Abstract：Solving the whole collapse process of a structure with strong discreteness, large displacements and large deformations is a bottleneck of structural calculation analysis. Here, based on the theoretical mechanics, rigid body kinematics and dynamic equations, the discrete element method was used to effectively realize a visualization simulation for a structure’s whole collapse process. It was shown that Blender platform is used to realize a structure’s 3D visualization modeling and visual rendering of collapsed scene; the bullet constraints builder (BCB) is used to complete discretization of a structure’s beam-slab-column components and establishment of constraints among rigid-bodies; the physical engine is used to calculate collision process between rigid bodies, and update a rigid-body motion trajectory in real time; the synergy of the three realizes the visualization simulation of collapse process. Simulation results showed that the proposed method is suitable for large deformation simulation of structures and can realize visual simulation of the whole process from elasticity, elasticity-plasticity to collapse failure; the following study will provide a scientific guidance for the analysis of structure continuous collapse failure mechanism and the selection of evacuees’ escape route and persons’ rescue one.
王希，王宪杰，董艳秋，龙诗琪，杨思昭，周潇凡. 基于离散单元法和物理引擎的结构连续倒塌可视化模拟[J]. 振动与冲击, 2020, 39(13): 267-275.
WANG Xi， WANG Xianjie， DONG Yanqiu， LONG Shiqi， YANG Sizhao， ZHOU Xiaofan. Visual simulation for structure continuous collapse based on discrete element method and physical engine. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(13): 267-275.
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