拓扑优化设计及嵌入式技术在3D打印中的应用
doi: 10.19591/j.cnki.cn11-1974/tf.2022040004
Application of topology optimization design and embedded technology in 3D printing
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摘要: 3D打印又称为增材制造(additive manufacturing,AM),是一种通过三维设计数据和材料逐层累加的方法来制造实体零件的技术。随着信息技术和智能控制被应用到3D打印技术之中,3D打印技术日趋成熟,并逐步实现了商业化。制造工艺的飞速发展往往需要设计技术的快速跟进,拓扑优化方法不依赖初始构型及工程师经验,能够获得意想不到的创新构型,已成为结构创新设计的重要工具。嵌入式技术是一种由内部计算机控制并执行专用功能的设备或系统,与通用型计算机系统相比,嵌入式系统功耗低、功能强大、实时性强、支持多任务、占用空间小、效率高,面向特定应用可根据需要灵活定制,在3D打印设备中有着更好的使用优势。本文总结了拓扑优化设计和嵌入式数字技术在3D打印中的应用,介绍了拓扑优化在3D打印中的应用案例和拓扑优化主流软件,分析了嵌入式技术在3D打印中的应用优势及案例,展望了拓扑优化设计及嵌入式数字技术在3D打印中的应用。
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关键词:
- 拓扑优化 /
- 增材制造 /
- 3D打印 /
- 轻量化 /
- 嵌入式技术
Abstract: 3D printing, also known as additive manufacturing (AM), is a technology that uses 3D design data to build physical parts by adding materials layer by layer. With the application of information technology and intelligent control to 3D printing technology, the 3D printing technology is becoming more and more mature and commercialized gradually. The rapid development of manufacturing technology often requires the rapid follow-up of design technology. Topology optimization method has become an important tool for the structural innovative design because it is independent of the initial configuration and the engineer experience and can obtain completely unexpected innovative configurations. Embedded technology is a device or system that is controlled by an internal computer and performs a special function. Compared with the general purpose computer systems, the embedded systems have the advantages in 3D printing, such as low power consumption, powerful functions, strong real-time performance, multi-task support, small space occupation, and high efficiency, and the specific applications can be customized according to the needs of flexible. The application of topology optimization design and embedded digital technology in 3D printing was summarized in this paper, the application cases of topology optimization and the mainstream software of topology optimization were introduced, the application advantages and cases of the embedded technology in 3D printing were analyzed, and the future topology optimization design and the application of embedded digital technology in 3D printing were prospected.-
Key words:
- topology optimization /
- additive manufacturing /
- 3D printing /
- light weight /
- embedded technology
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图 1 典型拓扑优化[ 6- 7]
Figure 1. Typical topology optimization[ 6- 7]
图 2 基于拓扑优化的3D打印多层级结构骨骼(a)[ 5]和摩托车(b)
Figure 2. 3D printed multi-scale bones (a)[ 5] and motorcycle (b) based on the topology optimization
图 3 航天组件拓扑优化前后对比[ 12]:(a)优化前;(b)优化后
Figure 3. Aerospace components before and after the topology optimization [ 12]: (a) before optimization; (b) after optimization
图 4 Altair Inspire软件优化模型[ 13]
Figure 4. Optimization model of Altair Inspire software[ 13]
图 5 原节点与拓扑节点对比[ 14]:(a)原节点;(b)拓扑优化后节点;(c)优化后内部细节
Figure 5. Original and topology joint[ 14]: (a) original joint; (b) topology joint after optimization; (c) inner details of topology joint after optiniztion
图 6 3D模型拓扑优化结果打印输出样件[ 15]:(a)吊球;(b)佛像;(c)兔子
Figure 6. 3D printing samples by topology optimization[ 15]: (a) hanging ball; (b) Buddha head; (c) bunny
图 7 微结构构型拓扑形状优化(泊松比为−0.8~0.8)[ 17]:(a)拓扑优化设计的单元格;(b)3D打印的单元格;(c)3×3单远格组成的构造化材料
Figure 7. Optimized architectures by topology and shape with Poisson ratio of −0.8~0.8[ 17]: (a) designed unit cells by topology optimization; (b) 3D printed unit cells; (c) 3×3 unit cells of the corresponding architectures
图 8 航空器支架拓扑优化过程[ 18]
Figure 8. Topology optimization process of aerospace bracket[ 18]
图 9 四轴飞行器臂原始设计(a)、优化后的晶格结构(b)与拓扑优化结果(c)[ 19]
Figure 9. Original design (a) optimized lattice structures (b), and topology optimization result (c) of the quadcopter arm[ 19]
图 10 1%应变下拓扑优化结构(a)与菱形十二面体结构(b)中的应力分布[ 22]
Figure 10. Stress distribution in topologically optimized structure (a) and rhombic dodecahedron structure (b) at 1% strain[ 22]
图 11 具有拓扑优化结构的多孔CP–Ti透射电子显微形貌[ 22]:(a)透射电镜明场图像;(b)孪晶薄片的明场图像;(c)相应孪晶区域的电子衍射图;(d)孪晶界面的原子尺度图像
Figure 11. Transmission electron microscopy images of the porous CP–Ti with the topology-optimized structure[ 22]: (a) bright-field image; (b) bright-field image of the twinned flakes; (c) electron diffraction pattern of the corresponding twinned region; (d) atomic-scale image of the twinned interface
表 1 拓扑优化软件性能对比分析
Table 1. Performance comparison of the topology optimization software
拓扑优化软件 界面操作 材料数据库 性能分析 制造约束分析功能 自动化几何重构 与3D打印集成度 Altair Inspire 简单 丰富 支持 强 较高 很高 Siemens NX 较复杂 较丰富 支持 较强 高 高 PTC Creo 较简单 较丰富 支持 较强 高 较高 Autodesk Netfabb 简单 丰富 支持 较强 较高 很高 代做工资流水公司廊坊开房贷收入证明深圳个人流水代开石家庄办理贷款流水绍兴公司银行流水报价打印入职流水上饶工资流水账单打印宿迁流水账单报价镇江开工资代付流水湛江房贷收入证明费用唐山查车贷银行流水盐城工作收入证明费用菏泽贷款流水孝感做个人银行流水德阳做企业银行流水烟台代做银行流水PS上海购房银行流水报价常德流水单淮安查询企业贷流水宁德工资流水单公司广州工资流水app截图代开无锡背调工资流水镇江房贷流水代办衡阳开企业对私流水苏州对公账户流水代办衡阳代办银行对公流水上饶银行流水办理德阳贷款流水多少钱湘潭银行对公流水查询常州代开对公流水济南制作入职流水香港通过《维护国家安全条例》两大学生合买彩票中奖一人不认账让美丽中国“从细节出发”19岁小伙救下5人后溺亡 多方发声卫健委通报少年有偿捐血浆16次猝死汪小菲曝离婚始末何赛飞追着代拍打雅江山火三名扑火人员牺牲系谣言男子被猫抓伤后确诊“猫抓病”周杰伦一审败诉网易中国拥有亿元资产的家庭达13.3万户315晚会后胖东来又人满为患了高校汽车撞人致3死16伤 司机系学生张家界的山上“长”满了韩国人?张立群任西安交通大学校长手机成瘾是影响睡眠质量重要因素网友洛杉矶偶遇贾玲“重生之我在北大当嫡校长”单亲妈妈陷入热恋 14岁儿子报警倪萍分享减重40斤方法杨倩无缘巴黎奥运考生莫言也上北大硕士复试名单了许家印被限制高消费奥巴马现身唐宁街 黑色着装引猜测专访95后高颜值猪保姆男孩8年未见母亲被告知被遗忘七年后宇文玥被薅头发捞上岸郑州一火锅店爆改成麻辣烫店西双版纳热带植物园回应蜉蝣大爆发沉迷短剧的人就像掉进了杀猪盘当地回应沈阳致3死车祸车主疑毒驾开除党籍5年后 原水城县长再被查凯特王妃现身!外出购物视频曝光初中生遭15人围殴自卫刺伤3人判无罪事业单位女子向同事水杯投不明物质男子被流浪猫绊倒 投喂者赔24万外国人感慨凌晨的中国很安全路边卖淀粉肠阿姨主动出示声明书胖东来员工每周单休无小长假王树国卸任西安交大校长 师生送别小米汽车超级工厂正式揭幕黑马情侣提车了妈妈回应孩子在校撞护栏坠楼校方回应护栏损坏小学生课间坠楼房客欠租失踪 房东直发愁专家建议不必谈骨泥色变老人退休金被冒领16年 金额超20万西藏招商引资投资者子女可当地高考特朗普无法缴纳4.54亿美元罚金浙江一高校内汽车冲撞行人 多人受伤
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