dynamical friction

简明释义

运动摩擦

英英释义

例句

1.The concept of dynamical friction is essential in simulations of vehicle dynamics, where 动力摩擦 plays a key role in tire performance.

在车辆动态模拟中，dynamical friction的概念至关重要，因为动力摩擦在轮胎性能中起着关键作用。

2.In astrophysics, dynamical friction helps explain the interactions between stars in a cluster, which involves 动力摩擦 among their gravitational fields.

在天体物理学中，dynamical friction有助于解释星团中恒星之间的相互作用，这涉及到它们引力场之间的动力摩擦。

3.Researchers are exploring how dynamical friction can be minimized in robotic systems to improve 动力摩擦 efficiency.

研究人员正在探索如何在机器人系统中最小化dynamical friction以提高动力摩擦效率。

4.The study of planetary orbits often involves calculations of dynamical friction, which refers to 动力摩擦 affecting the motion of celestial bodies.

行星轨道的研究通常涉及对dynamical friction的计算，这指的是影响天体运动的动力摩擦。

5.In engineering, understanding dynamical friction is crucial for designing efficient machinery, as it impacts 动力摩擦 and energy loss.

在工程学中，理解dynamical friction对于设计高效的机械至关重要，因为它影响着动力摩擦和能量损失。

作文

In the study of physics, particularly in mechanics, the concept of dynamical friction plays a crucial role in understanding the motion of objects. dynamical friction (动态摩擦) refers to the frictional force that opposes the relative motion of two surfaces in contact when they are sliding past each other. Unlike static friction, which prevents motion from starting, dynamical friction comes into play once the objects are already in motion. This distinction is essential for analyzing various physical systems, from simple experiments to complex machinery.To illustrate the importance of dynamical friction in real-life applications, consider a car driving on a road. When the tires are rolling without slipping, they experience static friction. However, if the driver suddenly applies the brakes, the wheels begin to slide, and dynamical friction takes over. The force of dynamical friction acts against the direction of motion, helping to slow down the vehicle. The effectiveness of this force depends on several factors, including the nature of the surfaces in contact and the normal force pressing them together.One of the key characteristics of dynamical friction is that it is generally less than static friction. This means that it is usually easier to keep an object moving than to start its motion from rest. This principle can be observed in everyday life; for example, pushing a heavy box across the floor requires less force once it is already in motion compared to the initial force needed to get it moving. Understanding this concept can help engineers design more efficient machines and systems by minimizing energy loss due to friction.Moreover, dynamical friction is influenced by the speed of the sliding objects. As the speed increases, the frictional force may change due to various factors such as temperature and surface wear. In many cases, dynamical friction can be modeled using empirical equations, allowing scientists and engineers to predict the behavior of sliding objects under different conditions. This predictive capability is vital in fields such as automotive engineering, where precise calculations of frictional forces are necessary for safety and performance.In addition to its practical applications, the study of dynamical friction also has theoretical implications. It connects to broader concepts in physics, such as energy conservation and thermodynamics. When two surfaces slide against each other, some kinetic energy is converted into heat due to dynamical friction, which can lead to temperature changes in the materials involved. This interplay between motion and thermal energy is a fundamental aspect of many physical processes.Overall, the understanding of dynamical friction is essential for anyone studying mechanics or related fields. It not only helps explain the behavior of sliding objects but also contributes to the design and optimization of various technologies. By grasping the principles behind dynamical friction, students and professionals alike can better appreciate the complexities of motion and the forces that govern it. As we continue to explore the intricacies of physics, the role of dynamical friction remains a significant topic of interest, bridging the gap between theoretical concepts and practical applications.

在物理学的研究中，特别是在力学中，dynamical friction（动态摩擦）这一概念在理解物体运动方面起着至关重要的作用。dynamical friction指的是当两个接触表面相对滑动时，抵抗它们之间相对运动的摩擦力。与防止运动开始的静摩擦不同，dynamical friction在物体已经运动时发挥作用。这一区别对于分析各种物理系统至关重要，从简单的实验到复杂的机械装置。为了说明dynamical friction在现实生活中的重要性，可以考虑一辆汽车在道路上行驶。当轮胎在不打滑的情况下滚动时，它们经历的是静摩擦。然而，如果司机突然踩下刹车，车轮开始滑动，dynamical friction便接管了。dynamical friction的力量与运动方向相反，帮助减缓车辆的速度。这种力量的有效性取决于几个因素，包括接触表面的性质和将它们压在一起的法向力。dynamical friction的一个关键特征是它通常小于静摩擦。这意味着，保持物体运动通常比从静止状态开始运动所需的力量要小。在日常生活中可以观察到这一原则；例如，将一个重箱子推过地板，在它已经运动时所需的推力通常少于使其开始运动时所需的初始推力。理解这一概念可以帮助工程师设计更高效的机器和系统，从而减少因摩擦造成的能量损失。此外，dynamical friction还受到滑动物体速度的影响。随着速度的增加，由于温度和表面磨损等各种因素，摩擦力可能会发生变化。在许多情况下，dynamical friction可以通过经验方程进行建模，使科学家和工程师能够预测在不同条件下滑动物体的行为。这种预测能力在汽车工程等领域至关重要，因为精确计算摩擦力对于安全和性能是必要的。除了其实际应用外，dynamical friction的研究也具有理论意义。它与物理学中的更广泛概念相连接，例如能量守恒和热力学。当两个表面相互滑动时，由于dynamical friction，一些动能转化为热量，这可能导致所涉及材料的温度变化。这种运动与热能之间的相互作用是许多物理过程的基本方面。总的来说，理解dynamical friction对于任何学习力学或相关领域的人都是必不可少的。它不仅帮助解释滑动物体的行为，还促进了各种技术的设计和优化。通过掌握dynamical friction背后的原理，学生和专业人士都能更好地理解运动的复杂性以及支配运动的力量。随着我们继续探索物理学的复杂性，dynamical friction的角色仍然是一个重要的研究主题，架起了理论概念与实际应用之间的桥梁。