# Course Websites

## ME 340 - Dynamics of Mechanical Systems

### Last offered Spring 2024

#### Official Description

Dynamic modeling of mechanical components and systems; time-domain and frequency-domain analyses of linear time-invariant systems; multi-degree-of-freedom systems; linearization of nonlinear systems. Course Information: Credit is not given toward graduation for ME 340 and either SE 320 or AE 353. Prerequisite: MATH 285 or MATH 286 or MATH 441; TAM 212; credit or concurrent registration in MATH 257 or MATH 415; credit or concurrent registration in ECE 205. Class Schedule Information: Students must register for one lab and one lecture section.

#### Detailed Course Description

Dynamic modeling of mechanical components and systems; time domain and frequency domain analysis of linear time invariant systems; multi-degree of freedom systems; linearization of nonlinear systems. Prerequisite: TAM 212, MATH 285 and concurrent registration in ECE 205/206, and MATH 415. 3.5 undergraduate hours. Students may not receive credit for this course and any of the following: GE 320 and AAE 353.

TOPICS:

1. Laplace transformation: properties, inverse transformation, solutions of differential equations by Laplace transform, transfer functions - poles and zeroes.

2. Modeling of dynamic systems: principles of conservation - mass, energy, fluid flow, heat transfer, mechanical/electromechanical systems, state(phase) space representation.

3. Dynamic system classification, linearization of nonlinear systems, dynamic simulation.

4. Time domain analysis of linear time invariant systems: first and second order systems, time constant, damping ratio and natural frequency, impulse response and convolution integral.

5. Frequency domain analysis: frequency response, application to vibration isolation, base excitation, measurement systems, Fourier series analysis.

6. Multi-degree-of-freedom systems: natural frequencies and normal modes, applications to beat generation and vibration absorbers.

LABORATORY PROJECTS:

1. Mathematical preliminaries. Complex numbers; partial fractions; eigenvalues and eigenvectors; MATLAB computations and graphing of real- and complex-valued functions.

2. First-order systems. Exponentially decaying signals; free and step responses of linear, time-invariant first-order systems; time constant; system identification; physical experiments with a leaking tank and a hydraulic motor.

3. Block diagrams and simulation. Time- and frequency-domain block diagrams with integrators amplifiers; Laplace transforms and transfer functions; SIMULINK realizations; numerical experiments with a mechanical suspension, a nonlinear pendulum, and a quarter-car model.

4. Second-order systems. Exponentially decaying harmonic signals; free, step, and unit impulse responses of linear, second-order time-invariant systems; natural frequency and damping ratio; under-, critically-, and over-damped systems; system identification; physical experiments with a single-degree-of-freedom spring-mass-damper system.

5. Mode shapes and resonance. Natural frequencies and modal oscillations; harmonic excitation; steady-state response; physical experiments with a two-degree-of-freedom spring-mass-damper system.

6. Continuous systems. Boundary-value problems for cantilevered and clamped-clamped beams; natural frequencies and modal oscillations; modal decompositions; harmonic excitation and resonance; physical experiments with a cantilevered beam; simulations with a finite-element model.

7. Nonlinear systems. Lagrange’s equations; equilibrium configurations; linearization and stability; simulation and physical experiments with a double pendulum.

ME: Required.

TitleSectionCRNTypeHoursTimesDaysLocationInstructor
Dynamics of Mechanical SystemsAB137359LAB01200 - 1350 M  3073 Electrical & Computer Eng Bldg Hyungsoo Kang
Dynamics of Mechanical SystemsAB237361LAB01600 - 1750 M  3073 Electrical & Computer Eng Bldg Alireza Askarian
Dynamics of Mechanical SystemsAB337362LAB01000 - 1150 T  3073 Electrical & Computer Eng Bldg Hyungsoo Kang
Dynamics of Mechanical SystemsAB437364LAB01300 - 1450 T  3073 Electrical & Computer Eng Bldg Hyungsoo Kang
Dynamics of Mechanical SystemsAB537365LAB01500 - 1650 T  3073 Electrical & Computer Eng Bldg Praveen Prakash
Dynamics of Mechanical SystemsAB638941LAB01200 - 1350 W  3073 Electrical & Computer Eng Bldg Alireza Askarian
Dynamics of Mechanical SystemsAB745528LAB01600 - 1750 W  3073 Electrical & Computer Eng Bldg Alireza Askarian
Dynamics of Mechanical SystemsAB860960LAB01000 - 1150 R  3073 Electrical & Computer Eng Bldg Praveen Prakash
Dynamics of Mechanical SystemsAB961593LAB01300 - 1450 R  3073 Electrical & Computer Eng Bldg Praveen Prakash
Dynamics of Mechanical SystemsABA61594LAB01500 - 1650 R  3073 Electrical & Computer Eng Bldg Liyuan Zhang
Dynamics of Mechanical SystemsABB76108LAB01000 - 1150 F  3073 Electrical & Computer Eng Bldg Liyuan Zhang
Dynamics of Mechanical SystemsABC76109LAB01000 - 1150 W  3073 Electrical & Computer Eng Bldg Liyuan Zhang
Dynamics of Mechanical SystemsAL137356LEC3.51400 - 1450 M W F  3101 Sidney Lu Mech Engr Bldg Srinivasa M Salapaka
Dynamics of Mechanical SystemsAL237357LEC3.51400 - 1450 M W F  4100 Sidney Lu Mech Engr Bldg Matthew West