5.12.2 - Modal Stiffness
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Practice Questions
Test your understanding with targeted questions
What is modal stiffness?
💡 Hint: Think about how stiffness relates to vibration.
How is modal stiffness calculated?
💡 Hint: Consider the components of the formula.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does modal stiffness represent in structural dynamics?
💡 Hint: Focus on how stiffness applies to vibration.
True or False: Modal mass is not a factor in determining modal stiffness.
💡 Hint: Recall the formula k¿ = m¿ω².
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Challenge Problems
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A structure has a modal mass of 500 kg and its fundamental circular frequency is 4 rad/s. Calculate its modal stiffness and explain what this value implies for its seismic behavior.
💡 Hint: Use k¿ = m¿ω² for the calculation.
Discuss the role of modal stiffness in the design considerations for earthquake-resistant structures, providing examples of how it affects material selection and structural layout.
💡 Hint: Think of material properties and structural forms.
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