Simulating the Dominant Effect of a Few Critical Sites on Supply Chains Using the Inter-industry Relations Table

摘要

We study supply chain disruptions, particularly in the passenger vehicles sector, caused by the mass industrial shutdowns due to the Great East Japan Earthquake in March, 2011, along with the restoration process to assess supply chain resiliency. We first investigate the extent of damage using the inter-industry relations table and then analyze from the viewpoints of geography, time, and economy. Following this, the layered structure was derived and the rate-determining factors of the restoration process were identified. Using these factors, we simulate the disruptions in and restoration of the passenger vehicles sector. This method using the I-O table is effective for assessment of supply chain resiliency.