基于多重网络的复杂产品工程变更传播影响评估

Impact assessment of engineering change propagation for complex products based on multiplex network

针对传统复杂产品工程变更传播的影响评估过程中,未综合考虑零部件间多种关联关系对变更传播的共同作用的问题,将多重网络理论应用于复杂产品建模中。首先,将复杂产品零部件及其功能、行为、结构关联关系抽象为多重网络,从而探究不同关联关系对工程变更传播的影响机制;然后,利用改进的全面距离指标对网络中各节点重要度进行评估;最后,使用易感-感染-易感模型对复杂产品工程变更传播影响进行定量评估。以某型号柴油发动机的工程变更传播影响评估为例,验证所提出方法的有效性。结果表明:多重网络模型可以对拥有不同类型关联关系的复杂产品进行充分描述;改进的全面距离指标较好地提升了对同核度节点重要度的区分能力;高重要度零部件发生变更会使得工程变更在整个产品范围内发生雪崩式传播。

In the process of traditional impact assessment of engineering change propagation for complex products,the joint effect of different association relationships among parts on change propagation is not comprehensively considered.Therefore,the multiplex network theory was applied to the modeling of complex product. Firstly,to explore the impact of different association relationships on engineering change propagation,the parts of a complex product and their functional,behavioral and structural association relationships were abstracted to a multiplex network. Then,the improved all-around distance index was used for evaluating the importance degrees of nodes in the multiplex network. Finally,the SusceptibilityInfection-Susceptibility(SIS)model was used to quantitatively assess the impact of engineering change propagation. To verify the effectiveness of the proposed method,the impact assessment of engineering change propagation of a type of diesel engine was taken as an example. Results demonstrate that:the multiplex network can fully describe complex products with different types of association relationships;the improved all-around distance index increases the ability to distinguish the importance degrees of nodes with the same coreness;the change in high-important parts will cause the avalanche propagation of engineering change throughout the product range.