Bottle Drop Analysis Using ANSYS/Explicit Dynamic Analysis /Impact Analysis

[@kirtankumarsahu8599]

sir, This video helped me a lot to understand the dynamic analysis. I am also working on the same type of problem but in that case, I need to use the pressure of flowing fluid (not hydrostatic pressure). Have you made any video in such type of problem then please let me know. it is something like a combination of fluent and explicit Dynamics.

[@graspengineering9249]

you can do easily....you just need to map cfd results in fea, just get pressure mapping in fea & solve static and then connect with explicit deck as mentioned in video

[@karthikeyanm1859]

Thanks for the great video.. What is the difference between body interaction and contacts?

[@graspengineering9249]

Welcome. Please check our blog post for CAD model. We will try to upload here... www.graspengineering.com/category/design/fea-cad-geometry/

[@AnuragGupta-op7uz]

Thanks for the great video. Can you also provide the ansys explicit quasi static analysis for sandwich structure?

[@graspengineering9249]

Welcome. There is very less requirement for quasi static simulations, hence no training.

[@AnuragGupta-op7uz]

@@graspengineering9249 actually i want to simulate the condition when a uniaxial compression load is applied on the honeycomb lattice structure sandwich between two rigid plates where bottom plate is fixed while top plate moves slowly downward. Since such type of simulations are non-linear, so explicit works well. If is possible for your team to simulate such condition, then please make one video on this topic. Thanks

[@ajayjayswal]

@@AnuragGupta-op7uz did you get your model working on quasi-static analysis? can you share your experience?

[@AnuragGupta-op7uz]

@@ajayjayswal yes I am getting a model working in quasi static analysis, but that model I have simulated through Abaqus/Explicit instead of Ansys. In abaqus explicit, time period to be applied is too small and run the job. After job completion, check the energy plots and see whether the kinetic energy is small compared to internal energy of system. This energy check criteria is must as we are using explicit solver to run quasi static simulations. Also, self contact is also provided apart from the general contact.

[@foodgrate4552]

Thanks for videos. But can you give us tutorial design of this bottle?

[@graspengineering9249]

Welcome. We usually upload CAD file on our blogpost: www.graspengineering.com/category/design/fea-cad-geometry/

[@anupamkaran9224]

Sir, Additive manufacturing tutorial please.

[@graspengineering9249]

Sure, we will work on that !

[@mehmetfatihkaya4812]

Why you didnt add gravitional accelaration?

[@nirmal148]

Have you tried reducing mesh size on floor and doing the run and checking stress?

[@graspengineering9249]

As floor is not rigid in this simulation, so if you change the mesh size stress might also vary.

[@manuseerapum3073]

Please share your thoughts for final year project ideas

[@graspengineering9249]

Sure, we will create sperate video on that.

[@amiruddinaziz1285]

How to simplify the settings and boundaries if we want to perform drop test with various height of product to the ground? Without takes much times

[@sandyou03]

Hello sir , thanks for the helpful tutorial. Do you know how to calculate tangent modulus (any formula is there?) to account bilinear material model. It will be great if you can help on this.

[@graspengineering9249]

Thank you ! We generally extract materials from ASME or refer from matweb. You can easily goggle the tangent modulus formula from internet.

[@tuncaykamas5275]

Hello very nice tutorial thanks, would you mind uploading the cad model in step or a corresponding format to import in Ansys workbench

[@graspengineering9249]

Please check below link, we are uploading cad models here: www.graspengineering.com/category/design/fea-cad-geometry/

[@tejassankpal5574]

Make more videos on dynamic analysis

[@graspengineering9249]

Yes. Meanwhile please refer our other video from our channel page.

[@nikznikitashukla4167]

Hello sir ..can you tell me how to do john crook methods in explicit dynamic any problem

[@graspengineering9249]

Will upload soon. You can use the johnson cook material from ansys library

[@emdadnirob9746]

Hi , can i get the report review of this work?

[@graspengineering9249]

We need to check if we can provide it or not. But you can refer the video and try to replicate the same.

[@niketanbhalke6000]

Will you please share the link of geometry? The geometry is not available for the link you provided in the comments.

[@graspengineering9249]

Okay, We will upload geometry file on our blogpost.

[@mayurkulkarni2829]

Great video ,,👌Yess do non linear modal and dynamic as well

[@graspengineering9249]

Thanks, Will do !

[@joseph3036]

How do I determine 'number of steps' and 'end time' in analysis settings. Am using Ansys version 19.1.

[@graspengineering9249]

It is input for the analysis. You should aware of time frame, where bottle is dropped at what time it will take to reach the floor ( impact). Just try with approximate values first as suggested in video.

[@sohailhamza2812]

Hi sir I want to perform repeated hammer impact on beam specimen, can you help me with how to get repeated impact?

[@graspengineering9249]

Based on your drop velocity and time frame and interactions, you should get repeated hammer impact. We will try to upload video on this topic.

[@sohailhamza2812]

@@graspengineering9249 no matter how long time Interval is give, the hammer is just hitting the surface only once, how can i get multiple impact?

[@ahammedshameerp3290]

Hi, I have done a drop test of a bottle. But in the result, in the animation, the bottle is just moving , not falling on the fixed plate. What should I do? What will be the problem?

[@graspengineering9249]

Check the direction of drop. Also try to follow the this tutorials, you should get the similar results shown in video.

[@aakashsajeevan7986]

Can u give the link to get the model??

[@graspengineering9249]

We will upload this model in our blog and will share ASAP.

[@arijeetnath9236]

when I try to apply the hydrostatic pressure, my max pressure is shown at the top of the bottle even though the fluid is at the bottom of the bottle. how can i fix that?

[@graspengineering9249]

Check the coordinates and height of fluid. Please refer our hydrostatic pressure application video.

[@Swamic2]

I am getting Solver error - energy error too large. What to do? Please help me sir

[@graspengineering9249]

Check your minimum element size and try to increase as much as possible to get faster results.

[@Swamic2]

@@graspengineering9249 can I change maximum energy error value?