rigid body

简明释义

刚体

英英释义

例句

1.In robotics, understanding how a rigid body interacts with its environment is crucial for design.

在机器人技术中，理解刚体如何与环境相互作用对设计至关重要。

2.In physics, a rigid body is defined as an object that does not deform under the application of forces.

在物理学中，刚体被定义为在施加力时不会变形的物体。

3.The conservation of momentum applies to a rigid body when it collides with another object.

动量守恒定律适用于一个刚体与另一个物体碰撞时。

4.The motion of a rigid body can be described using rotational dynamics.

一个刚体的运动可以通过旋转动力学来描述。

5.Engineers often analyze the behavior of a rigid body to ensure structural integrity.

工程师们常常分析刚体的行为以确保结构的完整性。

作文

In the field of physics and engineering, the concept of a rigid body (刚体) plays a crucial role in understanding the mechanics of objects. A rigid body is defined as an idealized solid object that does not deform or change shape when subjected to external forces. This assumption simplifies the analysis of motion and forces acting on the body, allowing engineers and physicists to predict how objects will behave under various conditions.One of the fundamental principles involving rigid bodies is the study of equilibrium. When a rigid body is in equilibrium, the sum of all forces and moments acting on it is zero. This means that the body remains at rest or moves with a constant velocity. For instance, consider a book resting on a table. The gravitational force pulling the book downward is balanced by the normal force exerted by the table upwards. In this scenario, the book can be considered a rigid body, as it does not change shape despite the forces acting on it.Another important aspect of rigid bodies is their rotational motion. When a rigid body rotates around an axis, it exhibits angular motion characterized by parameters such as angular velocity and moment of inertia. The moment of inertia is a measure of how mass is distributed relative to the axis of rotation. For example, a spinning disk and a solid sphere both qualify as rigid bodies, but they have different moments of inertia due to their shapes and mass distributions. Understanding these differences is essential for applications ranging from mechanical design to robotics.The analysis of rigid bodies extends to various real-world applications. For instance, in civil engineering, the structural integrity of buildings and bridges relies on the principles governing rigid bodies. Engineers must ensure that these structures can withstand loads without deforming significantly. Similarly, in automotive engineering, the dynamics of vehicles involve studying how rigid bodies interact with forces during acceleration, braking, and cornering.Moreover, the concept of rigid bodies is not limited to static scenarios; it also applies to dynamic situations. When a rigid body is subjected to a sudden impact, such as a car collision, the analysis must consider both translational and rotational motions. The study of collisions involves understanding how momentum and energy are conserved, and how the rigid body responds to the forces involved.In conclusion, the concept of a rigid body (刚体) is fundamental in mechanics, providing a framework for analyzing the behavior of solid objects under various forces and motions. Whether in equilibrium or in motion, the principles governing rigid bodies are essential for engineers and physicists alike. By simplifying complex interactions into manageable models, the study of rigid bodies enables advancements in technology and infrastructure, ultimately enhancing our understanding of the physical world.