Based On The Cost Of The Virtual Design Control Study

As China joined the WTO, the enterprises in our country began to meet with fiercer competition. How to reduce the product cost as well as increase the productivity has been the key point of improving the competitiveness of all the enterprises. As a result, more and more enterprises begin to attach importance to the cost management. As some studies the product design expense only accounts for about five percent of the product total cost, but actually has decided seventy percent to eighty percent of the product cost. The inadequate of products technology and economy caused by design can't be retrieved by control measure in the production process. Therefore, carry on the cost control during the design stage can in the very great degree enhance the enterprise whole cost control level.Applying virtual design technique to the research of the products cost controls can solve the problem of cost control in early design. This text research the products cost controls in terms of accounting, and combining the relevant knowledge of the domain of engineering, for instance: Concurrent engineering, virtual reality and artificial technology, computer-aided technique etc. Putting forward the thinking of construct cost control system based on virtual design. The system is a circulatory system and made up of five parts: cost target determination, cost target breakdown, cost estimate, cost analysis, cost reduction and controls. Firstly confirm the cost target of the products by the expect prices what consumers approved of most deduct goal profit. After determine the cost target, decompose the cost target to feature level according to product structure. Using parameterized modeling method based on features carry on part modeling technique of product during the step of virtual modeling. And assemble the parts into products during the course of virtual assembly stages. Subsequently compare the cost estimated during the stages of virtual design with cost target. If the estimate cost is lower than the cost target. Carry on the subsequent steps. If the estimate cost is higher than the cost target. Carry on cost analysis. According to the analysis results of cost structure and cost difference. The designer can take a series of measures to lower costs: Such as optimizing the design plan, optimize the size of the part, reduce the cost of material etc. Finally apply the thinking framework to the cost control during design stage of pressure relief valve.