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Biomech/mat Exam 1 > Moduluses > Flashcards

Moduluses Flashcards

1
Q

Stiffness(flexibility)

A

Ultimate load and elongation

Determined from load displacement curve

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2
Q

Deformation

A

Change in geometry of body

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3
Q

Stiffness

A

Slope of load-deformation curve

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4
Q

Flexibility

A

Slope of deformation-load curve

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5
Q

Ultimate load

A

Highest load achieved

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6
Q

Max elongation

A

Deformation at ultimate load

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7
Q

Stress

A

Normalized internal force

Reaction to external force

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8
Q

Normal force

A

Changes length

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9
Q

Shear force

A

Sliding down

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10
Q

Strain

A

Rate of deformation due to applied stresses

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11
Q

Types of deformation

A

Length change
Normal strain
Shape change
Shear change

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12
Q

Modulus of elasticity

A

Slope of elastic region

Young’s modulus of elasticity

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13
Q

Yield strength

A

Highest stress material can withstand without undergoing significant yielding and permanent deformation

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14
Q

Perfectly plastic zone

A

Specimen continues elongation with out any increase in stress

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15
Q

Ultimate strength

A

Stress increases
Known as strain hardening
Stress at end is ultimate stress

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16
Q

Necking

A

Stress drops

Continues until fracture occurs

17
Q

Poissons ratio

A

Related change In length to change in height (height)/(length)

18
Q

Bulk modulus of elasticity

A

Change in volume/unit volume

Measure of compressibility

19
Q

Creep

A

Viscoelastic property

Tendency of material to deform permanently under constant stress while still under yield strength

20
Q

Stress relaxation

A

Viscoelastic property

Observed decrease in stress I. Response to same stress over time

21
Q

Anisotrophy

A

Exhibiting different properties with different values when measured in different directions

22
Q

Heterogeneity

A

Properties differ by location

23
Q

Incompressibility

A

Ability to maintain constant volume

24
Q

Residual stress

A

Stress retained even after force is removed

25
Q

Remodeling

A

Intrinsic property, content and geometry alter based in external triggers

Biomech/mat Exam 1 (3 decks)

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