Assignment 6

Obj:To import the model and create a rigid at the front end with the mentioned parameters create the control and engine cards,cross sections and run the simulation and plot the energies and forces in the hyper graph by creating the cross section and at intrusion pointsat described points and sections.
Procedure :
*Import the model by selecting the starter rad file by selecting the import option using radios profile.
*Now crate a type 7 contact interface by selecting the master and slave nodes both as the whole model and remaking parameters as default and the friction value as 0.2.
*The default parameters will be considered so for this simulation some of the parameters such as I del,I form,st max,fric-0.2.

*Create a rigid wall selecting the normal and other nodes and mention the search tolerenec and other parameters as mentioned below.

*Select the nodes for imposing some mass on it which will not create any incompatible kinematic condition and add the mass as it is to match to 700 kg and shift is at the beam below the driver.
*After adding the mass is checked by selecting the cog position and create the node with these point and and that the cog point is as per the reality as below image can be reference for understanding it.

*Impose some initial velocity to as it is 15.36 units that can be applied to the model by selecting the master and slave nodes.

*Use the model checker and penetration check and run for the errors if any errors are found check for it and correct and close the error.

*By selecting the anim DT file make the time step as o.5 ms and engine run time as 80 ms.

*Select the nodes on the rails and create the cross section by defining it with the skew and create the output block for it by selecting the cross section similarly the cross section to be selected on the other beam.
*Select the elements on the rails and create a skew for defining it at a fixed point simlarly to be done for Axial force received on the rails from bumper,Shotgun cross sectional forces,A pillar cross section the so that the intrusion can be calculated.

*Select the node on the B pillar rail and define it with the skew so that the acclerometer s defined can be calculated.

*select the node 66695,66244 intrusions on the dash wall .
*check for the intersection and penetrations by selecting the model and run the model checker correct the errors that are shown and complete model that it should not posses any errors.
*Run the simulation by choosing the file path where the simulated files to be saved.
*Open the hyper view now and upload the h3d file and apply for it and plot the energies in the hyper view.
*The instruction points and the cross section points are to be plotted completely with total resultant force acting on it.
*The resultant force at point of cross section can be reffered from the below images

At cross section 1&5:

At cross section 2&6:

At cross sect 3&7:

At cross section 4&8:

The energies plotted as per the above graph can be understood and can be made conclusion that the rigid wall is uniform and the applied velocity is same on all the nodes so at every cross section it can be concluded that the impact is same at on either side during the crash as the rigid wall is uniform so eve impact is observed.

*The resultant force at point of intrusions can be reffered from the below images.

Errors:
*After run the penetration check from the available tools the penetration are observed these are to be corrected by applying the auto correction path if it is not responding for this it can be done manually.
*After run the model checker we get the error with the default contact interface that is available it can be deleted and the node set which are not used are available that can also be deleted.
*The nodes or cross section or the sets that are defined with elements or nodes which are not contributing to the simulation can be deleted so that it will not impact with the simulation time.

*The direction of the normal is defined along the imposed velocity of the car and it is corrected by changing the normal direction of the rigid wall.

Results:

Rigid wall for the crash of the model at the frontal.

simulation run.

error corrections,penetrations,intersections corrections.

Plot energies.

Sectional force in the rails at location of indicated node 174247.

Axial force received on the rails from 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.

Note:The below link can be refer for the access of the model.

https://1drv.ms/u/s!Av1WlNmjfvAwiWeSO1_sPaDhhF1L?e=pNiy87