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Abstract:
Based pm
this situation, a brand new concept, ideal functional material
components (IFMC), will be presented. IFMC is designed with best
functional use, and is constructed by continuously varying material
composition, microstructure, non-homogeneous materials and homogeneous
materials. One of the typical IFMC is heterogeneous material component,
exhibiting continuously varying materials composition and
microstructure, offering designers the advantages of tailoring
structures and materials to meet a variety of property and performance
requirements to suit the changing and demanding of environment. However,
the wide variety of component geometry and topology, material
combination and architecture poses a bewildering problem of design and
manufacturing. Thus an appropriate, and furthermore innovative, theory
and technique are proposed for the digital concurrent design and
manufacturing (DCDM) of IFMC. With DCDM of IFMC, material composition
and geometry as well as microstructure of the component can be digitally
designed simultaneously, then the material and component, including its
material structure and composition and three-dimensional shape, can be
manufactured concurrently by means of the digital design information. In
order to clarify the concept and connotation of DCDM, the states-of-the
art and developing trends o mechanical manufacturing, material design
and computational mechanics are analyzed, and the associated theories
and methods are reviewed and explained. Apparently, it would come to
true in the near future that IFMC be designed and manufactured as a
building be done.
Key words:
Heterogeneous objects Layered manufacturing Material design
Ideal functional material component Digital concurrent design and
manufacturing
CLC No: TH16 TG139 TB33 TP391
国家自然科学基金资助项目. Received 20000214,
received in revised form 20001128
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