2.3.2. Boundary Conditions for Side Crash Test

Figure 6 shows a schematic diagram of the side crash test. A side crash test involves a stationary vehicle, evaluating the impact characteristics when an impactor equipped with an MDB collides with the side region of a stopped vehicle according to IIHS regulation. An impactor with an MDB has a collision velocity of 50 km/h (13.8 m/s) and hits the stopped vehicle at a 90 degree angle, as shown in Figure 6. The mass of the sedan and the impactor with an MDB were 1420 and 1360 kg, respectively. The 6 degrees of freedom of the stopped vehicle were fixed on the ground. The friction coefficient between the ground and the impactor's wheel was 0.1. The collision time was 0.1 s. Because the opposite side of the collision zone would not be deformed, a half body of a stopped vehicle (sedan) was used as a rigid body in order to reduce the analysis time. The detailed side crash conditions are listed in Table 4. Mass scaling was not used, and the stable time increment size was 1.67821 × <sup>10</sup>−<sup>8</sup> s.

**Table 4.** Collision conditions for side crash simulation.


**Figure 6.** Boundary conditions for side crash simulation.
