Feature-driven topology optimization method preserving component sequences considering turning angle constraint

IF 3.8 2区 工程技术 Q1 ENGINEERING, MECHANICAL Acta Mechanica Sinica Pub Date : 2024-07-03 DOI:10.1007/s10409-024-23433-x
Dongsheng Jia  (, ), Lei Liu  (, ), Jihong Zhu  (, ), Yu Zhang  (, ), Vassili Toropov
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Abstract

Component sequence preservation is an intrinsic requirement in typical engineering applications, such as deployable chain-like structures, 3D printing structures with contour-parallel toolpaths, additive manufacturing of continuous fibre-reinforced polymer structures, customized stents, and soft robotics parts. This study presents a feature-driven method that preserves component sequences accounting for engineering requirements. The chain-of-bars design variables setting scheme is developed to realize the sequential component’s layout, which sets the current bar’s end point as the next bar’s start point. The total length of the printing path is constrained to reduce the consumption of material accurately. Also, the angle between adjacent bars is constrained to avoid sharp angles at the turning point of the 3D printing path. Next, the sensitivity analysis considering the inter-dependence of substructures is performed. Several numerical examples are given to demonstrate the validity and merits of the proposed method in designing structures preserving component sequences.

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考虑转角约束的特征驱动拓扑优化方法
保留组件序列是典型工程应用的内在要求,例如可部署的链状结构、具有轮廓平行工具路径的三维打印结构、连续纤维增强聚合物结构的增材制造、定制支架和软机器人部件。本研究提出了一种特征驱动方法,可根据工程要求保留组件序列。为实现连续部件的布局,开发了条形链设计变量设置方案,将当前条形链的终点设置为下一个条形链的起点。对打印路径的总长度进行限制,以精确减少材料消耗。此外,还限制了相邻棒材之间的角度,以避免在三维打印路径的转折点出现尖角。接下来,考虑到子结构之间的相互依赖性,进行了敏感性分析。我们给出了几个数值示例,以证明所提方法在设计保留组件序列的结构时的有效性和优点。
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来源期刊
Acta Mechanica Sinica
Acta Mechanica Sinica 物理-工程:机械
CiteScore
5.60
自引率
20.00%
发文量
1807
审稿时长
4 months
期刊介绍: Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics
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