TY - BOOK
T1 - Destocking, the bullwhip effect, and the credit crisis : empirical modeling of supply chain dynamics
AU - Udenio, M.
AU - Fransoo, J.C.
AU - Peels, R.
PY - 2013
Y1 - 2013
N2 - In this paper we analyze the strong sales dip observed in the manufacturing industry at
the end of 2008, following the bankruptcy of Lehman Brothers and the subsequent collapse
of the financial world. We suggest that firms’ desire to retain liquidity during these times
prompted a reaction characterized by the reduction of working capital, which materialized
as a synchronized reduction in target inventory levels across industries. We hypothesize
that such a reaction effectively acted as an endogenous shock to supply chains, ultimately
resulting in the demand dynamics observed. To test this proposition we develop a system
dynamics model that explicitly takes into account structural, operational, and behavioral
parameters of supply chains aggregated at an echelon level. We calibrate the model for use
in 4 different business units of a major chemical company in the Netherlands, all situated
4 to 5 levels upstream from consumer demands in their respective supply chains. We show
that the model gives both a very good historical fit and a prediction of the sales developments
during the period following the Lehman collapse. We test the model’s robustness to
behavioral parameter estimation errors through sensitivity analysis, and the de-stocking hypothesis
against an alternative model. Finally, we observe that the empirical data is aligned
with experimental observations regarding human behavioral mechanisms concerning target
adjustment times.
AB - In this paper we analyze the strong sales dip observed in the manufacturing industry at
the end of 2008, following the bankruptcy of Lehman Brothers and the subsequent collapse
of the financial world. We suggest that firms’ desire to retain liquidity during these times
prompted a reaction characterized by the reduction of working capital, which materialized
as a synchronized reduction in target inventory levels across industries. We hypothesize
that such a reaction effectively acted as an endogenous shock to supply chains, ultimately
resulting in the demand dynamics observed. To test this proposition we develop a system
dynamics model that explicitly takes into account structural, operational, and behavioral
parameters of supply chains aggregated at an echelon level. We calibrate the model for use
in 4 different business units of a major chemical company in the Netherlands, all situated
4 to 5 levels upstream from consumer demands in their respective supply chains. We show
that the model gives both a very good historical fit and a prediction of the sales developments
during the period following the Lehman collapse. We test the model’s robustness to
behavioral parameter estimation errors through sensitivity analysis, and the de-stocking hypothesis
against an alternative model. Finally, we observe that the empirical data is aligned
with experimental observations regarding human behavioral mechanisms concerning target
adjustment times.
M3 - Report
T3 - BETA publicatie : working papers
BT - Destocking, the bullwhip effect, and the credit crisis : empirical modeling of supply chain dynamics
PB - Technische Universiteit Eindhoven
CY - Eindhoven
ER -