Sheet Lightning - Standard Parametric Libraries
Sheet Lightning is supplied with a comprehensive library of standard designs. These design can be loaded and altered by simply changing dimension values. The standard library designs at the time of release are
categorised below. The library continues to expand as customer requests are submitted. They are categorized as follows:
Special Parametric Design
Examples of CAD Designs
CAD Design Gallery
Fun CAD Design Example
These designs have all been
developed using the full 3D CAD program. In addition to these there is also a special parametric designs (accessed through the 'Special' menu) for creating Swept Bends (i.e. also know as segmented bends,
Lobster back bends or elbows) and other more complex designs involving not just alteration of dimensions but generation of objects in response to parametric input.
All the standard parametric designs
have been created using the CAD design environment and then parameterized using the command 'File|Convert to Parametric' (not available in Sheet Lightning Lite). The library includes most standard designs
but can be extended further using the Sheet Lightning (ful version) convert facility. The process of creating new parametric designs from CAD designs is know as ‘Design Parametrization'.
include all forms of bends/elbows, tees, junctions/cross-overs, square-to-round adapters, divertors, ovals, oval-to-square/round/oval adapters. Many of them provide for 'oblique offset' or 'skewing'
of the design. Other designs may be also available through the Revcad website, third-party vendors or via the design services oprated by Revcad and/or third parties.
The adapters available in the library at the time of release include adaptions between circular, rectangular, radius
rectangle and oval sections with or without oblique skew.
One of the designs provides all the required parameters to provide for universal section to section adaption. This takes the form of a radius
rectangle andapting to a radius rectance of different proportions with oblique skewing in X and Y directions. By zeroing parameter this design can be reduced to any of the other adapters shown.
Fig: Library - Universal Adapter
The library of adapters is as follows:
Fig: Library - Parametric Adapters
The bends available in the library at the time of release are shown below. One of the designs
provides all the required parameters to provide for a universal bend. This takes the form of two tapered radius rectangle objects adapting to a radius rectance of different proportions with
oblique skewing in X and Y directions. By zeroing parameter this design can be reduced to any of the other adapters shown.
Fig: Library - Universal Bend (Uncut)
Fig: Library - Universal Bend (Cut)
The library of bends is as follows:
Fig: Library - Parametric Bends
The parametric tee intersections available in the library at the time of release are shown below.
The library tees are divided into sections with and without take-off offset. Tee with offset are provided and 90 degree, a specified angle, with and without matching to maximize the intersection.
Fig: Parametric Tees - No Offset
The offset tees have more variation with a 3 different matching options. They can be unmatched,
edge matched or oblique matched. All these options maintain the offset at the open end face of the tee off. The normal offset tees with matching do no adjust the offset during the match
process, but the joining section is proportionally adjusted to achieve a perfect edge match at one of the edges (matching at both edges would require either offset displacement or turning). An
oblique (or skew) match achieves the matching at both edges by skewing the part whilst maintaining the offset of the end face of the tee-off.
These are the parametric normal offset tees with no matching and edge matching.
Fig: Library - Parametric Tees - Normal Offset
These are the parametric offset tees with oblique matching.
Fig: Library - Parametric Tees - Oblique Offset
A number of flow divertors are included in the parametric library, with turned and oblique/skew branching:
Fig: Library - Parametric Divertors
A number of junctions/crossovers are included in the parametric library:
Fig: Library - Parametric Junctions
The library includes basic single objects including simple cones and cyliders, with and without oblique skewing:
Fig: Library - Parametric Simple Designs
The following special and miscellaneous designs are included in the design library:
Fig: Library - Parametric Special