Modal analysis

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/modal-analysis

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific discipline?Structural Dynamics and Experimental Mechanics
2. What is the core parameters identified?Natural frequencies, damping ratios, and modeshapes
3. What is modal analysis and why do scientists make things wiggle?Modal analysis is a way to study how a structure naturally vibrates. By gently shaking it, scientists can see its special vibration patterns, called modes.
4. How do engineers find the different ways a bridge or car part can vibrate?They hit the part with a hammer or use small shakers, then measure the motion with sensors. The data shows each mode’s frequency and shape.

Frequency Domain: Analysis method focusing on the frequencies at which a system vibrates.
Modeshape: The spatial pattern of deformation of a structure when vibrating at a specific natural frequency.
Damping Ratio: A measure of how quickly vibrations decay in a system.
Transfer Function: A mathematical representation of how an output signal relates to an input signal in the frequency domain.