A physics-based simulation approach for cooperative erection activities
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Cooperative erection activities are critical to projects which involve the erection of heavy loads or theinstallation of special equipment. Detailed simulation on computer prior to construction can identifyconstructability problems, and subsequently avoided during actual erections. This paper describes anintegrated approach for simulating the detailed motions of cranes. This research develops a physics-basedmodel that follows the principle of closed-form forward kinematics and constraint-based dynamics topresent the dual-crane mechanism mathematically — a non-trivial task. This model can be used to analyzethe inputs from the users (i.e. virtual crane operators) and simultaneously compute the cables sway andreaction of collisions. We also implemented the model on computer and developed a simulation system,Erection Director, to render realistic cooperative erection activities. A demonstration of simulating two-cranelift has been built and three performance tests including a small building (840 elements), a medium building(1937 elements) and a large building (2682 elements) validate the feasibility of the proposed approach. Thetest results indicate that Erection Director can support real-time and physics-based visualization ofcooperative erections.
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Kang, S.; Chi, Hung-Lin; Miranda, E. (2009)Abstract: A system for three-dimensional simulation and animation of erection processes is presented. The system is aimed at providingdetailed planning and visualization in a virtual construction environment as well as ...
Chen, Y.; Chi, Hung-Lin; Kang, S.; Hsieh, S. (2016)During crane operation, the operator can be distracted by a multitude of factors, leading to hazardous operational environments which can result in accidents. Recent investigations into the potentials of tele-operation ...
Chi, Hung-Lin; Chen, Y.; Kang, S.; Hsieh, S. (2012)This research focuses on one of the major challenges in a tele-operated crane system, namely the userinterface (UI). This UI should provide rich information retrieved from the field and display it properlyin order to ...