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相关概念视频

Composite Bodies00:55

Composite Bodies

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A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
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Frames: Problem Solving II01:26

Frames: Problem Solving II

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Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
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Frames: Problem Solving I01:24

Frames: Problem Solving I

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Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
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Superposition Theorem01:18

Superposition Theorem

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The superposition principle is a fundamental concept stating that in a linear circuit, the voltage across (or current through) an element can be determined by summing the individual contributions of each independent source acting in isolation. When dealing with linear circuits containing multiple independent sources, this principle serves as a valuable tool for analysis. To apply the superposition principle effectively, one should focus on a single independent source at a time while...
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Plastic Deformations01:19

Plastic Deformations

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
122
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

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In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
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大致的拼图片组合组合.

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    科学领域:

    • 科学可视化科学可视化
    • 高性能计算 (HPC) 是一种高性能计算.

    背景情况:

    • 适应性网状精细化 (AMR) 和非结构化的网状网对于高效的大规模模拟至关重要.
    • 对HPC的数据分区通常会导致复杂的,非凸起的边界,阻碍了标准的可视化技术.
    • 现场和后期可视化面临挑战,因为复杂的网格数据难以重新分区.

    研究的目的:

    • 为AMR和非结构化网格开发一种新的分布式体积染和组合算法.
    • 为了实现复杂的模拟数据的快速,高精度,现场染.
    • 为了克服标准染技术的局限性,这些技术需要凸和不连接的数据分区.

    主要方法:

    • 介绍了近似拼图组合,一个分布式体积染算法.
    • 杆式基于时刻的有序独立透明度,用于可扩展的,有序独立的编译.
    • 设计了一个算法,需要最小的通信和没有数据重新分区.

    主要成果:

    • 展示了AMR和非结构化的网格的快速和高精度的现场染.
    • 在更高的核心数量下实现了可扩展的,独立于顺序的编译,在更高的核心数量下最小的开销.
    • 与HPC系统上最新的排序-最后组合技术相比,经过验证的性能和图像质量.

    结论:

    • 大致拼图组合提供了一个可扩展,高性能和高质量的染解决方案.
    • 该算法适用于大型计算流体动力学 (CFD) 模拟中的复杂数据分布.
    • 消除了需要昂贵的数据重新分区的需求,促进了有效的现场和后期分析.