Dual-Arm Dynamic Motion Simulation and Prediction of Joint Constraint Loads Using Optimization The University of Iowa

Format:

Conference/Event

Author/Creator:

Kim, Joo H., author.

Conference Name:

2007 Digital Human Modeling Conference (2007-06-12 : Seattle, Washington, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2007

Summary:

Our previous formulation for optimization-based dynamic motion simulation of a serial-link human upper body (from waist to right hand) is extended to predict the motion of a tree-structured human model that includes the torso, right arm, and left arm, with various applied external loads. The dynamics of tree-structured systems is formulated and implemented. The equations of motion for the tree structures must be derived carefully when dealing with the connection link. The optimum solution results show realistic dual-arm human motions and the required joint actuator torques.In the second part of this paper, a new method is introduced in which the constraint forces and moments at the joints are calculated along with the motion and muscle-induced actuator torques. A set of fictitious joints are modeled in addition to the real joints. Then the constraint forces/moments for the fictitious joints are obtained from an extension of our optimization method together with zero-displacement constraints. Our formulation provides a multi-body dynamics method that does not require numerical integration and results in accurate joint constraint loads

Notes:

Vendor supplied data

Publisher Number:

2007-01-2491

Access Restriction:

Restricted for use by site license