ENCN221 Exam 1 Questions & Answers 2024/2025
Force - ANSWERSInteraction between two bodies that when left unopposed will change momentum
Components of Displacement - ANSWERSRigid body motion, rotation, deformation
Deformation - ANSWERSChanges in distance between material points and chang...
Force - ANSWERSInteraction between two bodies that when left unopposed will change momentum
Components of Displacement - ANSWERSRigid body motion, rotation, deformation
Deformation - ANSWERSChanges in distance between material points and changes in angles between
material fibres
What does an applied force produce? - ANSWERSA deformation that is dependent on the geometry of a
structure (thickness/length) and its material
Homogeneous - ANSWERSThe same in space - uniform throughout.
Heterogeneous - ANSWERSDifferent in space - visually distinguishable components
How to scale force for change in area or length - ANSWERS(control force) x (deltaL) = ((control L/A) /
(changed L/A)) x (changed force) x (deltaL)
Generalised formula for force scaling - ANSWERS(control force) x (deltaL) = ((control A) / (changed A)) x
(force changed) x ((control L) / (changed L)) x (deltaL)
Stress (sigma) formula (eng) - ANSWERSsigma = F/Aref
Strain (epsilon) formula (eng) - ANSWERSepsilon = deltaL / L ref
Stress strain relationship - ANSWERSObserved stress vs strain relation is independent of geometry
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