Assignment 6-Frontal Crash Simulation Challenge

 Frontal Crash Simulation Challenge

aim

• To Check the unit system and either follow[Mg mm s] or [Kg mm ms].
• Create an appropriate interface, friction 0.2 and recommended parameters.
• Make sure of no penetrations and intersections.
• Correct rigid bodies if any issues.
• Create a rigid wall with friction 0.1.
• Compare the model weight with the full-scale 300k nodes model and use added masses to reach the target weight of 700kg while getting CG about the required range.
• Initial velocity 35 mph.
• Use a model checker to ensure good quality.
• Time-step :0.5 to 0.1 microseconds.
• Run 80 ms.

output request 

• Sectional force in the rails at the location of indicated node 174247.
• The axial force received on the rails from the bumper.
• Shotgun cross-sectional forces.
• A pillar cross-section.
• Acceleration curve received on the accelerometer at base of B pillar (on B pillar rocker).
• Intrusions on the dash wall 66695,66244.

procedure

• to import the model into the graphic area 
•  
•  

• we have to  check the unit

• go to model - cards - begin card - check the units 
•  
•  
   
• now we have to create the group 
• dlt the old grps data
• and create the new TYPE 7 
•  
• and then enroll the all details in the type 7 data 
• go to model - groups - create type 7 - enroll the type 7 details 
•  
• after creating the group

• we have to create the rigid wall

•  
•  
• go to solver - create -rigid wall - enrol the details 
•  
• now we have to create the cross-section
• go to solver - create a frame -mov-select the nodes
•  
• now we have to select the nodes in the triangle form
•  
• in the same way we have to create the cross-section in the pillar,rail, bumper section, shotgun
• create the components in both left and right side
•  
•  
• after creating the cross-section 
• now we have to give the section
•  
• we have to check mass of the car 
• and mass to  balance the weight of the car 
• to check the mass of the car 
• go to tools - mass details - mass,cog
• and check that
•  
• if the mass got more or less than the actual value have to reduce and increase by ADMAS
• by grnode
•  
•  now we have to check the model checker and then we run the simulation
• after check the model now we have to run the simulation
•  
• now we have to plot the graph of all the things what we are doing 

Results

•  
•                                                                    total energy 

•  

•  
•                                                                           shot gun

•  
•                                                                        rail

•  
•                                                                        piller 

•  
•                                                                         bumper

•  
•                                                                                      accelerometer 

•  
•                                                                                intrusion 

• no.of.cycles                  =    80001
• energy error                 =   -1.5%
• mass error                    =  3.087
• simulation time            =  2454.52 s