| Girty,
G. 2002. Strain Machine, A Macromedia Director
8.5 Application for Introducing the Concepts of
Simple and Pure Shear. In: Bobyarchick, A. 2002.
Visualisation, Teaching and Learning in Structural
Geology. Journal of the Virtual Explorer, 9, 31-38.
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Strain
Machine
A Macromedia Director 8.5 Application for Introducing
the Concepts of Simple and Pure Shear
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| Figure 1.
The four components of deformation. Select an item and the click
on the Play button. |
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| Figure 2.
To distort the crinoid column by plane strain pure shear click on
the Distort button. R and RÍ are two material lines that are
shortened and lengthened during the distortion. |
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| Figure 3.
Select a type of strain and then click on the Play button. |
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| Figure 4.
To distort the crinoid column by plane strain simple shear click on
the Distort button. R and RÍ are two material lines that prior
to progressive simple shear were perpendicular. Following distortion,
the change in angle between R and RÍ is 24o. |
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| Figure
5. A Flash 5 animation illustrating the key elements in
the derivation of the transformation equation for two dimensional
simple shear. Select sequentially the items in the Show
Geometrical Element drop-down list. To see the equations
for the geometrical elements identified in the resulting animation,
select the item from the Show Equation For drop-down list. |
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| Figure 6.
A Flash 5 animation illustrating the key elements in the derivation
of the transformation equation for two dimensional pure shear. Select
sequentially the items in the Show Geometrical Elements drop-down
list. To see the equations for the geometrical elements identified
in the resulting animation, select the item from the Show Equation
For drop-down list. |
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