Dear Jason,
I hope you're doing well! I wanted to follow up on my previous message regarding my proposed GSoC project. I understand you must be busy, but I’d really appreciate any feedback on the refined scope I shared—especially concerning the biomechanics aspect. If there are specific priorities or areas that would strengthen my proposal, I’d be happy to adjust accordingly. Your insights would be invaluable in shaping a more impactful contribution. Looking forward to your thoughts! Best regards, Rushabh Mehta On Saturday, 15 February 2025 at 22:24:56 UTC+5:30 Rushabh Mehta wrote: > Hello again, > > Thank you for your valuable feedback and insights! Based on the discussion > so far, I’ve refined my proposed project scope to ensure meaningful > contributions that align with current needs. This remains open to any and > all feedback. > > *Current Proposed Scope* > > 1. > > *Completing Future Work from GSoC 2024 (H. Kang)* > - Finalizing and merging the remaining work > > <https://github.com/sympy/sympy/wiki/GSoC-2024-Report-Hwayeon-Kang:-Implementing-Specific-Forces-and-Torques#future-work> > > from last year. > 2. > > *Expanding Nonlinear Models in sympy.physics.mechanics* > - *HysteresisSpring*: A spring model incorporating hysteresis effects, > enabling the simulation of materials like rubber. > - *NonlinearDamper*: A generalized damping model extending > DuffingSpring with nonlinear damping behavior. > - Accompanying documentation, tests, and relevant examples. > 3. > > *Advancing sympy.physics.biomechanics* > - Implementing the two not-yet-implemented methods in musculotendon > dynamics listed here by you > <https://github.com/sympy/sympy/issues/25508>: > - *Fiber length state* (damped elastic tendon). > - *Tendon force state* (damped elastic tendon). > 4. > > *(If Time Permits) Additional Extensions* > - Possible additions like rolling friction, viscous friction, or other > commonly used models based on complexity and feasibility. > - Further improvements based on feedback. > > *Queries and Next Steps* > > Given my limited background in biomechanics, I wanted to clarify: > > - Will implementing the musculotendon dynamics methods require > introducing new geometrical wrapping functionality? > - Are there specific requirements or high-priority areas within the > biomechanics module that I should direct my proposal towards? > > I’d love to hear your thoughts on this refined scope and any guidance on > it. > > Looking forward to your feedback! > > Best regards, > Rushabh Mehta > On Friday, 14 February 2025 at 13:44:26 UTC+5:30 Rushabh Mehta wrote: > >> Hello, >> >> Thank you for your valuable and quick feedback! >> >> I completely agree with your point that forces like aerodynamic drag are >> relatively straightforward to implement, and we want to ensure that any new >> models we add to SymPy provide significant value beyond simple equations. >> The goal would be to focus on forces or torque models that are difficult to >> implement and would save users time and effort. >> >> I also appreciate your insights on biomechanics. I will research and >> study up on muscle models and the challenges around wrapping objects for >> musculoskeletal models. I’ll definitely keep it in mind as I refine the >> proposal. >> >> Thank you again for your guidance, and I’ll be sure to keep your comments >> in mind as I develop the full proposal. I will be sure to communicate my >> progress and queries here. >> >> Best regards, >> Rushabh Mehta >> >> On Friday, 14 February 2025 at 13:09:46 UTC+5:30 [email protected] >> wrote: >> >>> Dear Rushabh, >>> >>> This seems like a good follow up to Hwayeon's project. You have a good >>> starting idea to turn into a proposal. >>> >>> Keep in mind that adding an aerodynamic force, like simply >>> 1/2*CD*A*rho*v**2, is trivial to include, i.e. Force(point, >>> 1/2*CD*A*rho*v**2). If we bother to make a special object for the force, it >>> should be something that people have a harder time implementing and takes >>> many lines of code. This way our object saves them that effort. So I'd like >>> to see adding fewer more difficult forces than a lot of trivial forces. >>> >>> There is interest from the biomechanics community to have muscle models >>> and many prebuilt wrapping objects. Muscles wrap around your bones and soft >>> tissue in complex geometrical ways and until we have more wrapping options, >>> many musculoskeletal models cannot be created. So maybe this is of interest >>> to you too. >>> >>> Jason >>> moorepants.info >>> +01 530-601-9791 <(530)%20601-9791> >>> >>> >>> On Fri, Feb 14, 2025 at 7:05 AM Rushabh Mehta <[email protected]> >>> wrote: >>> >>>> Dear SymPy Developers, >>>> >>>> I hope this message finds you well! My name is Rushabh Mehta, and I am >>>> a computer engineering sophomore at VJTI, Mumbai. I’ve been contributing >>>> to >>>> SymPy for some time now, with merged pull requests and a few more >>>> currently >>>> under review. Working with the SymPy codebase has been an enriching >>>> learning experience, and I am looking forward to contributing more. >>>> >>>> I am writing to share my interest in working on a GSoC project this >>>> year to enhance the force and torque models in the mechanics module. This >>>> project builds upon the work done by last year’s contributor, Hwayeon >>>> Kang, >>>> who implemented several foundational classes like LinearSpring, >>>> DuffingSpring, and LinearDamper. While these additions were a significant >>>> step forward, I feel the scope of their usage remains limited. My goal is >>>> to broaden the applicability of these prebuilt classes by introducing >>>> additional force and torque models that are both versatile and >>>> representative of real-world systems. >>>> >>>> Here’s a rough outline of the proposed enhancements: >>>> ------------------------------ >>>> >>>> *Proposed Deliverables* >>>> >>>> *1. Nonlinear Models:* >>>> >>>> - *HysteresisSpring:* Extend the Duffing Spring to include >>>> hysteresis and piecewise nonlinear behavior, enabling modeling of >>>> materials >>>> like rubber. >>>> - *NonlinearDamper:* Model damping forces proportional to v**n >>>> (velocity >>>> raised to fractional or higher-order power). This can represent >>>> progressive >>>> damping systems. >>>> >>>> *2. Aerodynamic Forces:* >>>> >>>> - *AerodynamicDrag:* Implement drag forces as a function of >>>> velocity, fluid density, and drag coefficient. >>>> - *AerodynamicLift:* Add lift forces for aerodynamic systems, >>>> incorporating lift coefficients and surface area. >>>> >>>> *3. Building on GSoC 2024 Work:* >>>> As suggested in last year’s project (link to the report >>>> <https://github.com/sympy/sympy/wiki/GSoC-2024-Report-Hwayeon-Kang:-Implementing-Specific-Forces-and-Torques#future-work> >>>> ): >>>> >>>> - Finalize the *Hill’s muscle model actuator* and add an example to >>>> the documentation. >>>> - Complete the *friction example* (sliding block on a rotating >>>> disc). >>>> >>>> *4. Documentation and Examples:* >>>> >>>> - Add practical examples to the SymPy documentation, such as: >>>> - Damped oscillations. >>>> - Aerodynamic forces in free fall. >>>> - Dynamic muscle models. >>>> >>>> ------------------------------ >>>> >>>> *Why This Project* >>>> >>>> The expansion of force and torque models will enhance SymPy's >>>> versatility, making it applicable to a wider range of use cases in fields >>>> such as biomechanics, aerodynamics, and mechanical systems. >>>> >>>> I would greatly appreciate your feedback on this direction. Please let >>>> me know if there are any areas you think should be prioritized or if >>>> there's anything I should adjust. >>>> >>>> Thank you for your time, and I look forward to your valuable input. >>>> >>>> Best regards, >>>> Rushabh Mehta >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "sympy" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion visit >>>> https://groups.google.com/d/msgid/sympy/ada5689e-76a3-4d81-ab76-0677061052b2n%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/sympy/ada5689e-76a3-4d81-ab76-0677061052b2n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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