基于多目标优化微型制造系统的轻量级设计方法
Shan Li1,2,3,4, Seyed Hamed Hashemi Sohi1,3
1School of Mechanical Manufacturing and Energy Engineering, Mapúa University, Manila 1002, Philippines.
Micromachines
|September 27, 2025
概括
这项研究优化了超精密CNC机床的轻量化和性能. 一个多阶段的设计框架实现了超过3000公斤的重量减轻,同时提高了静态和动态刚度.
科学领域:
- 机械工程 机械工程
- 制造业 制造技术 制造技术
- 计算设计的计算设计.
背景情况:
- 微型制造系统需要高精度和硬度.
- 轻量化对于能源效率和动态性能至关重要.
- 现有的设计往往缺乏最佳的结构完整性和质量分布.
研究的目的:
- 开发和验证一个多阶段的协作设计框架,用于协同轻量化和性能提升.
- 为了优化超精密计算机数控 (CNC) 机床的结构设计.
- 为了显著降低机床的重量,同时提高静态和动态刚度.
主要方法:
- 灵敏度分析以识别关键组件 (底座,柱子,箱).
- 响应表面方法 (RSM) 用于模拟轴箱的质量和应力.
- 使用遗传集群算法和可变密度拓优化 (SIMP模型) 的多目标优化.
主要成果:
- 在应力约束 (<45 MPa) 下,轴心箱重量减少了57.2% (590 公斤).
- 底座和柱子的重量分别减少了38.5% (2844公斤) 和41.5% (1292公斤).
- 最大静态变形减少了47%,最大应力减少了40%,自然频率增加了66% (至84.08Hz).
结论:
- 拟议的框架有效地实现了显著的轻量化 (>3000公斤) 并提高了静态/动态性能.
- 优化的设计显示出提高了刚性和减少了变形,这对于高端微型制造至关重要.
- 这种方法为精密制造系统中先进的结构设计提供了可行的工程途径.
相关概念视频
01:07Unsymmetric Loading of Thin-Walled Members: Problem Solving
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The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
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01:29Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
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Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
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