Abstract: A modeling method by using advanced smart object (ASO) is proposed to realize the behavior modeling of the virtual human. Firstly, the concept of ASO is introduced, and the interaction element, part, action of its interaction features are defined, and the interaction action is also classified. Secondly, the object-driven method is proposed from the computer representation to solve the calculation problem of the virtual human motion that is caused by the object action, and the modeling of the interaction feature of virtual object is implemented. Lastly, we analyze the basic behavior of virtual human according to the requirements and select four frequently-used types of virtual human basic actions, and after that, define the basic actions and make combinations of them, so that the method for the interaction posture calculation and the hand shape calculation by using the interaction element can be proposed. The behavior modeling of the virtual human and the ergonomics simulation are achieved, which helps solve the problem of massive direct interaction for ergonomics simulation and verifies the reusability of the simulation. Taking the simulation of the manual riveting operation in the aircraft assembly as an example, the proposed method is further tested.

Key words: ergonomics simulation, advanced smart object, virtual human, virtual object, behavior modeling