Yes, I know. Generally, I want to simulate all the major effects such as vibrations, rotations, etc. The reason I was asking about similarity to RBD, is because I am not familiar with any free software that is specifically designed for MD simulation. Come to think of it, I should do a search.Gokul43201 said:Remember, bond angles are not perfectly "rigid". And rotations are often allowed in molecules lacking a large steric asymmetry.
Molecular Dynamics (MD) is a simulation technique that models the behavior of individual atoms and molecules in a system, taking into account their interactions and motion. Rigid Body Dynamics (RBD) is a simulation technique that models the movement of larger, rigid objects as a whole.
Molecular Dynamics is better suited for systems with a large number of atoms or molecules that interact with each other, such as liquids, gases, and solids. It is also useful for studying changes in the structure and behavior of these systems over time.
No, Rigid Body Dynamics is not suitable for modeling the behavior of individual atoms and molecules. It is designed for larger, rigid objects that move as a whole, rather than individual particles.
Molecular Dynamics simulations are typically more computationally expensive than Rigid Body Dynamics simulations. This is because MD simulations require more detailed calculations and interactions between individual particles, while RBD simulations can simplify the movement of larger objects.
Both methods have their own limitations. Molecular Dynamics simulations are limited by the accuracy of the force fields used to model the interactions between particles. Rigid Body Dynamics simulations may not accurately capture the behavior of flexible or deformable objects. It is important to carefully consider the system being studied and the goals of the simulation when choosing between these two techniques.