Recently manufacturers are increasingly adopting the simultaneous engi
neering concept in designing and developing new products to shorten pr
oduct development time while maintaining higher product quality and lo
wer manufacturing costs, as the concept of simultaneous engineering ha
s become a major product development practice of the late 1990s in the
world class manufacturing. In this paper, we propose a framework of a
Simultaneous Design Modeling Support System in which decisions on pro
duct design, process design and manufacturing system design are simult
aneously made at an initial stage of product development period. (C) 1
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