Strategy Research Of Early Supplier Involvement In The Multi-organization Collaborative Product Development

Global market competition requires manufacturing enterprises to improve their product development for more specialized and more collaboration among enterprises. Shortening time of product development is of importance for market success of production and survive of enterprises. In the collabotative product development, Early Suppler Involvement(ESI) is one of the most way for shortening time of product development. Based on several projects,the whole dissertation focuses on selecting strategies of ESI in the product development from a perspective of knowledge accumulation and design rework,chiefly including some key issues:when to supplier involve product development, the relation between the frequcy of information exchange and the time of ESI and profits distribution between them.In view of the design task as indictor for ESI,the dissertation respectively proposes knowledge accumulation function(KAF) and design rework function(DRF) considering factors of innovation of design task,importance of upstream information and R&D competency.the interrelations of the factors are disccussed.Based Design Structure Matrix(DSM),the dissertation proposes the dynamics information depency function among design tasks.Through a model of suppler involvement new product development process in case of single-information transmission,the relation between technology competency of supplier and the optimal involvement time in the collaborative peoduct development was discussed. The results are proved correct in the references and the maximum influence of technology competency of supplier to the optimal involvement time was found.Based on the results,some principles about selecting optimum R&D team for the design task was discussed.There is an interaction function among the downstream suppler involvement time and the frequncy of information communication between upstream task and downstream suppler. In the considering information communication, a variable of global gain was constructed considering trade-off between product development time and supplier's cost, the existence of maximum of global gain was proved. Based on this, the computing formulas of optimal involvement time and communication frequency was respectively given, and the strategy for Early Supplier Involvement (ESI) was presented. The profits distribution between supplier and manufacturer was analyzed with Nash bargaining model.Design crashing through effectively R&D resource allocation is an attractive method for shortening time of product development in the multi-organization product development. Based on knowledge accumulation function,the concept and model of design crashing was presented,and the upper limits on the impact of design crashing on shortening time of product development was proved. With principal-agent theory,the trade-off both design crashing cost and shortening time of product development was respectively discussed under information symmetric and information asymmetry.Finally,this dissertation introduces an implementation in the new bus product development of Chongqing Hengtong Bus Co., Ltd. ,which testified the advancement and practicability of research achievements in this dissertation.