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Object‐oriented animation system for seismic response of multistory structures

Visualizing the dynamic behavior of structures under earthquake loading is a challenge for students taking structural dynamics and earthquake engineering courses. A prototype animation system was developed for visualizing the dynamic response of multistory structures subjected to earthquake excitations, using the object‐oriented programming paradigm and implemented in Microsoft Windows and Borland C++ on a 33 MHz 80486‐based personal computer. At present, the animation system is limited to two‐dimensional multistory frames with rigid floors. The input can be any accelerogram (ground acceleration record) due to any real or artificial earthquake. The user of the system can change the input parameters of the structure or select the ground acceleration record and view their effect on the dynamic behavior of the structure. This object‐oriented animation model is an effective courseware or interactive computer tool that may be used in teaching structural dynamics and earthquake engineering courses.