Method for the design and construction of composite parts

• US 4,849,913 A
• Filed: 04/10/1987
• Issued: 07/18/1989
• Est. Priority Date: 04/10/1987
• Status: Expired due to Term

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Ward, William E., Gumm, Jack R. Jr.
• Primary Examiner(s): RUGGIERO, JOSEPH F
• Application Number:
  US07/037,141
• Time in Patent Office: 830 Days
• Field of Search: 364/191-193, 364/468, 364/474, 364/475, 364/512, 364/300, 364/188, 364/189, 156/250, 156/252, 156/253, 156/256, 156/260, 156/264, 156/265, 156/58, 156/59, 156/64, 156/297, 156/378, 156/379.8
• US Class Current: 700/98
• CPC Class Codes: G05B 19/4097 characterised by using design data to control NC machines, e.g. CAD/CAM G05B19/4093 takes precedence
• CPC Class Codes: G05B 2219/49019 Machine 3-D slices, to build 3-D model, stratified object manufacturing SOM
• CPC Class Codes: G06F 2113/26 Composites
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y10T 156/1075 of plural laminae from single stock and assembling to each other or to additional lamina

Abstract

An improved system and method are designed to take engineering composite drawings released in a computer-aided design (CAD) data set, determine the attributes of each of the plies into its composite drawing, and pass the information on to using orgnizations. In preferred embodiments, the system logically determines the geometric definitions for each ply contained in a composite part and reports any errors to the user. Analysis of the physical properties of a part is also provided. Computation of the total part weight and centroid location is performed by the system. Additionally, the present invention creates detailed engineering models of each composite ply and passes information directly to manufacturing.

Claims

1. A system to aid in the design and manufacture of composite parts, the composite parts fabricated from a plurality of plies of material assembled and cured in a desired orientation and arrangement to form the part, the system comprising:

a central processing unit;

input means communicating with the central processing unit;

storage means communicating with the central processing unit;

means for inputting and storing information regarding the shape, orientation and location of the plies within the composite part;

means for isolating and defining individual plies within the part; and

means for allowing pierce point interrogation of the composite part to determine the structural properties at selected points on the part.

2. A system to aid in the design and manufacture of composite parts, the composite parts fabricated from a plurality of plies of material assembled and cured in a desired orientation and arrangement to form the part, the system comprising:

a central processing unit;

input means communicating with the central processing unit;

storage means communicating with the central processing unit;

means for inputting and storing information regarding the shape, orientation and location of the plies within the composite part;

means for isolating and defining individual plies within the part; and

means for interfacing with a finite element modeler to allow structural analysis of the complete part.

3. A system to aid in the design and manufacture of composite parts, the composite parts fabricated from a plurality of plies of material assembled and cured in a desired orientation and arrangement to form the part, the system comprising:

a central processing unit;

input means communicating with the central processing unit;

storage means communicating with the central processing unit;

means for inputting and storing information regarding the shape, orientation and location of the plies within the composite part;

means for isolating and defining individual plies within the part; and

means for calculating the weight and centroid of the composite part.

4. A system to aid in the design and manufacture of composite parts, the composite parts fabricated from a plurality of plies of material assembled and cured in a desired orientation and arrangement to form the part, the system comprising:

a central processing unit;

input means communicating with the central processing unit;

storage means communicating with the central processing unit;

means for inputting and storing information regarding the shape, orientation and location of the plies within the composite part;

means for isolating and defining individual plies within the part; and

means for selecting a desired cross section through a part and generating ply layer and thickness plots for the selected cross section.