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相关概念视频

Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

131
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
131
Unsymmetric Loading of Thin-Walled Members01:23

Unsymmetric Loading of Thin-Walled Members

89
Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
89

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相关实验视频

Updated: May 12, 2025

Indirect Fabrication of Lattice Metals with Thin Sections Using Centrifugal Casting
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使用MMC-SIMP顺序拓优化方法设计多材料结构.

Zhao Li1, Hongyu Xu1, Shuai Zhang2

  • 1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, China.

PloS one
|May 9, 2025
PubMed
概括

本研究提出了一种连续拓优化方法,将移动可变组件 (MMC) 和固体同位素材料与惩罚 (SIMP) 方法相结合,用于多材料结构. 这种方法有效地实现了明确的外部拓和灵活的内部材料布局.

科学领域:

  • 工程 工程师 工程师 工程师
  • 计算力学 计算力学 计算力学
  • 材料科学 材料科学 材料科学

背景情况:

  • 多材料结构设计在优化拓和材料布局方面存在挑战.
  • 现有的方法可能在保持外部结构完整的同时,在内部材料分配中不提供足够的灵活性.

研究的目的:

  • 为多材料结构引入一种新的顺序拓优化方法.
  • 结合移动形态组件 (MMC) 和固体同位素材料与惩罚 (SIMP) 方法的优势.
  • 为了实现明确的外部拓和增强的内部多材料布局自由.

主要方法:

  • 一种连续的方法,将MMC方法用于拓确定和SIMP方法用于材料布局优化.
  • 使用组件映射元素将外部拓与内部材料布局变化脱.
  • 在提供关键代码的 MATLAB 中实现.

主要成果:

  • 成功实现了显式外部结构拓.
  • 在内部多材料布局中表现出更大的自由.
  • 通过数值示例验证方法的可行性和有效性.

结论:

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  • 提出的顺序优化方法有效地整合了MMC和SIMP技术.
  • 该方法为多材料结构设计提供了实用和高效的解决方案.
  • 该方法在明确的拓控制和内部材料布局灵活性之间提供了平衡.