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以焦炉为例,介绍了一种复杂设备的三维结构交互式演示系统开发方法。应用SketchUp建立焦炉各组成部分的三维数字模型,并导出展示其内部结构的图片和动画。应用Authorware制作焦炉结构三维交互演示系统,该演示系统能用大量的三维图像和动画生动形象地展示焦炉各大组成部分的内部结构和基本工作原理。 相似文献
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For a channel-shoal system in a funnel-shaped basin the impact of dredging and dumping is investigated using a complex process-based
model. First, the residual flow and sediment transport circulations are analysed for the channel-shoal pattern, which has
emerged after a long-term model simulation. Results are compared to the Western Scheldt estuary, which forms the inspiration
for this study. Subsequently, different dredge and dump scenarios are modelled, according to a conceptual model, in which
ebb-and flood-channels and enclosed shoals form morphodynamic units (cells) with their own sediment circulation. Model results
show that dumping sediment in a channel further reduces the channel depth and induces erosion in the opposite channel, which
enhances tilting of the cross-section of the cell and eventually can lead to the degeneration of a multiple channel system
into a single channel. The impact of different dredging and dumping cases agrees with results from a stability analysis. This
means that this type of model applied to a realistic geometry can potentially be used for better prediction of the impact
of human interventions. 相似文献
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随着3D数字技术的发展,古生物化石的数字化研究已成为地质学和古生物学研究的重要领域之一,利用古生物化石开发的数字模型为古生物的展览展示提供了更直观、更丰富的动态体验,同时也带给观众更多的观赏性和趣味性。本文以大连自然博物馆古生物数字模型的开发与应用为例,阐述古生物数字模型在自然博物馆展陈中的应用,以期见微知著,推动古生物数字模型的开发及其在展陈中的应用研究。 相似文献
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朱正国 《广东广播电视大学学报》2006,15(3):89-92
如果将工资与劳动力区分开,那么,随着工资刚性增长和剩余价值率下降,技术进步就不一定表现为资本有机构成提高,而是人均资本的增加或人力资本积累。基于此,对马克思利润率平均化数字模型加以改进,并推广到分析经济增长。结果表明,在技术进步、资本等要素投入增加和工资增长同时起作用的情况下,一个经济系统可能得到较快增长,平均利润率较高,增加就业则相对困难。 相似文献
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ZHOU Xiaoqing HAO Hong DEEKS Andrew 《天津大学学报(英文版)》2006,12(B09):132-137
To model the damage process of masonry walls under blast loading, a dynamic continuum damage material model is constructed for brick and mortar separately. The degradation of both the stiffness and strength are governed by a damage variable. By using the proposed material model, damage and fragmentation of a typical masonry wall under blast loading at different scaled distances is calculated. The hazard level of the masonry wall to blast loading is evaluated by analyzing the numerical results. 相似文献
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关于2009年全运会体育场人员疏散的数字模型分析 总被引:1,自引:0,他引:1
参阅大量文献资料和具有实际背景的统计数据,运用理论预测针对体育场人员的疏散,提出了"拥挤状态下的人流数字模型". 相似文献
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丁焱 《中国现代教育装备》2014,(14):84-85
一、什么是3D打印
3D打印,即快速成型技术的一种,它被喻为是第三次工业革命的核心技术之一,是一种以数字模型文件为基础,运用PAL、ABS或粉末、金属、塑料等可黏合材料,通过逐层打印的方式来构造物体的技术。 相似文献