DK Ching VD - Shell

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Last updated 2:53 AM on 6/23/26
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21 Terms

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shell

a thin, curved plate structure, shaped to transmit applied forces by compressive, tensile, and shear stresses acting in the plane of the surface

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thin shell

a shell structure constructed of reinforced concrete

<p>a shell structure constructed of reinforced concrete</p>
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translational surface

a surface generated by sliding a plane curve along a straight line or over another plane curve

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membrane stresses

the compressive, tensile, and shear stresses acting in the plane of the surface of a shell structure

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barrel shell

a rigid cylindrical shell structure

<p>a rigid cylindrical shell structure</p>
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cylindrical surface

a surface generated by sliding a straight line along a plane curve, or vice versa

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elliptical paraboloid

a surface generated by sliding a vertical parabola with downward curvature along a perpendicular parabola with downward curvature

<p>a surface generated by sliding a vertical parabola with downward curvature along a perpendicular parabola with downward curvature</p>
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hyperbolic paraboloid

a surface generated by sliding a parabola with downward curvature along a parabola with upward curvature, or by sliding a straight-line segment with its ends on two skew lines; also called "hypar"

<p>a surface generated by sliding a parabola with downward curvature along a parabola with upward curvature, or by sliding a straight-line segment with its ends on two skew lines; also called "hypar"</p>
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paraboloid

a surface all of whose intersections by planes are either parabolas and ellipses or parabolas and hyperbolas

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saddle surface

a surface having an upward curvature in one direction and a downward curvature in the perpendicular direction

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anticlastic

having opposite curvatures at a given point

<p>having opposite curvatures at a given point</p>
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ruled surface

a surface generated by the motion of a straight line

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conoid

a ruled surface generated by sliding a straight line with one end on a straight-line segment and the other on a plane curve

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hyperboloid

a surface having a finite center with certain plane sections that are hyperbolas and others that are circles or ellipses

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rotational surface

a surface generated by rotating a plane curve about an axis

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synclastic

having similar curvatures at a given point

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one-sheet hyperboloid

a ruled surface generated by sliding an inclined line segment on two horizontal circles

<p>a ruled surface generated by sliding an inclined line segment on two horizontal circles</p>
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spherical surface

a rotational surface generated by the revolution of a circular arc about a vertical axis

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elliptical surface

a rotational surface generated by the revolution of a half ellipse about a vertical axis

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parabolic surface

a rotational surface generated by the revolution of a parabola about a vertical axis

<p>a rotational surface generated by the revolution of a parabola about a vertical axis</p>
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torus

a doughnut-shaped surface generated by the revolution of a circle about an exterior line lying in its plane

<p>a doughnut-shaped surface generated by the revolution of a circle about an exterior line lying in its plane</p>