sympyhelpers

sympyhelpers provides helper routines and definitions for sympy. In particular, these methods wrap existing sympy functionality to do Newton-Euler and Lagrangian mechanics using Kane-style and Newton notation and format the outputs to match (some of) the conventions used in various textbooks including Kasdin & Paley (2011).

Installation

To install from PyPI:

pip install sympyhelpers

To install from source, clone or download the code repository, and, in the top level directory run:

pip install .

Contents:

• Notational Conventions
• Usage
  • Basic Example
  • Automatically Defining Variables and Differentiation Maps
  • Vector Representation
• Deriving the Equations of Motion of a Simple Spherical Pendulum
  • Define system coordiantes and variables
  • Define Direction Cosine Matrices and Angular Velocities
  • Kinematics
  • Forces
  • Angular Momentum Balance
  • Linear Momentum Balance
  • Euler-Lagrange Solution
• sympyhelpers
  • sympyhelpers package

Indices and tables

• Index

• Module Index

• Search Page