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The Solving Method of Simulating and Optimizing the Unified Multidisciplinary Constraint Model

This paper studies the modeling method based on the unified constraint complex systems for the complex products' design and analysis. The method solves the multi-domain optimization problems by a unified constraint model. For the multi-domain physical systems, the model cell's libraries of the machinery, electronic, hydraulic, control systems and other areas are established. A digitized functional prototype is set up by the calling unit with the visual interface to build the unified multidisciplinary constrained model for simulation and optimization. The product's multidisciplinary model for simulation and optimization is uniformly and restrictively expressed using the mapping implementation mechanism that the physical model is transferred into the mathematical model. The parameter sensitivity analysis on the unified constraint model can reduce the constraint size. The principle of the comprehensive satisfaction as great as possible can achieve the multidisciplinary constraint coordination based on the component's level, the constraint compatibility and singularity analysis of the products. The paper explores the method solving the unified large-scale multidisciplinary model of the simulation and optimization by the homotopy iteration.