Analysis of Impact of Requirement Change on Product Development Progress Based on System Dynamics

Requirement changes occur frequently during the product development process owing to diverse and personalized customer needs. This necessitates multiple reworks of task, causing delays. Therefore, it is necessary analyze impact requirement change on progress development. First, task divided into three phases: concept development, detail design, pilot production. Reworks that are a result error or in information analyzed along with caused by changes, which focus analysis. Then, activities relationships quantitatively described, simulation model built based system dynamics method. combined practice case analyzed. The analysis shows greatly increase duration uncertainty schedule. schedule most sensitive deadline for change, occurring at later phase greater.