structures Aluminum Weight (Mass)

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WHIPLASH PROTECTION BY ENERGY ABSORBING CAR-SEAT CONCEPTS

引用

10th asme biennial conference on engineering systems design and analysis

作者： Himmetoglu, Selcuk Acar, Memis Bouazza-Marouf, Kaddour Taylor, Andy J. Hacettepe Univ Dept Mech Engn Ankara Turkey

ISBN: (纸本)9780791849170

Whiplash injury/disorder is a common neck-injury in road traffic accidents. this paper introduces energy absorbing car-seat concepts which can reduce the risk of whiplash injuries. Computational multi-body models of a generic car seat and a biofidelic 50th-percentile male human model for rear impact are developed to assess the effectiveness of the proposed car-seat concepts. the numerical sled-test-simulations show that the proposed car-seat concepts can successfully mitigate whiplash injuries for a wide range of crash severity by utilising energy absorbing devices which can remain reusable after a rear-impact. A physical model of a proposed car-seat concept is built and tested to verift the computational models.

关键词： Risk Simulation Automotive seats Traffic engineering simulation Accidents Wounds

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POWER TRAIN NVH analysis WIth EXCITE IN A FOUR CYLINDER INLINE ENGINE BY INCLUDING CRANKSHAFT DYNAMICS AND FLYWHEEL SWIRL

引用

10th asme biennial conference on engineering systems design and analysis

作者： Duran, E. Tolga Braumueller, Dirk PT NVH CAE Ford OTOSAN Gebze Engn Gebze Kocaeli Turkey

ISBN: (纸本)9780791849170

Engine mount vibration level, which is mainly driven by gas and unbalanced inertial forces, is one of the key metrics for the NVH (Noise Vibration Harshness) performance of a vehicle. In addition to gas and unbalanced inertial forces, crankshaft dynamics has also effect on engine mount vibrations. this project is concentrating in including the effect of crankshaft dynamics on engine mount vibrations with the aid of Finite Element Methods and Multi Body Dynamics. Flywheel swirl mode, its effect on engine mount vibration levels and engine mount acceleration for different flywheel configurations will be simulated.

关键词： Cylinders Engines Finite element methods Vehicles Dynamics (Mechanics) Vibration Noise (Sound) Trains Flywheels

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design OF A LOW-COST thERMOACOUSTIC ELECTRICITY GENERATOR AND ITS EXPERIMENTAL VERIFICATION

引用

10th asme biennial conference on engineering systems design and analysis

作者： Yu, Zhibin Jaworski, Artur J. Backhaus, Scott Univ Manchester Sch Mech Aerosp & Civil Engn Manchester M60 1QD Lancs England

ISBN: (纸本)9780791849156

this paper describes the design and testing of a low cost thermoacoustic generator. A travelling-wave thermoacoustic engine with a configuration of a looped-tube resonator is designed and constructed to convert heat to acoustic power. A commercially available, low-cost loudspeaker is adopted as the alternator to convert the engine's acoustic power to electricity. the whole system is designed using linear thermoacoustic theory. the optimization of different parts of the thermoacoustic generator, as well as the matching between the thermoacoustic engine and the alternator are discussed in detail. A detailed comparison between the preliminary test results and linear thermoacoustic predictions is provided.

关键词： Heat Loudspeakers Traveling waves Optimization design thermoacoustic devices Acoustics Testing Generators

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design FOR MANUFACTURING systems COMPLEXITY: A PERSPECTIVE APPROACH

引用

10th asme biennial conference on engineering systems design and analysis

作者： Garbie, Ibrahim H. Shikdar, Ashraf Sultan Qaboos Univ Dept Mech & Ind Engn Muscat Oman

ISBN: (纸本)9780791849187

Nowadays researchers focused their attention on design for manufacturing, design for assembly, design for cost or design for quality design for X, etc., but they didn't address design for manufacturing complexity. design for complexity is a systemic approach that simultaneously considers design objectives (i.e., optimize complexity level)), variables and constraints. In this paper, a guideline is presented to show the design requirements. Based on this requirement, the complexity levels will be analyzed through four fundamental levels: design for manufacturing systems vision complexity, design for manufacturing systems structure, design for manufacturing systems operating complexity, and design for manufacturing systems evaluating complexity. the new measuring is suggested for determining the level of complexity. this complexity level is measured and optimized in terms of issues count based on the designer/analyst view. this will represent the degree of freedom of manufacturing system designer to identify which issue is more important than others. the ultimate goal of this paper is to provide the manufacturing system designer with such complexity information throughout the analysis process that an efficient design requirement produces in the first instance. this analysis shows that the design for manufacturing systems complexity should be optimized and taken into considerations when designing manufacturing systems.

关键词： Manufacturing systems design for Complexity Complexity analysis

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