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动力学

Dynamics

课程介绍 Course Introduction

学分:3 | 先修课:静力学、微积分 | 学期:大二下

动力学研究物体的运动与受力之间的关系,是理论力学的核心内容之一。课程内容包括质点运动学、刚体运动学、质点动力学、刚体动力学、动能定理、动量定理、达朗贝尔原理以及振动基础。学生将学习运用牛顿第二定律、拉格朗日方程等方法分析机械系统的运动规律,为机械设计、机器人学和振动分析等后续课程提供理论支撑。

Dynamics studies the relationship between motion and forces, a core part of theoretical mechanics. Topics include kinematics and kinetics of particles and rigid bodies, work-energy principles, impulse-momentum methods, d'Alembert's principle, and vibration fundamentals. Students analyze mechanical system motion using Newton's laws and Lagrange's equations, providing theoretical support for machine design, robotics, and vibration analysis.

大作业 Final Project

作业标题:曲柄滑块机构动力学分析

学生需对给定参数的曲柄滑块机构进行完整动力学分析,包括运动学分析(位移、速度、加速度)、受力分析(含惯性力)、平衡分析及飞轮设计计算。要求建立机构运动方程,绘制运动线图,并讨论机构参数对动力学性能的影响。最终提交分析报告及MATLAB仿真结果。

Students perform complete dynamic analysis of a slider-crank mechanism, including kinematic analysis (displacement, velocity, acceleration), force analysis with inertial forces, balancing, and flywheel design. Establish motion equations, plot kinematic curves, and discuss the influence of parameters. Submit a report with MATLAB simulation results.