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FEA is a key product development tool, and remote FEA (finite element analysis) services via internet are an effective and economical way to popularizing FEA technology for different-sized manufacturing enterprises. For FEA grid portal, modeling technologies of FEA grid services and grid information management structure are presented in this paper. For modeling technologies of FEA grid service, workflow of FEA automatic analysis job, models of FEA grid service and data management are described. WSRF (Web service resource framework) based grid information management structure is presented, and an application scenario of remote FEA service is demonstrated by taking FEA parametric optimization job as example. The research results in this paper provide the basis for developing FEA Grid portal.