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相关概念视频

Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

611
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
611
Method of Sections: Problem Solving I01:27

Method of Sections: Problem Solving I

598
Consider a symmetrical roof truss structure, composed of vertical, diagonal, and horizontal members. The length of each horizontal member is 4 m. The lengths of the vertical members FB and HD are 4 m, while the length of member GC is 6 m. The loads acting at joints F, G, and H are 2 kN, while those at joints A and E are 1 kN.
598
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

691
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
691
Method of Sections: Problem Solving II01:30

Method of Sections: Problem Solving II

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Consider an arbitrary truss structure composed of diagonal, vertical, and horizontal members fixed to the wall. To calculate the force acting on members CB, GB, and GH, method of sections can be used. The loads and lengths of the horizontal and vertical members are known parameters, as shown in the figure.
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Principle of Moments: Problem Solving01:30

Principle of Moments: Problem Solving

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The principle of moments is a fundamental concept in physics and engineering. It refers to the balancing of forces and moments around a point or axis, also known as the pivot. This principle is used in many real-life scenarios, including construction, sports, and daily activities like opening doors and pushing objects.
One such scenario involves a pole placed in a three-dimensional system with a cable attached. When a tension is applied to the cable, the moment about the z-axis passing through...
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Method of Sections01:30

Method of Sections

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Consider a truss structure, as shown in the figure.
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基于望远镜-溶解盒协议的总体采样方法,用于估计潜在的平均力.

Diship Srivastava1, Niladri Patra1

  • 1Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad 826004, India.

Journal of chemical information and modeling
|September 16, 2023
PubMed
概括

本研究介绍了望远镜采样 (TELUS) 和块TELUS方法,以降低计算成本,以计算潜在的平均力 (PMF). 这些新的方法准确地捕捉了分子动力学,类似于传统的雨采样 (美国).

科学领域:

  • 计算化学的计算化学
  • 分子动力学模拟模型
  • 生物物理学的生物物理.

背景情况:

  • 适应式定向分子动力学 (ASMD) 与望远镜盒方案相结合,可以降低潜在的平均力 (PMF) 计算的计算成本.
  • 在低拉力速度下,ASMD汇聚到雨采样 (US),这表明望远镜盒方案的可扩展性到US.

研究的目的:

  • 为了测试望远镜盒方案可以扩展到雨采样 (美国) 的假设.
  • 开发和验证新的计算方法,以实现更高效的PMF估计.

主要方法:

  • 实施两种望远镜式美国 (TELUS) 方法:线性合 (TELUS) 和混合 (Block-TELUS).
  • 应用于聚氨酸的展开和通过脂质双层的α-托科菲醇转位.
  • 通过比较PMF和分子性质,对美国基准模拟进行验证.

主要成果:

  • 无论是TELUS还是Block-TELUS方法,都产生了PMF结果,与两个测试系统的基准美国模拟相重叠.
  • 窗口分析证实,TELUS和Block-TELUS捕获了与传统美国相似的分子动力学和结构性质.
  • 区块TELUS证明了对像膜转位这样的复杂系统的有效性.

结论:

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  • 望远镜解决盒可以有效地应用于雨采样 (美国) 以降低计算成本.
  • 这些方法对于远程溶剂效应依赖于反应坐标的系统尤其有益.
  • 开发的TELUS协议为分子模拟中的PMF计算提供了一个计算效率高的替代方案.