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Quick Checking with desk digitizer for Automotive Clay and 3-d Reverse modelling

Quick Checking with Desk Digitizer for Automotive Clay and 3...

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2005国际机械工程与力学会议

作者： Qiang LI Mu WANG Ling YANG department of Industrial design College of Automotive Engineering Jilin University Nanling Campus Jilin University

With the Immersion MicroScribe-3d desk digitizer and the WACOM intuos intelligent graphics tablet system, a quick checking method is presented here for both the clay modelling and the reverse 3-d modelling in the automotive styling. The method can assist the stylists quickly to check out the under-constructed clay model if there is a 3-d model in computer, which is different from the traditional clay modelling method to use the printed elevation views, scales and rulers to check out the precision of clay model. Similarly, it can also assist the reverse engineers quickly to find out the difference between the clay model and the 3-d model to refine the 3-d model further when the clay model is ready. The test indicates that the differences and precision between the clay model and 3-d model can be easily found out and controlled once the reference marks fixed. Therefore, such a method can be applied effectively to speed up the clay model construction or the 3-d reverse modelling in automotive engineering.

关键词： Clay modelling 3-d modelling Reverse engineering (RE) Automotive styling

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modelling OF THE WAVE-CURRENT INTERACTION IN THE PEARL RIVER ESTUARY

MODELLING OF THE WAVE-CURRENT INTERACTION IN THE PEARL RIVER...

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全球华人水动力学学术会议

作者： WAI Wing-hong,Onyx LI Yok-sheung department of Civil and Structural Engineering The Hong Kong Polytechnic UniversityHong Kong department of Civil and Structural Engineering The Hong Kong Polytechnic UniversityHong Kong

＜正＞A wave propagation model based on the wave action conservation theory was developed and applied to the modelling of wave characteristics and the interaction of wave and current in the Pearl River Estuary, by coupling with a three-dimensional hydrodynamics model. The modelling results show that waves propagating from the open sea would be attenuated significantly because of sheltering by islands and shoaling. Waves incoming from the south can propagate further upstream. The tidal current generally increases the wave heights and the effect of the ebbing flow on waves is significant.

关键词： pearl river estuary 3-d modelling wave propagation wave-current interaction

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