Assignment 6-Frontal Crash Simulation Challenge

AIM:

Frontal Crash-BIW

• To Check for unit system of the given Model
• To Create the interface ,friction 0.2
• To check for the penetrations and intersection exists in the given model
• To Correct rigid bodies if any issues.
• To Create rigid wall with friction 0.1
• To check and Shift the CoG of the model to the required location By adding or removing the Masses to the model upto reach the model target weight of 700kg and not exceeding the total Nodal points 300k value.
• To create Initial velocity command upto max 35 mph.
• To check the quality of crashworthiness design by using model checker command
• To implement the Time-step:0.5 to 0.1 microseconds.
• To implement the simulation with Run command maximum value: 80 ms.

Given Model:

Objective1:

• To Check for unit system of the given Model

The given Model Unit system is:

Kg,mm,ms

Objective2:

• To Create the interface ,friction 0.2

Interface with type 7 having friction:0.2 is created as below and recommended values are maintained.

Objective:3

To check for the penetrations and intersection exists in the given model

Penetration check tool is run and No penetration and intersection

found in the model.

Objective:4

To Correct rigid bodies if any issues.

Visually inspected the model. No Rigid body found in the system.

Objective:5

• To Create rigid wall with friction 0.1

RWall Settings:

Objective:6

To check and Shift the CoG of the model to desired location

Admass Settings:

Objective7:

To create Initial velocity command upto max 35 mph

Initial velocity settings:

Objective:8

• using model checker command

Few errors are found and did auto correction.

Objective:9

• To implement the Time-step:0.5 to 0.1 microseconds.

Settings:

Objective:10

• To implement the simulation with Run command maximum value: 80 ms.

Instrusions :

created@66695,created@66244

Settings:

Outputs:

Sectional forces:

Node 174247:

A pillar sec force:

B pillar sec forces left and right:

Short Gun sec force:

Front Rail bumper sec forces:

Acc measurements:

Instrusions:

Spring elongation measurements@66244

Spring elongation measurements@66695

Energy plots:

Energy errors:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

78800 78.80 0.1000E-02 NODE 49330 -2.3% 0.1282E+05 0.5966E+05 7.161 -248.8 0.3408E-01 618.8 20.39

78900 78.90 0.1000E-02 NODE 149043 -2.3% 0.1283E+05 0.5965E+05 7.090 -249.2 0.3408E-01 618.8 20.40

79000 79.00 0.1000E-02 NODE 78861 -2.3% 0.1284E+05 0.5964E+05 7.064 -249.5 0.3409E-01 618.8 20.40

79100 79.10 0.1000E-02 NODE 121114 -2.3% 0.1285E+05 0.5962E+05 7.057 -249.8 0.3409E-01 618.8 20.40

79200 79.20 0.1000E-02 NODE 121114 -2.3% 0.1286E+05 0.5961E+05 7.086 -250.0 0.3409E-01 618.8 20.40

79300 79.30 0.1000E-02 NODE 50882 -2.3% 0.1287E+05 0.5959E+05 7.060 -250.3 0.3409E-01 618.8 20.40

79400 79.40 0.1000E-02 NODE 121109 -2.4% 0.1288E+05 0.5958E+05 7.173 -250.5 0.3410E-01 618.8 20.40

79500 79.50 0.1000E-02 NODE 197744 -2.4% 0.1290E+05 0.5956E+05 7.079 -250.7 0.3410E-01 618.8 20.40

Animation-Contour plots:

displacement: