Abstract: A new derivation of the spin and biquaternion representation of the Euclidean group is presented. The derivation is based upon the even Clifford algebra representation of the orientation preserving ...

Abstract: This paper reformulates and extends the new, group theoretic, mobility criterion recently developed by the authors, (, and , 2003, ASME J. Mech. Des., 125, pp. 70–80). In contrast to the ...

Abstract: This paper introduces two novel dexterity indices, namely, angularity and axiality, which are used to estimate the motion sensitivity of the mobile platform of a parallel manipulator undergoing a general motion involving ...

Abstract: Simple expressions for the forward and inverse acceleration analyses of a six degree of freedom in-parallel manipulator are derived. The expressions are obtained by firstly computing the “accelerator” ...

Abstract: This paper presents a generalization of Kutzbach-Grübler criterion for mobility analysis of kinematic chains based on group theory. This new mobility criterion applies to exceptional linkages and ...

Abstract: Despite the development and implementation of intensive health and safety training programs, the construction industry still remains one of the most dangerous industries. To remain safe, workers must be able to effectively ...

Abstract: The results of an experimental program comparing the responses of shear-critical rectangular columns tested under monotonic and reversed-cyclic loading are presented. These specimens had a constant compressive axial load ...

Abstract: Presented is an overview of the T-N interpretation of the famous planar Euler–Savary formula. The T-N spatial analog interpretation consists of two components: the established axial component along with a new transverse ...

Abstract: The method of intersection of surfaces generated by kinematic dyads is applied to obtain mechanisms that are able to shift from one mode of motion to another. Then a mobility analysis shows that the singularities of the ...