TY - JOUR TI - Numerical studies on a piecewise smooth vibro-impact system in parameters-state spaces AU - Li Xianfeng AU - Yang Zhe AU - Ma Guofeng AU - Zhang Hui JN - Thermal Science PY - 2026 VL - 30 IS - 2 SP - 1137 EP - 1145 PT - Article AB - The present paper is devoted to the synthesis of Poincare mapping and global dynamics of a class of piecewise smooth vibro-impact systems with preloading. The periodic motions are identified numerically in bi-parameter planes. The transition law and the motion pattern are presented as island-like periodic windows. The coexistence of attractors and their basins of attraction in the state planes is then given by cell-to-cell mappings. The numerical results indicate that new attractors can be induced by boundary crises and grazing bifurcations. In the final analysis, the coexisting attractors in disparate regions of bi-parameter planes are subjected to numerical simulation in the joint parameter-state space. It offers a novel approach to the study of the global dynamics of piecewise smooth systems. DO - 10.2298/TSCI2602137L ER -