7.15 - Numerical Solution of Free Vibration (Finite Difference Method)
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Practice Questions
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What is the finite difference method?
💡 Hint: Think about how we might break up time into smaller sections.
Why might we need to discretize time?
💡 Hint: Consider why continuous equations can be challenging.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the finite difference method primarily address?
💡 Hint: Recall the primary uses of the method.
True or False: The finite difference method can model continuous systems with variable properties more effectively than analytical methods.
💡 Hint: Think about the advantages over analytical methods.
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Challenge Problems
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Using the finite difference method, if a system has a natural frequency of 5 rad/s and initial displacements of x(0)=0 and x(1)=0.1, calculate the displacement at the next time step given a Δt of 0.1 seconds.
💡 Hint: Start by identifying your constants and then plug into the formula appropriately.
Discuss the impact of increasing the time step size on the accuracy of results obtained from the finite difference method.
💡 Hint: Consider how a larger time step could skip details of the system's motion.
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