Abstract: The complexity and performance evaluation for process management are based on integrated product development (IPD). Four related evaluation methods are provided to focus on the our main features of IPD process complex system which are dynamic uncertainty, concurrent overlapping, multi – factors fuzziness and failure stochastic process. The methods are flexibility evaluation and reliability evaluation. The computation of the methods are also given.

Key words: Integrated product development, Performance evaluation, Process management, Biomechanics properties, Computational fluid dynamics, Finite element method, Vena cava filter