ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
With the increasing demands of energy efficiency and environment protection, compositematerials have become an important alternative for traditional materials. Composite materials offermany advantages over traditional materials including: low density, high strength, high stiffness toweight ratio, excellent durability, and design flexibility. Despite all these advantages, compositematerials have not been as widely used as expected because of the complexity and cost of themanufacturing process. One of the main causes is associated with poor dimensional control. Generalcurved composite parts are often used as the structural components in the composite industry. Dueto the anisotropic material nature, process-induced dimensional variations make it difficult for tighttolerancecontrol and limit the use of composites.This research aims to develop a practical approach for the design of general curved compositeparts and assembly. First, the closed-form solution for the process-induced dimensional variations,which is commonly called spring-in, was derived. For a general curved composite part, a StructuralTree Method (STM) was developed to divide the curve into a number of pieces and calculate thedimensional variations sequentially. This method can be also applied to an assembly of compositeparts. The approach was validated through a case study. The method presented in this paperprovides a convenient and practical tool for the dimensional and tolerance analysis in the earlydesign stage of general curved composite parts and assembly, which is extremely useful for therealization of affordable tight tolerance composites. It also provides the foundation of IntegratedProduct/Process Development (IPPD) and Design for Manufacturing/Assembly (DFM/DFA) forcomposites
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.41-42.377.pdf
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