关键词: 产品服务供应链, 风险规避, 售前服务, 优化策略

Abstract: Aiming at the product service supply chain consisted of a pre-sale service provider and a manufacturer,a cooperation contract problem was researched when the supply chain members were risk aversion.By building a mean-variance model,optimal equilibrium solutions were obtained under a decentralized and a centralized product service supply chain.Moreover,the impact of risk aversion coefficient on the optimal decision-making behavior was analyzed.The result showed that compared with the decentralized decision-making,the service provider's service level became higher and its utility became lower,while the manufacturer's utility increased significantly in the centralized decision-making.Therefore,a revenue-sharing contract was proposed that improved the supply chain system utility.Numerical examples showed that the utilities of two members were improved as long as the revenue-sharing coefficient was located in a certain range.Meanwhile,the more risk-averse the service provider was,the smaller the revenue sharing coefficient range would be,and the more risk-averse the manufacturer was,the greater the revenue sharing coefficient range would be.

Key words: product service supply chain, risk aversion, pre-sale service, optimal strategy