Responses

Define mass:

1. Select the Responses tab.
2. From the possible response types select: MASS.
3. For Parts to be included select: All Parts.
4. For Attribute choose Mass.
5. For Case switch to US_NCAP.
6. For Response Name enter mass.
7. Push the Add button.

 Define maximum acceleration:

1. From the possible response types select: Response-Expression.
2. For algebraic expression enter: -Min("accel_left_seat(t)").
   (To define the expressions we can use here histories, that we defined in the Histories tab.)
   Because the x-axis is defined in opposite direction of motion, we have to define the expressions for maximum as "-minimum".
3. For Case switch to US_NCAP.
4. For Response Name enter max_accel_left_seat.
5. Push the Add button.

For the rest of the maximum acceleration-responses ( e.g. max_accel_right_seat, max_accel_engine_top, max_accel_engine_bottom,  max_accel_B_pillar_r, max_accel_B_pillar_l ) repeat the steps 1 to 5, updating the algebraic expressions and Names.

The same applies to responses for maximum intrusion.

Define torsional stiffness: 

Before defining torsional stiffness we have to define two other response-expressions. These are the maximum x-moment (max_x_moment = Max("x_moment(t)") ) and the maximum torsion angle ( max_torsion_angle = Max("torsion_angle(t)") ).

1. From the possible response types select: Response-Expression.  
2. For algebraic expression enter: max_x_moment/max_torsion_angle.
3. For Case switch to Torsion.
4. For Response Name enter tors_stiffness.
5. Push the Add button.

 Define frequency mode 7:

1. From the possible response types select: FREQUENCY.
2. For Baseline Mode Number type 7.
3. For Modal Output Option select Frequency of Mode.
4. For Case switch to EVA.
5. For Response Name enter Frequ_mode_7.
6. Push the Add button.

Repeat steps 1 to 6 for frequency mode 8.