Reverse Dynamic Anlysis

[Badtreater]

Good morning dear developer, Although it may end up being an ineffective communication, writing this letter still makes me feel honored. Even if I searched the entire GitHub, I couldn't find any code related to my needs until I saw your page. I hope to capture the trajectory of the elastic film in motion during the experiment using a high-speed camera and reconstruct dynamic information such as the force or strain energy acting on the film. I noticed some similarities with your code, but I don't know where to start, how to learn and achieve my goals in a targeted manner. Thank you very much for your patience in seeing this. Finally, I wish you a happy life and good health. Thanks!

[mkkrc]

Hello @Badtreater, Thanks for the good wishes. As far as I understood from your explanation, below studies (or their references) might be helpful for your project. If you can provide further information about your project (such as mechanical characteristics of elastic film material, motion capture method, project objective, and other possible details), I might be able to contribute to your project.

Good luck with your project. :)

https://www.cs.ubc.ca/~ascher/papers/wwyalh.pdf https://arxiv.org/abs/1306.4478 https://people.eecs.berkeley.edu/~pabbeel/papers/SchulmanLeeHoAbbeel_ICRA2013.pdf

[Badtreater]

I am sorry that some of the content of my letter was lost due to my email reply. My email is tayir9717@163.com This is the video attachment in the email, thank you.

https://github.com/mkkrc/crankConnectingRod/assets/128787206/f3be12fc-022b-4589-92d0-5d14a346aab2

[Badtreater]

I appreciate  your reply so much that I have spent the whole day thinking about how to reply to this letter.If there is any offense in the following text, please forgive me, thank you for your understanding.

I am preparing to divide this letter into three parts so that you can easily read it.

Part one: The demand present in my project I am currently engaged in research on fluid structure coupling between biomimetic materials and wind fields.The material I am using is a hyperelastic material that can be fitted using the neo-hookean constitutive model (Elastic modulus E=~1 MPa ,Density ρ=~10^3 kg/(m^3)).I presented specific information on the material's movement trajectory in the animation(due to my eagerness to reply to your email, I did not have enough time to capture professional photos of the materials painted colors, sorry for my lack of professionalism).We want to consider material motion as a two-dimensional problem, so I need to color the third film in the video and obtain the trajectory.Meanwhile, we hope to further analyze any possible material parameters such as elastic modulus, stress, strain energy, etc. For a long time in the past, we have been focusing on coupling research from a fluid perspective, thus, studying material dynamics characteristics will be very helpful for our research.Although I lack knowledge in solid dynamics modeling, the relevant papers("Deformation Capture and Modeling of Soft Objects") you provided have aroused my great interest, Thank you very much. My knowledge framework mainly includes fluid mechanics, intelligent material manufacturing, and applications.If I could collaborate with you, it would be my honor. Believe me, we can do many interesting and impactful research!

Part two: My research background In order for you to further understand my knowledge framework, I am also honored to share with you some of my previous research content. I have previously engaged in research on flow control and intelligent materials applications in robotics (I am sorry that the file size limit prevents me from sending more photos). But due to the lack of modeling knowledge in solid, especially nonlinear dynamics, I encountered resistance. If we can cooperate to complete this project, I guarantee to safeguard your reasonable rights and interests in the project, and I believe that even if we cannot cooperate, it will still become a beautiful friendship. I am truly sorry that writing a lengthy letter has taken up your valuable time. Meanwhile, please allow me to once again express my gratitude for your reply. But I believe that this my reckless step will become the beginning of our friendship, thank you.