Reconstructed Harmonic Balance Method for Solving Nonlinear Simple Pendulum Problems - Source Code

The nonlinear pendulum is a classic problem in physics. This code is an example of the reconstruction harmonic balance (RHB) method proposed by our team to solve nonlinear pendulum problems. By using the recast technology, the original physical model is rewritten into another equation form and then solved using the proposed method. The RHB-recast method is suitable for solving nonlinear problems with transcendental functions. Especially when a nonlinear simple pendulum undergoes significant vibration, traditional linearization methods cannot capture the dynamic response well, while the RHB recasting rule can provide high-precision analytical solutions.