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相关概念视频

Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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用于石版成像的对称性维护建模.

Shaopeng Guo, Lei Cheng, Hao Jiang

    Optics letters
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    概括
    此摘要是机器生成的。

    一种新的方法通过将代向量投射到对称子空间上来保留计算成像中的对称性. 这种项目对对称子空间 (PTSS) 方法可以防止光学内核生成中的对称性损失.

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    科学领域:

    • 计算机成像成像技术
    • 光学石版印刷是一种光学石版印刷.
    • 数字建模 数字建模

    背景情况:

    • 在数值模型中保持物理系统对称性是计算成像和石版画中的一个重大挑战.
    • 光学内核的代生成可能导致对称性损失,影响模型的准确性.

    研究的目的:

    • 引入一种新的方法,即项目对对称子空间 (PTSS),用于在光学内核生成过程中保持对称性.
    • 为了应对对称性损失在计算成像数值模型中的挑战.

    主要方法:

    • 项目对对称子空间 (PTSS) 方法涉及将代向量投射到预定义的对称子空间.
    • 这种预测是在传输交叉系数 (TCC) 的分解过程中应用的.

    主要成果:

    • 通过PTSS方法,成功地生成了截断的光学内核集.
    • 生成的光学内核显示显著减少对称性错误,无论切割顺序.

    结论:

    • PTSS 方法有效地防止了光学内核的代生成中的对称性损失.
    • 这种方法确保在计算成像和光刻模型中忠实地保留对称性.