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grams Layout design Control and release layout Control and release layout customer Documentation Empirical Data Simulation Data Time Degree of Completion [%] Time Degree of Completion [%] ? Smallsized German pany (electronics branch) ? Data collection via barcodebased labor time system ? Parameterization of the simulation model ? Hypothesis testing ? Sensitivity analysis Development Tasks: 169。 Hardware ? Rapid Prototyping Tools ? Virtual Reality Tools ? ... 169。 2020 Prof. Christopher Schlick ? RWTH Aachen University ? IAW Institute of Industrial Engineering and Ergonomics 7 Conceptual Model (III) Product Operational Structure Organizational Structure Working Persons Tools 11 1 1 1 nor ga niz a tion a l unit1mOr ga nis a tion h246。 2020 Prof. Christopher Schlick ? RWTH Aachen University ? IAW Institute of Industrial Engineering and Ergonomics 3 Why simulation? (II) Classical Project Planning Methods ? GanntCharts ? CPM Critical Path Method ? PERT Program Evaluation and Review Technique Weaknesses of Classical Methods ? No iteration loops ? Task lead times are considered as independent of each other ? No functional consideration of available resources Task A Task B Task C 2020 2020 2020 slack Task A ES Duration EF LS LF Task A Duration BetaDistribution not suitable for management of plex product development projects 169。 2020 Prof. Christopher Schlick ? RWTH Aachen University ? IAW Institute of Industrial Engineering and Ergonomics 2 Why simulation?