Research On Mechanical Product Design Process Optimization Driven By Process Value

With the rapid development of the global manufacturing industry and the continuous progress of technology,mechanical products are increasingly widely used in daily life and production.The design process of mechanical products has a crucial impact on the quality and cost of products;At the same time,the level of design in a country has an important impact on product competitiveness,manufacturing level,innovation ability,and people’s quality of life.Countries have strengthened their investment in the design industry to improve the national design level,and optimizing the design process of mechanical products has become a hot research field.Currently,methods such as multi-objective optimization and fuzzy comprehensive evaluation have been applied to the research of mechanical product design process optimization.However,due to the characteristics of design processes such as strong abstraction,difficulty in quantitatively expressing internal laws,and ease in quantifying external characteristics,existing research mostly describes the design process by modeling the external manifestations of design processes such as time,cost,and product quality,There is little modeling and expression of the internal operation rules of the design process,and there is a lack of expression and evaluation of the overall performance of the design process.In order to optimize the design process of mechanical products,it is necessary to consider the optimization of multiple indicators,among which there are different priorities.How to reasonably optimize the design process with multiple objectives remains a challenge.In order to solve the current problems,this article mainly carried out the following five research work:(1)Propose the concept of process value and analyze its compositionPropose the concept of process value,and clarify the role of proposing process value in overcoming the one-sidedness of previous research on the characteristics or variables of the design process to evaluate the design process.Explore the impact of customer needs,resource costs,time costs,design information,and design process structures on the design process,analyze and provide the composition of process value,and analyze how each constituent element affects the process value of the mechanical product design process from the perspective of the operational rules of the design process.(2)Constructing a Value Driven Framework for Mechanical Product Design Process OptimizationUsing the concept and implementation steps of value engineering,starting from the internal operation rules of the design process,and taking the internal functions and external performance of the design process as the evaluation basis,a value-driven framework for mechanical product design process optimization is constructed,which solves the multiobjective nature of mechanical product design process optimization research and the difficulty of directly optimizing the overall design process,Guide enterprises to optimize the mechanical product design process from both functional and cost aspects.(3)Constructing a process value model to describe the mechanical product design processUsing the method of mathematical model,based on the principle of evaluating the design process from the perspective of function and cost based on process value,mathematical models are constructed to express the function and cost of the mechanical product design process.By integrating the function model and cost model,a mathematical model of the process value of the mechanical product design process is constructed.The process value model analyzes how each constituent element has an impact on the process value of the mechanical product design process from the perspective of the inherent operating rules of the design process,overcoming the one-sidedness of previous research on the characteristics or variables of the design process to evaluate the design process.(4)An evolutionary particle swarm optimization algorithm for mechanical product design process optimization is proposedIn view of the serial,parallel,coupling,and other dependencies between design activities in the mechanical product design process,as well as time and resource constraints,the design process structure is constructed using a combination of Johnson Trotter algorithm and penalty terms.Penalty functions are used to express the constraints,and dual fingers are used to record the time of the design process.Evolutionary particle swarm optimization(EPSO)is obtained through evolutionary processing of the particle swarm algorithm.This algorithm can achieve the arrangement and traversal of the design process structure.During the simulation process,each time the design process structure is updated,the particle swarm optimization algorithm is first used to simulate different resource allocation strategies for the mechanical product design process,calculate the maximum value of the process,and record the current design process structure,resource allocation strategies,and the duration of each design activity.(5)Process Value Driven Mechanical Product Design Process OptimizationBased on the established mathematical model of design process value,a product design process optimization model based on maximizing process value was proposed and constructed using a nonlinear single objective optimization method.Combining optimization models and algorithms,this paper conducts optimization research on the design process of a typical mechanical product,obtains the cost,function,and value of the optimized design process,and provides optimized design process parameters and resource allocation strategies.Achieved process optimization application research under this optimization goal,helping enterprises choose better design process structures and resource allocation strategies.The research in this paper proposes process value,a comprehensive indicator that can be used to evaluate the design ability of mechanical product design processes.Through example verification,it has a positive role in assisting designers in decision-making.The proposed process value based optimization method for mechanical product design process can help enterprises choose better design process structures and resource allocation strategies.