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Flashcards in Moduluses Deck (25)
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1

Stiffness(flexibility)

Ultimate load and elongation
Determined from load displacement curve

2

Deformation

Change in geometry of body

3

Stiffness

Slope of load-deformation curve

4

Flexibility

Slope of deformation-load curve

5

Ultimate load

Highest load achieved

6

Max elongation

Deformation at ultimate load

7

Stress

Normalized internal force
Reaction to external force

8

Normal force

Changes length

9

Shear force

Sliding down

10

Strain

Rate of deformation due to applied stresses

11

Types of deformation

Length change
Normal strain
Shape change
Shear change

12

Modulus of elasticity

Slope of elastic region
Young's modulus of elasticity

13

Yield strength

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

14

Perfectly plastic zone

Specimen continues elongation with out any increase in stress

15

Ultimate strength

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

16

Necking

Stress drops
Continues until fracture occurs

17

Poissons ratio

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

18

Bulk modulus of elasticity

Change in volume/unit volume
Measure of compressibility

19

Creep

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

20

Stress relaxation

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

21

Anisotrophy

Exhibiting different properties with different values when measured in different directions

22

Heterogeneity

Properties differ by location

23

Incompressibility

Ability to maintain constant volume

24

Residual stress

Stress retained even after force is removed

25

Remodeling

Intrinsic property, content and geometry alter based in external triggers