The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2014
Filed:
Jun. 20, 2011
Mostafa Rassaian, Bellevue, WA (US);
Matthew Todd Grimshaw, Seattle, WA (US);
Thomas A. Grandine, Issaquah, WA (US);
Matthew Steven Patterson, Seattle, WA (US);
Adriana Willempje Blom, Lake Forest Park, WA (US);
Mostafa Rassaian, Bellevue, WA (US);
Matthew Todd Grimshaw, Seattle, WA (US);
Thomas A. Grandine, Issaquah, WA (US);
Matthew Steven Patterson, Seattle, WA (US);
Adriana Willempje Blom, Lake Forest Park, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A computational optimization process uses the variable stiffness performance of composite laminates attributed to steered fiber to guide the design of stream functions describing the fibers to build it. This design process combines a finite element-based analysis tool, failure criteria and geometry optimization to determine steered angles associated with stream functions by an optimization program to meet target performance requirements, e.g., load condition(s), and failure criteria for quasi-static or dynamic events. The fiber angle distribution and thickness buildup are computed based on the stream function. The simulated structure is analyzed using finite element analysis. The disclosed process allows the designer to impose manufacturing constraints such as fiber steering radius.