Three-Dimensional Dynamic Analysis of Wheelchair Propulsion

Dynamic Analysis of Three Dimensional Asymmetric Isolated Structures

Dynamic Analysis of Three Dimensional Asymmetric Isolated Structures

Wheelchair Propulsion Analysis Using Quaternions

Mathematics requires three markers to define a local coordinate system to calculate rotations in three dimensions (3D), as three coordinates are necessary to specify the orientation of a rigid body with respect to a fixed set of space axes. However, it is not uncommon in wheelchair literature to find papers (Veeger, et al., 1991) that used only two markers to define segment rotation in three di...

Analysis of vibrations induced during wheelchair propulsion.

Little is known about how dynamic acceleration affects wheelchair-rider comfort. The current study was to test both the operation of an instrumented wheelchair by a wheelchair user over a Simulated Road Course (SRC) and the operation of the same instrumented wheelchair during normal daily activities (a field test) by test subjects. Sixteen subjects participated in the protocol. A SRC allowed co...

Model identification and dynamic analysis of ship propulsion shaft lines

Dynamic response analysis of mechanical structures is usually performed by adopting numerical/analytical models. Finite element (FE) modeling as a numerical approach plays an important role in dynamic response analysis of complex structures. The calculated dynamic responses from FE analysis are only reliable if accurate FE models are used. There are many elements in real mechanical structures w...